EP2106292A2 - Verfahren zur herstellung von katalysatoren und deren verwendung für die gasphasenoxidation von olefinen - Google Patents
Verfahren zur herstellung von katalysatoren und deren verwendung für die gasphasenoxidation von olefinenInfo
- Publication number
- EP2106292A2 EP2106292A2 EP07847868A EP07847868A EP2106292A2 EP 2106292 A2 EP2106292 A2 EP 2106292A2 EP 07847868 A EP07847868 A EP 07847868A EP 07847868 A EP07847868 A EP 07847868A EP 2106292 A2 EP2106292 A2 EP 2106292A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- catalyst
- compounds
- metal oxide
- suspension
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 152
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 150000001336 alkenes Chemical class 0.000 title claims abstract description 12
- 230000003647 oxidation Effects 0.000 title claims abstract description 8
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 8
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 66
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 66
- 230000001698 pyrogenic effect Effects 0.000 claims abstract description 14
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 97
- 238000000034 method Methods 0.000 claims description 60
- 150000001875 compounds Chemical class 0.000 claims description 57
- 239000000725 suspension Substances 0.000 claims description 46
- 239000003513 alkali Substances 0.000 claims description 41
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical group CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 38
- 238000000465 moulding Methods 0.000 claims description 33
- 239000010931 gold Substances 0.000 claims description 31
- 229910052763 palladium Inorganic materials 0.000 claims description 31
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 26
- 229910000510 noble metal Inorganic materials 0.000 claims description 26
- 239000007789 gas Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000002360 preparation method Methods 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 21
- 229910052737 gold Inorganic materials 0.000 claims description 19
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 18
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 16
- 238000000227 grinding Methods 0.000 claims description 16
- 229910001868 water Inorganic materials 0.000 claims description 16
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 15
- 238000001354 calcination Methods 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 239000011591 potassium Substances 0.000 claims description 15
- 229910052700 potassium Inorganic materials 0.000 claims description 15
- -1 alkali metal acetate Chemical class 0.000 claims description 14
- 229910052793 cadmium Inorganic materials 0.000 claims description 13
- 150000002736 metal compounds Chemical class 0.000 claims description 12
- 238000007493 shaping process Methods 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 12
- 238000005470 impregnation Methods 0.000 claims description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- 230000004913 activation Effects 0.000 claims description 10
- 238000005345 coagulation Methods 0.000 claims description 10
- 230000015271 coagulation Effects 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 229910052788 barium Inorganic materials 0.000 claims description 9
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 9
- 229910021529 ammonia Inorganic materials 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 8
- 229910052783 alkali metal Inorganic materials 0.000 claims description 7
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 235000011837 pasties Nutrition 0.000 claims description 7
- 239000002243 precursor Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 6
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 6
- 239000011324 bead Substances 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 4
- 150000002739 metals Chemical class 0.000 claims description 4
- 238000000518 rheometry Methods 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- 239000008188 pellet Substances 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- 239000010970 precious metal Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000007740 vapor deposition Methods 0.000 claims description 3
- 238000001238 wet grinding Methods 0.000 claims description 3
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 238000006137 acetoxylation reaction Methods 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims description 2
- 238000011143 downstream manufacturing Methods 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 150000007524 organic acids Chemical class 0.000 claims description 2
- 235000005985 organic acids Nutrition 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 239000011593 sulfur Substances 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims 2
- 230000007423 decrease Effects 0.000 claims 1
- 150000003112 potassium compounds Chemical class 0.000 claims 1
- 230000001376 precipitating effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 239000011230 binding agent Substances 0.000 abstract description 5
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 60
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 45
- 239000000243 solution Substances 0.000 description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 34
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical group [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 32
- 239000000463 material Substances 0.000 description 27
- 239000011148 porous material Substances 0.000 description 20
- 230000000694 effects Effects 0.000 description 19
- 239000000203 mixture Substances 0.000 description 19
- 229910021485 fumed silica Inorganic materials 0.000 description 16
- 235000011056 potassium acetate Nutrition 0.000 description 16
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 14
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 14
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 14
- 235000011114 ammonium hydroxide Nutrition 0.000 description 14
- 239000002253 acid Substances 0.000 description 13
- 230000015572 biosynthetic process Effects 0.000 description 13
- 239000002585 base Substances 0.000 description 12
- 150000003839 salts Chemical class 0.000 description 12
- 150000007514 bases Chemical class 0.000 description 10
- 239000000843 powder Substances 0.000 description 10
- 239000000377 silicon dioxide Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- 229920004482 WACKER® Polymers 0.000 description 7
- 239000012876 carrier material Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- 239000004033 plastic Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 229910017840 NH 3 Inorganic materials 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000003637 basic solution Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 239000012153 distilled water Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 4
- 241000282326 Felis catus Species 0.000 description 4
- 239000002202 Polyethylene glycol Substances 0.000 description 4
- RPYSFYBAYJBKCR-UHFFFAOYSA-L dichloropalladium;dihydrochloride Chemical compound [H+].[H+].[Cl-].[Cl-].[Cl-].[Cl-].[Pd+2] RPYSFYBAYJBKCR-UHFFFAOYSA-L 0.000 description 4
- 238000011049 filling Methods 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 229920000609 methyl cellulose Polymers 0.000 description 4
- 239000001923 methylcellulose Substances 0.000 description 4
- 235000010981 methylcellulose Nutrition 0.000 description 4
- 239000004200 microcrystalline wax Substances 0.000 description 4
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 4
- YJVFFLUZDVXJQI-UHFFFAOYSA-L palladium(ii) acetate Chemical compound [Pd+2].CC([O-])=O.CC([O-])=O YJVFFLUZDVXJQI-UHFFFAOYSA-L 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229920001223 polyethylene glycol Polymers 0.000 description 4
- 239000012255 powdered metal Substances 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
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- 238000000576 coating method Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
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- 239000002019 doping agent Substances 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000006259 organic additive Substances 0.000 description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910001928 zirconium oxide Inorganic materials 0.000 description 3
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N Propene Chemical compound CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- GEIAQOFPUVMAGM-UHFFFAOYSA-N ZrO Inorganic materials [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 2
- 239000000440 bentonite Substances 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- LHQLJMJLROMYRN-UHFFFAOYSA-L cadmium acetate Chemical compound [Cd+2].CC([O-])=O.CC([O-])=O LHQLJMJLROMYRN-UHFFFAOYSA-L 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 150000001768 cations Chemical group 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
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- 238000009826 distribution Methods 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 150000002344 gold compounds Chemical class 0.000 description 2
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- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 229940071125 manganese acetate Drugs 0.000 description 2
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
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- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910003803 Gold(III) chloride Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000002841 Lewis acid Substances 0.000 description 1
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- 150000002343 gold Chemical class 0.000 description 1
- FDWREHZXQUYJFJ-UHFFFAOYSA-M gold monochloride Chemical compound [Cl-].[Au+] FDWREHZXQUYJFJ-UHFFFAOYSA-M 0.000 description 1
- RJHLTVSLYWWTEF-UHFFFAOYSA-K gold trichloride Chemical compound Cl[Au](Cl)Cl RJHLTVSLYWWTEF-UHFFFAOYSA-K 0.000 description 1
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- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
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- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
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- 238000007654 immersion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
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- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 150000007517 lewis acids Chemical class 0.000 description 1
- 239000006194 liquid suspension Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 239000012702 metal oxide precursor Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 150000002826 nitrites Chemical class 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 150000002940 palladium Chemical class 0.000 description 1
- 150000002941 palladium compounds Chemical class 0.000 description 1
- GPNDARIEYHPYAY-UHFFFAOYSA-N palladium(ii) nitrate Chemical compound [Pd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O GPNDARIEYHPYAY-UHFFFAOYSA-N 0.000 description 1
- 239000000546 pharmaceutical excipient Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 238000002459 porosimetry Methods 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- LSGOVYNHVSXFFJ-UHFFFAOYSA-N vanadate(3-) Chemical class [O-][V]([O-])([O-])=O LSGOVYNHVSXFFJ-UHFFFAOYSA-N 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/44—Palladium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/48—Silver or gold
- B01J23/52—Gold
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/58—Platinum group metals with alkali- or alkaline earth metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/60—Platinum group metals with zinc, cadmium or mercury
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/66—Silver or gold
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0027—Powdering
- B01J37/0036—Grinding
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/04—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds
- C07C67/05—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds with oxidation
- C07C67/055—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds with oxidation in the presence of platinum group metals or their compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/08—Silica
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/613—10-100 m2/g
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/615—100-500 m2/g
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/63—Pore volume
- B01J35/638—Pore volume more than 1.0 ml/g
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
- B01J37/0205—Impregnation in several steps
Definitions
- the invention relates to a process for the preparation of catalysts on stable, high-purity moldings of pyrogenic metal oxides without the addition of binders and their use in the gas phase oxidation of olefins.
