WO2008071611A1 - Verfahren zur herstellung von stabilen, hochreinen formkörpern aus pyrogenen metalloxiden ohne zusatz von bindemitteln - Google Patents
Verfahren zur herstellung von stabilen, hochreinen formkörpern aus pyrogenen metalloxiden ohne zusatz von bindemitteln Download PDFInfo
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- WO2008071611A1 WO2008071611A1 PCT/EP2007/063381 EP2007063381W WO2008071611A1 WO 2008071611 A1 WO2008071611 A1 WO 2008071611A1 EP 2007063381 W EP2007063381 W EP 2007063381W WO 2008071611 A1 WO2008071611 A1 WO 2008071611A1
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- WO
- WIPO (PCT)
- Prior art keywords
- metal oxide
- suspension
- grinding
- hours
- surface area
- Prior art date
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- 229910044991 metal oxide Inorganic materials 0.000 title claims abstract description 64
- 150000004706 metal oxides Chemical class 0.000 title claims abstract description 64
- 230000001698 pyrogenic effect Effects 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000011230 binding agent Substances 0.000 title abstract description 7
- 238000000227 grinding Methods 0.000 claims description 59
- 238000000465 moulding Methods 0.000 claims description 54
- 238000000034 method Methods 0.000 claims description 40
- 239000000725 suspension Substances 0.000 claims description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000011324 bead Substances 0.000 claims description 21
- 239000003054 catalyst Substances 0.000 claims description 14
- 238000007493 shaping process Methods 0.000 claims description 13
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 12
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 12
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 10
- 238000001354 calcination Methods 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 10
- 238000005345 coagulation Methods 0.000 claims description 9
- 230000015271 coagulation Effects 0.000 claims description 9
- 229910001868 water Inorganic materials 0.000 claims description 9
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 8
- 239000012876 carrier material Substances 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 238000003801 milling Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 238000001238 wet grinding Methods 0.000 claims description 5
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 4
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000011521 glass Substances 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
- 150000001875 compounds Chemical class 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 238000000518 rheometry Methods 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
- 239000007864 aqueous solution Substances 0.000 claims 1
- 230000029219 regulation of pH Effects 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 34
- 229910021485 fumed silica Inorganic materials 0.000 description 29
- 239000011148 porous material Substances 0.000 description 25
- 229920004482 WACKER® Polymers 0.000 description 18
- 235000011837 pasties Nutrition 0.000 description 16
- 239000000463 material Substances 0.000 description 15
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 14
- 239000006185 dispersion Substances 0.000 description 14
- 239000008367 deionised water Substances 0.000 description 13
- 229910021641 deionized water Inorganic materials 0.000 description 13
- 238000002360 preparation method Methods 0.000 description 13
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 9
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 9
- 235000011114 ammonium hydroxide Nutrition 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 238000011049 filling Methods 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 239000002585 base Substances 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 239000000377 silicon dioxide Substances 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 239000004408 titanium dioxide Substances 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- -1 methyl hydroxypropyl Chemical group 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 4
- 239000012255 powdered metal Substances 0.000 description 4
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229920000609 methyl cellulose Polymers 0.000 description 3
- 239000001923 methylcellulose Substances 0.000 description 3
- 235000010981 methylcellulose Nutrition 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000006259 organic additive Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000001879 gelation Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 235000019359 magnesium stearate Nutrition 0.000 description 2
- 239000004200 microcrystalline wax Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000011164 primary particle Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- LNAZSHAWQACDHT-XIYTZBAFSA-N (2r,3r,4s,5r,6s)-4,5-dimethoxy-2-(methoxymethyl)-3-[(2s,3r,4s,5r,6r)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6r)-4,5,6-trimethoxy-2-(methoxymethyl)oxan-3-yl]oxyoxane Chemical compound CO[C@@H]1[C@@H](OC)[C@H](OC)[C@@H](COC)O[C@H]1O[C@H]1[C@H](OC)[C@@H](OC)[C@H](O[C@H]2[C@@H]([C@@H](OC)[C@H](OC)O[C@@H]2COC)OC)O[C@@H]1COC LNAZSHAWQACDHT-XIYTZBAFSA-N 0.000 description 1
- YIWGJFPJRAEKMK-UHFFFAOYSA-N 1-(2H-benzotriazol-5-yl)-3-methyl-8-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carbonyl]-1,3,8-triazaspiro[4.5]decane-2,4-dione Chemical compound CN1C(=O)N(c2ccc3n[nH]nc3c2)C2(CCN(CC2)C(=O)c2cnc(NCc3cccc(OC(F)(F)F)c3)nc2)C1=O YIWGJFPJRAEKMK-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- 239000002841 Lewis acid Substances 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- GEIAQOFPUVMAGM-UHFFFAOYSA-N ZrO Inorganic materials [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 description 1
- 229940063655 aluminum stearate Drugs 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000010335 hydrothermal treatment Methods 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 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
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910001233 yttria-stabilized zirconia Inorganic materials 0.000 description 1
Classifications
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- 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
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- 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
- B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
- B01J21/04—Alumina
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
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- C—CHEMISTRY; METALLURGY
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
- C04B35/481—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates containing silicon, e.g. zircon
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
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Definitions
- the invention relates to the preparation of stable, high-purity moldings of pyrogenic metal oxides without the addition of binders and their use.