- Pyrogenically produced metal oxides are characterized by extreme fineness, high specific surface areas, defined, spherical primary particles with defined surface chemistry and by non-existent internal surfaces (pores). Furthermore, they are characterized by a very high chemical purity.
- Fumed silicas are increasingly of interest as supports for catalysts (D. Koth, H. Ferch, Chem. Ing. Techn. 52, 628 (1980)).
- the production of moldings from metal oxide powders is usually carried out by pressing or extrusion using binders and lubricants to obtain stable moldings.
- the binders and lubricants are inorganic and organic additives.
- Inorganic additives such as magnesium stearate, remain in the moldings produced in the form of inorganic compounds, such as magnesium oxide.
- Organic additives can also cause impurities, such as carbon, in the production process of the shaped bodies.
- the desired very high purity of the pyrogenic metal oxides used, such as pyrogenic SiO 2 is lost in the moldings produced thereby.
- Reaction are favorably influenced and on the other hand, a lower mass of support material is required to fill a specific reactor volume.
- the cost ratio of carrier material to reactor volume is better and the process more economical.
- Low bulk densities can be achieved, for example, with catalyst molds which have at least one through-channel, for example rings.
- annular body with the least possible wall thickness.
- low wall thicknesses lead to moldings in which the mechanical strengths are no longer sufficient for catalyst preparation and / or reactor filling and are therefore unsuitable as catalyst support materials.
- catalytically active components may inter alia palladium and / or its compounds and alkali compounds, and in addition gold and / or its compounds (System
- EP 72390 describes the preparation of pressings from a mixture of fumed metal oxides, water, silica sol and a pressing aid.
- a polyfunctional alcohol eg Glycerin
- EP 807615 includes a process for producing pressings consisting of fumed silica
- Methyl cellulose, microwax and polyethylene glycol and water The compacts usually have contents of 50 to 90 wt .-% silica, 0.1 to 20 wt .-% of methyl cellulose and 0.1 to 15 wt .-% of microwax and 0.1 to 15 wt .-% polyethylene glycol on.
- Precious metal hydroxides are used alkali metal silicates, during which a pH of 6.5 - 9.5 is set for a period of 12 - 24 hours.
- support materials of the VAM catalysts based thereon supports having surface areas of 10 to 800 square meters per gram are used.
- EP 807615 describes a process for producing fusions of fumed silica using silica with methylcellulose, microwax and
- Polyethylene glycol is homogenized with the addition of water. After mixing, a drying is carried out at 80 to 150 0 C. The possibly previously crushed powder is deformed into pressings, which are tempered for a period of 0.5 to 8 hours at temperatures of 400 to 1200 0 C.
- Mixtures before compression of the masses usually have contents of 50 to 90% by weight of silicon dioxide, 0.1 to 20% by weight of methylcellulose and 0.1 to 15% by weight of microwax and 0.1 to 15% by weight.
- the compacts listed in the examples have BET surface areas of 120 to 210 m 2 / g at pore volumes of 0.71 to 0.97 ml / g.
- the claimed in the patent compacts having an outer diameter of 0.8 to 20 mm and a BET surface area of 30 to 400 m 2 / g have a pore volume of 0.5 to 1.3 ml / g.
- the moldings having a bulk density of 350 to 750 g / l consist of at least 99.8 wt .-% silica (other ingredients ⁇ 0.2 wt .-%) and reach at an abrasion ⁇ 5 wt .-% mechanical stabilities of 10 to 250 Newtons.
- catalysts for the production of vinyl acetate monomer containing palladium, gold and alkali acetate are claimed.
- EP 997192 Bl describes palladium-supported catalysts (Pd / Au / alkali, Pd / Cd / alkali or Pd / Ba / alkali systems), which are based on moldings of pyrogenically prepared mixed oxides.
- the shaped bodies underlying the catalyst have an outer diameter of 0.8 to 25 mm, a BET surface area of 5 to 400 m 2 / g and a pore volume of 0.2 to 1.8 ml / g and are composed of at least two from the group SiO 2 , Al 2 O 3, TiO 2 and ZrO 2 in any order but with the exception of SiO 2 / Al 2 O 3 mixed oxides together, other constituents being ⁇ 1% by weight.
- the described support materials have compressive strengths of 5 to 350 Newtons and bulk densities of 250 to 1500 g / l. Based on these support materials, catalysts are claimed, the palladium, gold and alkali compounds or palladium, cadmium and alkali compounds or palladium, barium and
- the alkali compound in a preferred embodiment is potassium acetate.
- the catalyst is used to prepare unsaturated esters, e.g. Vinyl acetate monomer used in the gasase.
- EP 464633 describes a catalyst having at least one passage channel with an inner diameter of the channel of at least one millimeter, the palladium and / or its compounds in an amount of 1 to 20 grams / liter and optionally gold and / or its compounds in an amount of 0, 1 to 10 grams / liter. At least 95% of the palladium, gold and / or compounds thereof extend in a range from the surface up to 0.5 mm below the surface of the support (coated catalyst).
- the catalyst is used to prepare unsaturated esters (e.g.
- Vinyl acetate by reaction of an olefin (e.g., ethene) with an organic carboxylic acid (e.g., acetic acid) and oxygen in the gas phase.
- an olefin e.g., ethene
- an organic carboxylic acid e.g., acetic acid
- the object of the invention is to improve the prior art and to provide catalysts with lower bulk densities based on pyrogenic metal oxides, such as pyrogenic SiO 2, which have the lowest possible contamination of metals, carbon and phosphorus, at the same time have a high strength and have improved selectivity and higher activity than known catalysts.
- pyrogenic metal oxides such as pyrogenic SiO 2
- the invention relates to a process for the preparation of catalysts for the gas phase oxidation of olefins, comprising the steps:
- the fumed metal oxide powders are replaced by a
- Silica Si x O y
- alumina Al x O y
- titanium oxide Ti x O y
- zirconium oxide Zr x O y
- cerium oxide Ce x O y
- silica is used, more preferably silica (SiO 2 ) (WACKER HDK® T40).
- pyrogenically prepared metal oxide powder or mixtures of different metal oxide powders are introduced slowly into a solvent, preferably water, by means of stirring energy. To avoid premature gelation, this is preferably done within 5 to 90 minutes.
- a solvent preferably water
- Organic solvents may also be used, but these involve the risk of carbon contamination of the later catalyst support.
- water in a highly pure form Fe ⁇ 2 ppb
- specially purified water is used which has a resistance of> 18 Mega ⁇ hm * cm.
- the components are ground in an attrition mill, for example an annular gap mill.
- annular gap mill a centrically mounted grinding cone rotates in a bell-shaped hollow cone.
- the material to be milled enters the bottom of the mill, is crushed in the annular gap between the grinding cone and the inner wall of the housing and occurs in the upper part of the mill, which is also called bell mill out.
- the suspension obtained can be collected in a container and recirculated back to the mill inlet.
- annular gap mills it is also possible to use all other types of mill known to the person skilled in the art for wet grinding, for example a stationary or horizontal agitator ball mill.
- the solvent is preferably kept at room temperature in all sections during a circulation.
- an internal cooling circuit in the mill can be provided for eliminating possibly occurring temperature gradients.
- the activation of the suspension can alternatively also be carried out with the aid of various dispersing apparatus, for example by means of a dissolver or planetary dissolver.
- the metal oxide powder is dispersed in water with the aid of a dissolver disk and redispersed at a peripheral speed of at least 8 m / s, preferably at least 12 m / s, for at least 25 min.
- the suspension is finely dispersed by means of a dissolver, ultrasonic disperser, planetary dissolver, high-energy mill or high-purity ball mill for at least 25 minutes.
- the addition of the solid (metal oxide and / or mixture of various metal oxides) to the solvent may also be effected during the activation step. Regardless of whether the solids input takes place beforehand or during the activation step, it is preferable to continue treatment for a period of 0.5 to 4 hours after solids have been added.
- grinding tools for example, beads made of steel, glass, alumina, zirconium oxide, zirconium silicate, silicon carbide, silicon nitride or other materials known to those skilled in the art can be used. Preference is given to materials of zirconium silicate, zirconium oxide, silicon nitride, particularly preferably of silicon nitride.
- Mahlperlen catchmesser be usually 0.8 to 2.0 millimeters.
- a homogeneous suspension according to the invention is present when the suspension is as agglomerate-free as possible. Agglomerates cause inhomogeneities in the later ceramic structure of the respective application, e.g. as a catalyst support. In order to ensure freedom from agglomeration, the suspensions can also be freed by sieving residual agglomerates at the end of the dispersion.
- a low viscosity (e.g., ⁇ 2 Pa s) and yield point is important for optimal homogenization of the suspension. These can be achieved by pH change. In the case of fumed silica this can be done by adding an acid.
- the pH is maintained within a range of 2.0 to 4.0, preferably 2.5 to 3.5, both during the pre-suspension and during the activation step. This can be done by optional Addition of an acid or a base happen.
- acid or base it is possible to use all mineral or non-mineral acids or bases known to the person skilled in the art, which later leave no or only negligible impurities in the molding. As the acid is preferred
- Hydrochloric acid or nitric acid is used and as the base ammonia, preferably an aqueous ammonia solution.
- the solids content within the metal oxide suspension is preferably 5 and 40% by weight, preferably between 10 and 30% by weight and particularly preferably between 15 and 25% by weight. This is independent of whether the metal oxide suspension was prepared in two separate steps or the metal oxide powder was added only during the activation step.
- the suspension with the activated metal oxide is converted from its homogeneous, stable, low-viscosity state by a pH change or by further addition of one or more metal oxides in a state in which the suspension coagulates and solidifies to a pasty mass ,
- the coagulated state one can speak of a viscoelastic solid, i. the memory module G 'is many times higher than the loss modulus G' '.
- the metal oxide added for the coagulation may also differ from the metal oxide added in the presuspension and / or the activation step.
- aqueous ammonia solution happen to facilitate the gelling process.
- the pH may be in a range of 2 to be held until 4.
- a base for example, an aqueous ammonia solution
- the pH may be adjusted to within the range of 4 to 10, more preferably 5 to 8.
- the coagulation step can also be generated only by a change in the pH.
- no further metal oxide is added.
- the coagulation of the suspension occurs only by pH change by means of an acid or base.
- the pH adjustment is preferably done by the aid of bases such as NaOH, KOH, NH 3 or their aqueous solutions. These are slowly, preferably drop-shaped, added to the activated suspension to a final value in a range from 4 to 10, particularly preferably 5 to 8.
- NH 3 is particularly preferably used here.
- the suspension can be expanded by adding NH 3 from its homogeneous, stable, low-viscosity region into one region be transferred, in which the suspension coagulates and solidifies.
- the suspension was preferably suitable for shaping especially after little addition of NH 3.
- a typical ratio of pyrogenic silica, which itself has a pH of 3.9 to 4.5, to 1% of NH 3 solution is 45 to 1.
- Stable shaped bodies can arise when the suspension is at a pH of 5 , 6 to 6.9, preferably from 6.0 to 6.4. The pH of the resulting suspension is therefore just below the neutral pH of 7.0. After adjusting to the above pH, the suspension absorbs within a few minutes and forms a moldable mass with viscoelastic behavior.
- Viscoelastic behavior means that in a rheological deformation experiment in oscillation, the storage modulus G 'is greater than the loss modulus G' '.
- the storage modulus G 'in the context of the invention should be at least 10000 Pa, preferably at least 50,000 Pa, and the quotient G "/ G' should be less than 1, preferably less than 0.55 and most preferably less than 0.25.
- the respective module was using
- Plate-plate geometry measured at a shear gap of 1.5 mm, or in another embodiment, 2 mm at a temperature of 23 ° C.
- the inventive use of the composition according to the invention is characterized by particular long-term stability of the viscoelastic behavior. This means that the storage module G 'after a storage period of 1 week at room temperature in a closed container has fallen to a maximum of 70% of the initial value, preferably a maximum of 90% of the initial value, the module using plate-plate geometry with a shear gap of 1.5 mm or, in another embodiment, 2.0 mm at a temperature of 23 ° C.
- the solids content of metal oxide in the molding composition is, for example, in the case of pyrogenic SiO 2 ⁇ based carrier materials 10 to 40 wt .-%.
- the solids content in the dispersion of 40% by weight can be increased up to 60% by weight, as in the precipitated silica, for example.
- the shaping of the mass can be done for example by extrusion, tableting or pressing.
- the shaped catalyst body is produced by extrusion. All devices known to those skilled in the art, such as extruders, screw extruders, tableting machines, extruders, ram extruders, are conceivable here.
- a ram extruder is used, in the use of which no further or only slight shearing forces act on the shaping compound, which could lead to liquefaction of the mass or phase separation of the molding compound.
- the geometry of the shaped catalyst body results from the respectively selected shaping tool. Manufactures include geometries such as rings, pellets, cylinders, carriage wheels, balls, etc.
- the length of rings and pellets is defined using a cutter immediately after molding.
- the molding is dried by means of methods known to the person skilled in the art (drying oven, IR heating, microwave). The drying is carried out at temperatures between 25 ° C and 200 0 C, preferably between 30 0 C and 100 0 C, more preferably between 40 ° C and 80 ° C.
- the drying time depends on the quantitative ratio of metal oxide to water, but is between 0.5 and 50 hours, preferably between 2 and 30 hours.
- the drying of the shaped catalyst body is very critical, since too fast drying (for example, too high temperatures or low humidity), the moisture still contained can not escape quickly enough from the material on the pores and thus the body can get cracks.
- Suitable calcining methods are all customary processes known to the person skilled in the art. Preference is given to calcining in an oven under an air atmosphere, wherein the oxygen content can be varied. The air can be mixed with another gas. For this purpose, various shielding gases come into question. Suitable protective gases are all protective gases known to those skilled in the art, particularly preferably nitrogen, argon or helium. The air can also be completely replaced by the inert gas.
- the calcination is carried out at temperatures between 500 0 C and 1250 ° C, preferably between 700 ° C and HOO 0 C and more preferably between 850 0 C and 1000 0 C.
- the sintering time is between 0.5 and 20 hours, a typical sintering period is between 2 and 10 hours.
- the calcination can under
- the calcining step reduces the surface area of the catalyst support, which is an important size for the catalytic process.
- the support materials according to the invention because of their excellent homogeneity, exhibit sufficient stability even without calcination or after calcination at low temperatures, they have, in addition to the higher purity, significantly higher levels
- the catalysts obtained from the process according to the invention are further distinguished by the fact that the
- Shaped bodies without the usual addition of excipients / additives, such as extrusion aids, pore formers or sols are produced.
- auxiliaries By dispensing with auxiliaries, the high chemical purity of (for example pyrogenic) metal oxides can be maintained.
- the carrier form of the materials is not critical to the process of the invention. Whether the active components are added to the pasty mass before the shaping step and thus already present more or less finely dispersed on the carrier material after the shaping step or only after the final
- the sum of impurities, ie all elements except the metal oxides M x O y or mixtures of different metal oxides, for example when using silicon dioxide Si and O, is always less than 400 ppm, preferably less than 100 ppm, particularly preferably less than 20 ppm .
- the process according to the invention makes it possible to produce moldings with a total of impurities (all metals and also phosphorus and sulfur and carbon) of less than 10 ppm and ideally even less than 1 ppm.
- dopants inorganic metal salts can be selected.
- any cationic species is suitable as counterion to this anionic component. It is preferably a cation from the group of
- Alkali or alkaline earth ions Most preferably, an alkali cation is used.
- the inventive use of finely divided oxides gives shaped catalyst bodies with very high surface areas.
- the achieved BET surface areas are between 30 m 2 / g and 500 m 2 / g, preferably between 150 m 2 / g and 450 m 2 / g and more preferably between 250 m 2 / g and 400 m 2 / g.
- the finely divided oxides furthermore bring about the production of a shaped body with a high pore volume which is between 0.5 ml / g and 1.3 ml / g, preferably between 0.7 ml / g and 1.25 ml / g and particularly preferably between 0, 9 ml / g and 1.2 ml / g.
- fine-pore shaped bodies can be formed from the finely divided metal oxides.
- the proportion of pores with a diameter between 10 nm and 20 nm is typically more than 60%, preferably more than 70% and most preferably more than 80%.
- the conversion of the shaped body into an active catalyst takes place by applying one or more catalytically active compounds or one or more precursor compounds and / or one or more promoter compounds, which can be converted into one or more catalytically active compounds in a subsequent step.
- all processes known to those skilled in the art which lead to catalysts for the gas phase oxidation of olefins can be used.
- the addition of one or more promoter compounds can also take place after the conversion of the shaped bodies into a catalyst in a separate step.
- the application of one or more promoter compounds separately in an upstream or downstream process step for the application of one or more catalytically active compounds or one or more Precursor compounds take place.
- the finished catalysts have advantages in terms of activity (space-time yield), selectivity (lower side reaction: ethene combustion to carbon dioxide and lower ethyl acetate formation rate) and / or long-term stability due to the novel super-surface support materials based thereon.
- catalytic components for coating the shaped bodies preference is given in the process according to the invention to an or several systems from the group containing Pd / Au / alkali compounds, Pd / Cd / alkali compounds and Pd / Ba / alkali compounds for use.
- One or more of the abovementioned components are applied to the carrier by impregnation, spraying, vapor deposition, immersion or precipitation of the Pd and / or Au and / or Cd and / or Ba metal compounds.
- these components can also be obtained by reducing the reducible metal compounds supported on the support, and / or by washing to remove any chloride content, by impregnation with alkali metal acetate or alkali compounds which convert wholly or partly to alkali metal acetate under the reaction conditions in the production of vinyl acetate monomer. be applied in a suitable order.
- potassium compounds such as potassium acetate
- All other components and / or promoters known to those skilled in the art for increasing the catalyst activity and / or catalyst selectivity are likewise possible.
- Shaped bodies in particular in the form of hollow cylinders (ring extrudates), are impregnated with a solution containing palladium and / or gold according to one embodiment of the invention.
- the support materials used can be impregnated with a basic solution which may contain one or more basic compounds.
- the basic compound or compounds serve to convert the palladium compound and gold compound into their hydroxides.
- the application of various noble metal compounds can be carried out in succession in one step or in several steps. Between these steps, an intermediate drying and / or calcination and / or one or more reduction steps can take place.
- the addition of base may also be carried out simultaneously with the noble metal-containing solution (s).
- the shaped body can first be coated with one or more basic compounds before the addition of one or more noble metal-containing solutions takes place.
- an intermediate drying step may be carried out.
- the compounds in the basic solution can consist of alkali metal hydroxides, alkali metal bicarbonates, alkali metal carbonates, alkali metal silicates or mixtures of these substances. Preference is given to using potassium hydroxide, sodium hydroxide and / or sodium metasilicate.
- Suitable gold salts are gold (III) chloride and tetrachloroauric (III) acid.
- potassium palladium chloride, sodium palladium chloride and / or tetrachloroauric acid can be used.
- Impregnation of the catalyst support with the basic solution affects deposition of the noble metals on the catalyst support.
- the basic solution may be contacted with this solution either before, simultaneously with the noble metal solution, or after application of the noble metal salt (s) become.
- an intermediate drying and / or a reduction and / or a calcination can be carried out after the first impregnation step.
- the shell thickness can be influenced by the amount of basic compound applied to the support material relative to the desired amount of noble metals. The higher this ratio, the smaller the thickness of the shell being formed.
- the quantitative ratio of basic compound to the noble metal compounds required for a desired shell thickness may depend on the nature of the support material as well as the basic compound chosen and the noble metal compounds. The required ratio is suitably by a few
- the resulting shell thickness can be determined in a simple manner by cutting the catalyst particles.
- Catalyst supports can be coated with the noble metal salts and the basic compounds according to the process of pore volume impregnation. Will with
- the reaction of the noble metal salt solution with the basic solution to form insoluble noble metal compounds can be slow and, depending on the preparation method, is generally completed after 1 to 24 hours. Thereafter, the water-insoluble noble metal compounds are treated with reducing agents.
- a wet reduction for example with aqueous hydrazine hydrate or formaldehyde, or a gas phase reduction, for example with hydrogen, ethene or forming gas, can be carried out.
- the reduction can be carried out at normal temperature or elevated temperature and at normal pressure or elevated pressure, if appropriate also with the addition of inert gases, such as nitrogen.
- the chloride which may be present on the support can be removed by a thorough washing.
- the washing of the catalyst is carried out with water, more preferably with a basic aqueous solution (pH> 7), very particularly preferably with a solution having a pH of 8-12.
- the catalyst preferably contains less than 500 ppm Chloride, more preferably less than 200 ppm chloride.
- the catalyst precursor obtained after the reduction can be dried and finally impregnated with alkali metal acetates or alkali compounds, which under the reaction conditions in the production of vinyl acetate monomer are completely or partially converted to alkali metal acetates.
- it can be impregnated with potassium acetate.
- the pore volume impregnation may again preferably be used. This means: The required amount of potassium acetate is in one
- Solvent preferably water, whose volume is about the absorption capacity of the submitted support material for the total solvent corresponds, dissolved. This volume is approximately equal to the total pore volume of the carrier material.
- the finished catalyst can then be dried to a residual moisture of less than 5%.
- Drying may be carried out in air, optionally under nitrogen, as an inert gas.
- the metal salts may be applied by known methods such as impregnation, spraying, vapor deposition, dipping or precipitation.
- the detailed preparation of supported catalysts of the systems Pd / alkali / Cd or Pd / alkali / Ba on suitable support materials can be found in US Pat. No. 4,093,559 (Pd / Cd) and EP 565952 (Pd / Ba without
- the catalyst For the synthesis of vinyl acetate monomer, it is expedient to use the catalyst with 0.1 to 5.0% by weight of palladium and 0.2 to 3.5% by weight of gold or 0.1 to 3.5% by weight of cadmium or from 0.1 to 3.5% by weight of barium and from 0.5 to 15% by weight of potassium, based in each case on the weight of the carrier used.
- the loadings can vary depending on the catalyst system used (Pd / Au system, Pd / Cd system or Pd / Ba system).
- the concentration data correspond to volume-related concentrations of 0.5 to 25 g / l palladium and 1.0 to 17.5 g / l gold or 0.5 to 17.5 g / l cadmium or 0.5 to 17.5 g / l barium and 2.5 to 75 g / l potassium.
- the catalyst loadings are in detail:
- the palladium content of the Pd / alkali / Au catalysts is 0.2 to 3.5 wt .-%, preferably 0.3 to 3.0 wt .-%.
- the gold content of the Pd / alkali / Au catalysts is 0.2 to 3.5 wt .-%, preferably 0.3 to 3.0 wt .-%.
- the potassium content of the Pd / alkali / Au catalysts is 0.5 to 15 wt .-%, preferably 1.0 to 12 wt .-%.
- the palladium content of the Pd / alkali / Cd or Pd / alkali / Ba catalysts is 0.1 to 5.0 wt .-%, preferably 0.2 to 4.5 wt .-%.
- the cadmium content of the Pd / alkali / Cd catalysts is 0.1 to 3.5 wt .-%, preferably 0.2 to 3.0 wt .-%.
- the barium content of the Pd / alkali / Ba catalysts is 0.1 to 3.5 wt .-%, preferably 0.2 to 3.0 wt .-%.
- the Ba content is preferably in the same range as the Cd content in Cd systems.
- the potassium content of the Pd / alkali / Cd or Pd / alkali / Ba catalysts is 0.3 to 10 wt .-%, preferably 0.5 to 9 wt .-%.
- the appropriate amounts of the palladium and gold compounds in a volume of water which corresponds to about 10 to 100% of the water absorption capacity of the submitted support material, can be solved. Likewise, it can be done in the preparation of the basic solution.
- the moldings of the invention show, respectively, low pressure losses, low bulk densities, large outer surfaces per unit volume of a reaction vessel, good mass and heat transport and in particular compared to known hollow cylinders and other carrier forms, such as honeycomb carrier materials, a significantly increased fracture and Abrasion resistance.
- the catalytically active noble metal centers can be used in the catalysts according to the invention with the same amount of noble metal be removed from each other (higher long-term stability for the same activity) or at higher distances higher noble metal loadings can be achieved (higher activity with the same long-term stability achievable).
- the concentration of catalytically active metals Pd / Au or Pd / Cd or Pd / Ba
- the catalysts which reach high temperature maxima with correspondingly high formation of undesired by-products
- Catalyst composition adapted to the carrier material and be balanced with the reactor geometry (heat dissipation).
- the supported catalysts according to the invention can be used for the preparation of unsaturated esters of olefins, organic acids and oxygen in the gas phase.
- the supported catalysts of the invention can be used for the production of vinyl acetate monomer.
- ethene, acetic acid and molecular oxygen or air in the gas phase optionally with the addition of inert gases, at temperatures of 100 and 250 0 C and at normal or elevated pressure, for example 1 to 25 bar, reacted in the presence of the supported catalyst according to the invention .
- space velocities with respect to the gas phase 1000 to 5000 standard liters of gas mixture per liter of catalyst and per hour are realized.
- the catalyst In the process for preparing vinyl acetate monomer, the catalyst is first slowly loaded with the reactants. During this start-up phase, the activity of the catalyst increases and usually reaches its final level only after days or weeks.
- Supported catalysts achieve a significantly improved product yield due to increased activity and / or improved selectivity.
- the catalysts according to the invention can also be used for
- Acetoxylation of olefins such as propene
- olefins such as propene
- the performance of the supported catalysts based on hollow cylinders (ring extrudates) according to the invention is explained in the following examples. In particular, ring extrudates based on pyrogenically prepared silicon dioxides are discussed here.
- the stated bulk densities are determined by filling a tube with an inside diameter of 33 millimeters.
- Activity and selectivity of the catalysts from the following Examples and Comparative Examples are measured over a period of up to 200 hours.
- the catalysts are tested in an oil tempered flow reactor (reactor length 1200 mm, inner diameter 19 mm) at an absolute pressure of 9.5 bar and a space velocity (GHSV) of 3500 Nm / (m * h) with the following gas composition: 60 vol. % Ethene, 19.5% by volume of carbon dioxide, 13% by volume of acetic acid and 7.5% by volume of oxygen.
- the catalysts are investigated in the temperature range from 130 to 180 ° C., measured in the catalyst bed.
- the reaction products are analyzed at the outlet of the reactor by means of online gas chromatography.
- the space-time yield of the catalyst is determined in grams of vinyl acetate monomer per hour and liter of catalyst (g (VAM) / l cat * h). Carbon dioxide, which is formed in particular by the combustion of ethene, is also determined and used to assess the catalyst selectivity.
- the liquid reaction products are collected in a container maintained at 15 ° C and the condensate obtained is analyzed by gas chromatography to determine the liquid by-products (e.g., ethyl acetate).
- the formation rates of the liquid by-products are always given based on vinyl acetate monomer, e.g. Ethyl acetate formation rate in mg (ethyl acetate) / g (VAM).
- the BET surface area is determined in accordance with DIN 66131 with nitrogen.
- the pore distribution is determined by means of mercury porosimetry.
- the strength is with the help of Zwick Z 010
- Example 1 (Carrier Production by Milling and Additional Metal Oxide)
- T40 is stirred into the dispersion until a pasty, gel-like mass is formed.
- This mass is extruded in a ram extruder by a suitable tool to the desired shapes and optionally cut to the desired length of the molding.
- the resulting molded articles - in this case rings 5.5 mm long, 5.5 mm outside diameter and 2.5 mm bore - are dried for 24 hours at a temperature of 85 ° C and a humidity of 75 % and then calcined at 900 0 C for a period of 8 hours.
- Ring carrier bodies have a surface area (BET surface area) of 290 m 2 / g and a pore volume of 1.2 ml / g.
- the mechanical strength of the rings in the transverse direction is 10 N.
- the bulk density is 320 grams per liter.
- Example 2 (carrier preparation by grinding and pH adjustment) 4 kilograms of fumed silica (WACKER HDK ® T40) are stirred into 35 kilograms of deionized water. By adding hydrochloric acid, a pH of 2.8 is set and kept constant. With constant stirring, an additional 4.5 kilograms of pyrogenic silica (WACKER HDK® T40) are stirred in. After complete addition of the metal oxide powder is homogenized for a further 10 minutes before the suspension for a period of 45 minutes in a stirred ball mill with grinding beads of silicon nitride (diameter of the grinding beads 2.0 mm, degree of filling 70 vol .-%) under pH consistency at a pH of 2.8 by adding additional hydrochloric acid is ground.
- WACKER HDK ® T40 fumed silica
- the angular velocity during the grinding step is 11 meters per second.
- an aqueous ammonia solution is added to the suspension, with constant stirring, until a pH of 6.2 is obtained and at this point gelling of the mass takes place.
- the mass obtained is extruded in a ram extruder by a suitable tool to the desired shapes and optionally cut to the desired length of the molding.
- the resulting moldings in this case rings with a
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 260 m 2 / g and a pore volume of 1.1 ml / g.
- the mechanical strength of the rings in the transverse direction is 10 N.
- the bulk density is 280 grams per liter.
- Example 3 (carrier preparation without grinding and pH
- the mass is extruded in a ram extruder by a suitable tool to the desired shapes and cut to the desired length of the molding.
- the resulting molded articles - in this case rings with a length of 6 mm, an outer diameter of 6 mm and a bore of 3 mm - are dried for 24 hours at a temperature of 85 ° C and a relative humidity of 70%.
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 350 m 2 / g and a pore volume of 1.1 ml / g.
- the mechanical strength of the rings is 17 N.
- the bulk density is 340 grams per liter.
- the moldings produced in this way have the following impurities (all data in ppm): Cu (0.03), Fe (2), Ti (0.05), Al (0.3), Ca (0.4), Mg ( 0.3), Na (0.3), K (0.2), Ni (0.5), Cr (0.03), P (0.06), C undetectable and S undetectable.
- the catalyst is washed with an aqueous ammonia solution with a proportion of 0.25 wt .-% ammonia for a period of 45 hours.
- the catalyst is at a temperature reduced by 200 ° C for a period of 5 hours with forming gas (95% N2 / 5% H 2 ).
- the catalyst with an acetic acid-containing potassium acetate solution is impregnated (71.65 grams of potassium acetate in 600 milliliters of acetic acid) and finally dried at a temperature of 8O 0 C for a period of 5 hours in vacuo.
- the finished catalyst has a concentration of 1.6% by weight of palladium (5.1 g / l), 2.1% by weight of gold (6.7 g / l) and 5.2% by weight of potassium ( 16.6 g / l).
- activities of 800 g (VAM) / l Kat * h (156 g (VAM) / g Pd * h) reach at ethene selectivities of 90.5%.
- the ethyl acetate formation rate is 0.35 grams of ethyl acetate per kilogram of vinyl acetate formed.
- Example 1 500 g of a SiO 2 support material from Example 1 are prepared analogously to Example 4, but the concentrations of the impregnating solutions are chosen so that the finished catalyst has a concentration of 2.0% by weight of palladium (6.4 g / l), 2, 0 wt .-% gold (6.4 g / l) and 6.5 wt .-% potassium (20.8 g / l).
- this catalyst according to the invention can be in the test in the reactor under the conditions described above, activities of 930 g (VAM) / l Kat * h (145 g (VAM) / g Pd * h) achieve ethene selectivities of 92.5%.
- the ethyl acetate formation rate is 0.35 grams of ethyl acetate per kilogram of vinyl acetate formed.
- the catalyst is impregnated with an acetic acid-containing potassium acetate solution (11.46 grams of potassium acetate in 88 milliliters of acetic acid) and finally dried at a temperature of 80 0 C for a period of 5 hours in vacuo.
- the finished catalyst has a concentration of 1.6% by weight of palladium (4.5 g / l), 2.1% by weight of gold (5.9 g / l) and 5.2% by weight of potassium ( 14.6 g / l).
- this catalyst according to the invention can be in the test in the reactor under the conditions described above, activities of 750 g (VAM) / l Kat * h (167 g (VAM) / g Pd * h) reach at ethene selectivities of 90.5%.
- the ethyl acetate formation rate is 0.55 grams of ethyl acetate per kilogram of vinyl acetate formed.
- Example 3 80 grams of a SiO 2 support material from Example 3 are impregnated with 88 milliliters of an aqueous solution containing 5.14 grams of a 41.6 percent (wt%) solution of tetrachloroauric acid and 8.47 grams of a 20.0 percent (Wt.%) Solution of tetrachloropalladic acid. After a period of 2 hours, the catalyst is dried in a next step in a vacuum at a temperature of 80 0 C for a period of 5 hours. Subsequently, 44.5 milliliters of a 1 molar sodium carbonate solution are applied together with 43.5 milliliters of distilled water. After a duration of 2
- the catalyst is dried at a temperature of 80 0 C for a period of 5 hours in vacuo. Subsequently, the catalyst is washed with an aqueous ammonia solution in a proportion of 0.25 wt .-% ammonia for a period of 30 hours. The catalyst is reduced at a temperature of 200 ° C. for 5 hours with forming gas (95% N 2 /5% H 2 ). Subsequently, the catalyst is impregnated with an acetic acid-containing potassium acetate solution (13.43 grams of potassium acetate in 88 milliliters of acetic acid) and finally dried at a temperature of 80 0 C for a period of 5 hours in vacuo. The finished catalyst has a concentration of 1.9% by weight of palladium (6.5 g / l), 2.4% by weight of gold (8.2 g / l) and 6.0% by weight of potassium ( 20.4 g / l).
- this catalyst according to the invention can be in the test in the reactor under the conditions described above, activities of 800 g (VAM) l Kat * h (124 g (VAM) / g Pd * h) reach at ethene selectivities of 90.2%.
- the ethyl acetate formation rate is 0.45 grams of ethyl acetate per kilogram of vinyl acetate formed.
- the catalyst is reduced at a temperature of 200 0 C for a period of 5 hours with forming gas (95% N2 / 5% H2).
- the catalyst is impregnated with an acetic acid-containing potassium acetate solution (3.30 grams of potassium acetate in 36 milliliters of acetic acid) and finally dried at a temperature of 8O 0 C for a period of 4 hours in vacuo.
- the finished catalyst has a concentration of 1.5% by weight of palladium (8.1 g / l), 0.7% by weight of gold (3.8 g / l) and 2.1% by weight of potassium ( 11.3 g / l).
- Example 1 100 grams of a SiO 2 support material from Example 1 are impregnated with 120 milliliters of an acetic acid-containing solution containing 5.17 grams of cadmium acetate, 6.02 grams of potassium acetate, 8.74 grams of palladium acetate, and 1.33 grams of manganese acetate. After a period of 2 hours, the catalyst is dried at a temperature of 80 0 C for a period of 5 hours in vacuo. The finished catalyst has a concentration of 3.8% by weight of palladium (12.2 g / l), 2.0% by weight of cadmium (6.4 g / l), 2.2% by weight of potassium ( 7.0 g / l) and 0.25 wt% manganese (0.8 g / l).
- this catalyst according to the invention can be in the test in the reactor under the conditions described above activities of 900 g (VAM) l Kat * h (74 g (VAM) / g Pd * h) reach at ethene selectivities of 92.8%.
- the ethyl acetate formation rate is 0.70 grams of ethyl acetate per kilogram of vinyl acetate formed.
- spherical support materials with a diameter of 6 millimeters bentonite (KA-120, the company Süd Chemie, bulk density 540 grams / liter) are impregnated with 60 milliliters of an acetic acid-containing solution containing 4.55 grams of cadmium acetate, 5, Contains 34 grams of potassium acetate, 5.17 grams of palladium acetate and 0.36 grams of manganese acetate. After a period of 2 hours, the catalyst is dried at a temperature of 80 ° C for a period of 5 hours in vacuo.
- the finished catalyst has a concentration of 2.3 wt .-% palladium (12.4 g / l), 1.8 wt .-% cadmium (9.7 g / l), 2.0 wt .-% potassium ( 10.8 g / l) and 0.07 wt% manganese (0.4 g / l).
- activities of 560 g (VAM) 1 cat * h (45 g (VAM) / g Pd * h) can be achieved with ethene selectivities of 92.8%.
- the ethyl acetate Formation rate is 1.30 grams of ethyl acetate per kilogram of vinyl acetate formed.
- Example 9 (carrier preparation without grinding and pH
- the moldings according to the invention have a surface area (BET surface area) of 205 m 2 / g and a pore volume of 0.75 ml / g.
- the mechanical strength of the rings is 45 N.
- the bulk density is 370 grams per liter.
- the shaped bodies produced in this way have the following impurities (all data in ppm): Cu (0.03), Fe (4), Ti (0.05), Al (1.1), Ca (1.2), Mg ( 0.3), Na (49), K (4), Ni (0.5), Cr (0.3), P (0.06), C undetectable and S undetectable.
- Example 10 Example 10:
- the catalyst is dried in a next step in a vacuum at a temperature of 80 0 C for a period of 5 hours. Subsequently, 236 milliliters of a 1 molar sodium carbonate solution are applied together with 139 milliliters of distilled water. After a period of 2 hours, the catalyst is dried at a temperature of 80 0 C for a period of 5 hours in vacuo. Subsequently, the catalyst is washed with an aqueous ammonia solution with a proportion of 0.25 wt .-% ammonia for a period of 45 hours.
- the catalyst is reduced at a temperature of 200 ° C for 5 hours with forming gas (95% N2 / 5% H 2 ). Subsequently, the catalyst is impregnated with an acetic acid-containing potassium acetate solution (71.65 grams of potassium acetate in 375 milliliters of acetic acid) and finally dried at a temperature of 80 0 C for a period of 5 hours in vacuo.
- the finished catalyst has a concentration of 2.0% by weight of palladium (7.4 g / l), 2.0% by weight of gold (7.4 g / l) and 6.5% by weight of potassium ( 24.1 g / l).
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DE102006058800A DE102006058800A1 (de) | 2006-12-13 | 2006-12-13 | Verfahren zur Herstellung von Katalysatoren und deren Verwendung für die Gasphasenoxidation von Olefinen |
PCT/EP2007/063380 WO2008071610A2 (de) | 2006-12-13 | 2007-12-06 | Verfahren zur herstellung von katalysatoren und deren verwendung für die gasphasenoxidation von olefinen |
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Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006058813A1 (de) * | 2006-12-13 | 2008-06-19 | Wacker Chemie Ag | Verfahren zur Herstellung von stabilen, hochreinen Formkörpern aus pyrogenen Metalloxiden ohne Zusatz von Bindemitteln |
DE102008054760A1 (de) | 2008-12-16 | 2010-06-17 | Wacker Chemie Ag | Heterogener Katalysator für die Fischer-Tropsch-Synthese und ein Verfahren zu dessen Herstellung |
JP2013514175A (ja) * | 2009-12-16 | 2013-04-25 | ライオンデル ケミカル テクノロジー、 エル.ピー. | パラジウム−金触媒の調製 |
DE102011018532A1 (de) * | 2011-04-26 | 2012-10-31 | Süd-Chemie AG | Basische Katalysatorträgerkörper mit niedriger Oberfläche |
DE102011081786A1 (de) | 2011-08-30 | 2013-02-28 | Wacker Chemie Ag | Verfahren zur Acetoxylierung von Olefinen in der Gasphase |
DE102011083079A1 (de) | 2011-09-20 | 2013-03-21 | Wacker Chemie Ag | Vanadium-Antimon-Mischoxid Katalysator seine Herstellung und Verfahren zur Partialoxidation von Alkoholen zu Aldehyden |
DE102011085165A1 (de) | 2011-10-25 | 2013-04-25 | Wacker Chemie Ag | Verfahren zur Herstellung von Vinylacetat |
DE102012205444A1 (de) | 2012-04-03 | 2013-10-10 | Wacker Chemie Ag | Verfahren zur Herstellung von Vinylacetat |
KR101446116B1 (ko) * | 2012-09-18 | 2014-10-06 | 한화케미칼 주식회사 | 탄소나노튜브 제조용 금속촉매의 제조방법 및 이를 이용한 탄소나노튜브의 제조방법 |
KR101641212B1 (ko) * | 2014-06-19 | 2016-07-21 | 에이치앤파워(주) | 막대 형상을 갖는 다목적용 촉매 성형방법 및 이의 방법으로 제조된 촉매. |
DE102014013530A1 (de) | 2014-09-12 | 2016-03-17 | Clariant International Ltd. | Extrudierter Cu-Al-Mn-Hydrierkatalysator |
DE102014222176A1 (de) * | 2014-10-30 | 2016-05-04 | Wacker Chemie Ag | Verfahren zur Herstellung von Vinylacetat |
DE102014223268A1 (de) | 2014-11-14 | 2016-05-19 | Wacker Chemie Ag | Katalysator-Formkörper für die Herstellung von Vinylacetat |
DE102014223246A1 (de) | 2014-11-14 | 2016-05-19 | Wacker Chemie Ag | Verfahren zur Herstellung von Vinylacetat |
DE102014223241A1 (de) | 2014-11-14 | 2016-05-19 | Wacker Chemie Ag | Dotierter Katalysator-Formkörper |
DE102014223759A1 (de) | 2014-11-20 | 2016-05-25 | Wacker Chemie Ag | Entfernung von Sauerstoff aus Kohlenwasserstoff-haltigen Gasgemischen |
DE102014224470A1 (de) | 2014-11-28 | 2016-06-02 | Wacker Chemie Ag | Entfernung von Sauerstoff aus Kohlenwasserstoffgasen |
DE102015205254A1 (de) | 2015-03-24 | 2016-09-29 | Wacker Chemie Ag | Katalysator-Formkörper für die Herstellung von Vinylacetat |
WO2017002576A1 (ja) * | 2015-06-29 | 2017-01-05 | 昭和電工株式会社 | 酢酸アリルの製造方法 |
US10525448B2 (en) * | 2015-07-22 | 2020-01-07 | Basf Corporation | High geometric surface area catalysts for vinyl acetate monomer production |
JP7155118B2 (ja) * | 2017-06-23 | 2022-10-18 | エヌ・イーケムキャット株式会社 | 酢酸ビニル合成用パラジウム-金担持触媒の製造方法 |
DE102017218375A1 (de) | 2017-10-13 | 2019-04-18 | Wacker Chemie Ag | Katalysator zur Herstellung von Vinylacetat |
CN111659460A (zh) * | 2020-07-27 | 2020-09-15 | 上海空间电源研究所 | 一种Pd/ZrO2-HZSM-5双功能催化剂及其制备方法 |
KR102637483B1 (ko) * | 2021-11-11 | 2024-02-16 | 성균관대학교산학협력단 | CuNCo3 역페로브스카이트 결정 나노입자 제조 방법, 이에 의해 제조된 CuNCo3 역페로브스카이트 결정 나노입자 및 이를 포함하는 비귀금속계 수전해 촉매 |
WO2024030440A1 (en) | 2022-08-05 | 2024-02-08 | Celanese International Corporation | Zone catalyst loading and processes for the acetoxylation of olefins using the same |
WO2024030439A1 (en) * | 2022-08-05 | 2024-02-08 | Celanese International Corporation | Catalyst for olefin acetoxylation |
WO2024057789A1 (ja) * | 2022-09-16 | 2024-03-21 | 株式会社レゾナック | 酢酸ビニル製造用触媒の製造方法及び酢酸ビニルの製造方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19943103A1 (de) * | 1999-09-09 | 2001-03-15 | Wacker Chemie Gmbh | Hochgefüllte SiO2-Dispersion, Verfahren zu ihrer Herstellung und Verwendung |
US20080011441A1 (en) * | 2004-07-28 | 2008-01-17 | Degussa Gmbh | Highly-Filled, Aqueous Metal Oxide Dispersion |
Family Cites Families (65)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4113658A (en) * | 1967-04-14 | 1978-09-12 | Stamicarbon, N.V. | Process for homogeneous deposition precipitation of metal compounds on support or carrier materials |
US3923692A (en) * | 1972-08-03 | 1975-12-02 | Nalco Chemical Co | Hydrotreating catalyst |
DE2509251C3 (de) * | 1975-03-04 | 1978-07-13 | Hoechst Ag, 6000 Frankfurt | Verfahren zur Herstellung eines Palladiumkatalysators |
GB1543576A (en) * | 1975-06-10 | 1979-04-04 | Bp Chem Int Ltd | Catalyst support |
US4048096A (en) * | 1976-04-12 | 1977-09-13 | E. I. Du Pont De Nemours And Company | Surface impregnated catalyst |
US4257874A (en) * | 1977-08-31 | 1981-03-24 | E. I. Du Pont De Nemours And Company | Petroleum refinery processes using catalyst of aluminosilicate sols and powders |
DE3132674C2 (de) | 1981-08-19 | 1983-12-08 | Degussa Ag, 6000 Frankfurt | Verfahren zur Herstellung von Preßlingen |
FR2556235A1 (fr) * | 1983-12-09 | 1985-06-14 | Pro Catalyse | Procede de fabrication d'un catalyseur a base d'alumine |
DE3429051C1 (de) * | 1984-08-07 | 1986-02-13 | Degussa Ag, 6000 Frankfurt | Verfahren zur Herstellung von Presslingen aus pulverfoermigem,pyrogen hergestelltem Siliciumdioxid |
JPS62155937A (ja) * | 1985-08-30 | 1987-07-10 | Agency Of Ind Science & Technol | 金および金系複合酸化物を担持した触媒体を製造する方法 |
US5389582A (en) * | 1985-11-06 | 1995-02-14 | Loxley; Ted A. | Cristobalite reinforcement of quartz glass |
JPS6483513A (en) * | 1987-09-24 | 1989-03-29 | Agency Ind Science Techn | Ultrafine gold particle immobilized alkaline earth metallic compound, production thereof, oxidation catalyst, reduction catalyst and combustible gas sensor element |
DE3803895C1 (ar) * | 1988-02-09 | 1989-04-13 | Degussa Ag, 6000 Frankfurt, De | |
DE3803899C1 (ar) * | 1988-02-09 | 1989-04-13 | Degussa Ag, 6000 Frankfurt, De | |
US5030433A (en) * | 1988-07-18 | 1991-07-09 | International Minerals & Chemical Corp. | Process for producing pure and dense amorphous synthetic silica particles |
GB8906726D0 (en) * | 1989-03-23 | 1989-05-10 | Shell Int Research | Titania extrudates |
US5128114A (en) * | 1989-04-14 | 1992-07-07 | E. I. Du Pont De Nemours And Company | Silica microspheres, method of improving attrition resistance |
US5352645A (en) * | 1989-04-14 | 1994-10-04 | E. I. Du Pont De Nemours And Company | Silica microspheres, method of improving attrition resistance and use |
GB8925979D0 (en) * | 1989-11-16 | 1990-01-04 | Shell Int Research | Process for the preparation of extrudates,extrudates,and use of the extrudates |
DE3938723A1 (de) * | 1989-11-23 | 1991-05-29 | Basf Ag | Katalysator zur herstellung von hochmolekularen homo- oder copolymerisaten des ethens sowie dessen herstellung |
US5175136A (en) * | 1990-05-31 | 1992-12-29 | Monsanto Company | Monolithic catalysts for conversion of sulfur dioxide to sulfur trioxide |
EP0464633B1 (en) | 1990-07-03 | 1994-01-19 | Kuraray Co., Ltd. | Catalyst and process for producing unsaturated ester |
US6012304A (en) * | 1991-09-30 | 2000-01-11 | Loxley; Ted A. | Sintered quartz glass products and methods for making same |
DE4142902A1 (de) | 1991-12-23 | 1993-06-24 | Sued Chemie Ag | Formlinge auf der basis von pyrogener kieselsaeure |
DE4142898A1 (de) | 1991-12-23 | 1993-06-24 | Sued Chemie Ag | Formlinge auf der basis von pyrogener kieselsaeure |
TW330160B (en) * | 1992-04-08 | 1998-04-21 | Hoechst Ag | Supported catalyst, process for its preparation and its use for the preparation of vinyl acetate |
US6355587B1 (en) * | 1994-06-30 | 2002-03-12 | Ted A. Loxley | Quartz glass products and methods for making same |
US6818254B1 (en) * | 1995-01-20 | 2004-11-16 | Engelhard Corporation | Stable slurries of catalytically active materials |
US6207610B1 (en) * | 1996-05-17 | 2001-03-27 | Degussa-Huls Ag | Compacts based on pyrogenically produced silicon dioxide |
DE19619961A1 (de) | 1996-05-17 | 1997-11-20 | Degussa | Preßlinge auf Basis von pyrogen hergestelltem Siliciumdioxid |
US5723402A (en) * | 1996-05-30 | 1998-03-03 | Pq Corporation | Silicas with specific contents of cations as supports for olefin polymerization catalysts |
EP0906349B1 (en) * | 1996-06-21 | 2002-11-27 | W.R. Grace & Co.-Conn. | Aggregate supports and olefin polymerization catalysts supported thereon |
TW377306B (en) * | 1996-12-16 | 1999-12-21 | Asahi Chemical Ind | Noble metal support |
DE19723751A1 (de) * | 1997-06-06 | 1998-12-10 | Basf Ag | Formkörper und Verfahren zu dessen Herstellung |
CN1210835A (zh) * | 1997-07-28 | 1999-03-17 | 康宁股份有限公司 | 烧成时间显著缩短的堇青石物体的制备方法 |
US6113829A (en) * | 1997-08-27 | 2000-09-05 | Corning Incorporated | Method of forming and shaping plasticized mixtures by low to moderate shear extrusion |
WO2000007956A1 (en) * | 1998-08-04 | 2000-02-17 | Corning Incorporated | Method for removing organics from green structures during firing |
DE19843693A1 (de) * | 1998-09-24 | 2000-03-30 | Degussa | Trägerkatalysator für die Produktion von Vinylacetatmonomer |
US6313061B1 (en) * | 1998-12-22 | 2001-11-06 | W. R. Grace & Co.-Conn. | Method of making frangible spray dried agglomerated supports and olefin polymerization catalysts supported thereon |
US6383273B1 (en) * | 1999-08-12 | 2002-05-07 | Apyron Technologies, Incorporated | Compositions containing a biocidal compound or an adsorbent and/or catalyst compound and methods of making and using therefor |
CN1197819C (zh) * | 1999-09-01 | 2005-04-20 | 康宁股份有限公司 | 超薄壁堇青石结构体的制造 |
US6287510B1 (en) * | 1999-11-23 | 2001-09-11 | Corning Incorporated | Method of firing green structures containing organics |
DE19959064A1 (de) * | 1999-12-08 | 2001-06-13 | Basf Ag | Trägerkatalysator zur Selektivhydrierung von Alkinen und Dienen |
EP1125632A1 (en) * | 2000-02-07 | 2001-08-22 | Bayer Aktiengesellschaft | Process for the epoxidation of olefins using gold-containing catalysts |
US6569520B1 (en) * | 2000-03-21 | 2003-05-27 | 3M Innovative Properties Company | Photocatalytic composition and method for preventing algae growth on building materials |
US7507687B2 (en) * | 2000-03-22 | 2009-03-24 | Cabot Corporation | Electrocatalyst powders, methods for producing powder and devices fabricated from same |
EP1138387A1 (de) * | 2000-03-29 | 2001-10-04 | Degussa AG | Verfahren zur Herstellung eines Titansilicalitformkörpers |
BR0105790A (pt) * | 2000-04-07 | 2002-03-19 | Ngk Insulators Ltd | Método de produção de colméia cerâmica de cordierite |
US6420308B1 (en) * | 2000-07-07 | 2002-07-16 | Saudi Basic Industries Corp | Highly selective shell impregnated catalyst of improved space time yield for production of vinyl acetate |
DE10114484C2 (de) * | 2001-03-24 | 2003-10-16 | Heraeus Quarzglas | Verfahren für die Herstellung eines Komposit-Werkstoffs mit einem SiO¶2¶-Gehalt von mindestens 99 Gew.-%, und Verwendung des nach dem Verfahren erhaltenen Komposit-Werkstoffs |
WO2002078842A1 (en) * | 2001-03-30 | 2002-10-10 | Council Of Scientific And Industrial Research | A novel catalytic formulation and its preparation |
MY139952A (en) * | 2001-03-30 | 2009-11-30 | Shell Int Research | A process for preparing a catalyst, the catalyst and a use of the catalyst |
WO2002088196A1 (en) * | 2001-04-30 | 2002-11-07 | W.R. Grace & Co.-Conn. | Heterogeneous chromium catalysts and processes of polymerization of olefins using same |
US6887822B2 (en) * | 2001-09-25 | 2005-05-03 | Pq Corporation | Method for making silica supported, crush-resistant catalysts |
DE10163180A1 (de) * | 2001-12-21 | 2003-07-10 | Degussa | Trägerkatalysator |
JP4421201B2 (ja) * | 2002-03-27 | 2010-02-24 | シエル・インターナシヨナル・リサーチ・マートスハツペイ・ベー・ヴエー | 触媒を調製する方法、触媒、および触媒の使用 |
US7572423B2 (en) * | 2002-11-26 | 2009-08-11 | Cabot Corporation | Fumed metal oxide particles and process for producing the same |
DE10255124A1 (de) * | 2002-11-26 | 2004-06-03 | Degussa Ag | Pyrogenes Oxidpulver, Verfahren zu seiner Herstellung und seine Verwendung in einem Separator für eine elektrochemische Zelle |
EP2316567B1 (en) * | 2003-09-26 | 2018-01-24 | 3M Innovative Properties Co. | Nanoscale gold catalysts, activating agents, support media, and related methodologies useful for making such catalyst systems especially when the gold is deposited onto the support media using physical vapor deposition |
US6942713B2 (en) * | 2003-11-04 | 2005-09-13 | Corning Incorporated | Ceramic body based on aluminum titanate |
JP3867232B2 (ja) * | 2004-03-25 | 2007-01-10 | 株式会社 東北テクノアーチ | 触媒ナノ粒子 |
FR2874837B1 (fr) * | 2004-09-08 | 2007-02-23 | Inst Francais Du Petrole | Catalyseur dope et procede ameliore de traitement de charges hydrocarbonees |
US7601671B2 (en) * | 2004-10-28 | 2009-10-13 | Umicore Ag & Co. Kg | Drying method for exhaust gas catalyst |
DE102004063762A1 (de) | 2004-12-29 | 2006-07-13 | Wacker Chemie Ag | Reaktive Kieselsäuresuspensionen |
US8058202B2 (en) * | 2005-01-04 | 2011-11-15 | 3M Innovative Properties Company | Heterogeneous, composite, carbonaceous catalyst system and methods that use catalytically active gold |
-
2006
- 2006-12-13 DE DE102006058800A patent/DE102006058800A1/de not_active Withdrawn
-
2007
- 2007-12-05 SA SA07280669A patent/SA07280669B1/ar unknown
- 2007-12-06 JP JP2009540720A patent/JP5087635B2/ja not_active Expired - Fee Related
- 2007-12-06 WO PCT/EP2007/063380 patent/WO2008071610A2/de active Application Filing
- 2007-12-06 US US12/518,520 patent/US8410014B2/en not_active Expired - Fee Related
- 2007-12-06 KR KR1020097011102A patent/KR101124090B1/ko not_active IP Right Cessation
- 2007-12-06 EP EP07847868A patent/EP2106292A2/de not_active Ceased
- 2007-12-06 SG SG2011091022A patent/SG177197A1/en unknown
- 2007-12-06 RU RU2009126625/04A patent/RU2447939C2/ru not_active IP Right Cessation
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19943103A1 (de) * | 1999-09-09 | 2001-03-15 | Wacker Chemie Gmbh | Hochgefüllte SiO2-Dispersion, Verfahren zu ihrer Herstellung und Verwendung |
US20080011441A1 (en) * | 2004-07-28 | 2008-01-17 | Degussa Gmbh | Highly-Filled, Aqueous Metal Oxide Dispersion |
Also Published As
Publication number | Publication date |
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KR101124090B1 (ko) | 2012-04-19 |
RU2009126625A (ru) | 2011-02-20 |
CN101541422B (zh) | 2012-12-12 |
JP2010512985A (ja) | 2010-04-30 |
WO2008071610A2 (de) | 2008-06-19 |
US8410014B2 (en) | 2013-04-02 |
RU2447939C2 (ru) | 2012-04-20 |
CN101541422A (zh) | 2009-09-23 |
KR20090082912A (ko) | 2009-07-31 |
WO2008071610A3 (de) | 2008-09-12 |
JP5087635B2 (ja) | 2012-12-05 |
DE102006058800A1 (de) | 2008-06-19 |
SG177197A1 (en) | 2012-01-30 |
US20100022796A1 (en) | 2010-01-28 |
SA07280669B1 (ar) | 2012-05-06 |
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