- Pyrogenically produced metal oxides are characterized by extreme fineness, high specific surface area, defined, spherical primary particles with a defined particle size
- 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.
- the mass transport in the later catalyzed reaction can be favorably influenced and, on the other hand, a lower mass of carrier 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, for example, with
- Catalyst preparation and / or reactor filling are no longer sufficient and therefore unsuitable as catalyst support materials.
- EP 72390 describes the preparation of pressings from a mixture of fumed metal oxides, water, silica sol and a pressing aid.
- a polyhydric alcohol e.g., 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.
- DE OS 10247314 discloses moldings based on silicon dioxide and / or titanium dioxide, which additionally contain glass fibers.
- the shaped articles are produced by adding powdered silicon dioxide and / or titanium dioxide
- the object of the invention is to improve the prior art and in particular to provide a process for the production of moldings based on pyrogenic metal oxides, such as pyrogenic SiO 2, as well as moldings which have the lowest possible contamination of metals, carbon and phosphorus and at the same time have a high strength.
- pyrogenic metal oxides such as pyrogenic SiO 2
- moldings which have the lowest possible contamination of metals, carbon and phosphorus and at the same time have a high strength.
- the invention relates to a process for the production of moldings, characterized in that at least one pyrogenically prepared metal oxide is suspended in a solvent, the suspension obtained is ground by means of a high energy mill, then the suspension is subjected to a coagulation step with the metal oxide activated by the milling and then the coagulated suspension is subjected to a shaping step.
- the fumed metal oxide powders are made by a flame hydrolysis or a flame oxidation of a
- Metalloxidprecursor obtained in a blast gas flame. This initially produces approximately spherical primary particles which sinter together during the reaction to form aggregates. The aggregates can then agglomerate to form agglomerates. In contrast to the agglomerates, which are usually relatively easy to separate into the aggregates by the introduction of energy, the aggregates are, if at all, further decomposed only by intensive input of energy.
- silicon oxide Si x Oy
- Alumina Al x O y
- titania Ti x O y
- zirconia Zr x O y
- ceria 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.
- these are converted by grinding into a high-energy state.
- This grinding is preferably carried out in the presence of a solvent, preferably water, which dissipates the heat generated during grinding.
- the components are ground in an attrition mill, for example an annular gap mill.
- an 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 from.
- 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 addition of the solid (metal oxide and / or mixture of various metal oxides) to the solvent can also be done during wet milling. Regardless of whether the introduction of solids takes place in advance or is added to the high-energy mill during the milling step, it is preferred to mill for a period of 0.5 to 4 hours after solids have been added.
- 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, more preferably 2.5 to 3.5, both during presuspension and during milling. This can be done by optional addition of an acid or a base.
- 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 leave no or only negligible impurities later in the molding.
- the acid used is preferably hydrochloric acid or nitric acid
- the base used is 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 when wet grinding.
- 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' '.
- a base for example aqueous ammonia solution to facilitate the gelling process.
- the pH may be maintained in a range of 2 to 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 ratio of the amount of additionally added powdered metal oxide to the metal oxide present in the suspension is usually 1: 1 to 1 part of powdered metal oxide to 2 parts of metal oxide in suspension.
- Shaping material is, for example, based on pyrogenic SiO 2 ⁇ 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 coagulation step can also be generated only by a change in the pH.
- slow, preferably the dropwise addition of an aqueous ammonia solution the pH of the activated suspension is increased to a final value in a range of 4 to 10, particularly preferably 5 to 8, wherein a gelation of the mass takes place.
- further mixing is stopped immediately (stopping of the stirrer).
- the solids content of the plasticizable mass is usually 10 to 40 wt .-%.
- the shaping of the mass can be done for example by extrusion, tableting or pressing.
- the shaped 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 press is used, when used on the molding composition no further or only small shear forces act, which could lead to a liquefaction of the mass or a phase separation of the molding composition.
- the geometry of the shaped 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 ratio of metal oxide to water, but is between 0.5 and 50 hours, preferably between 2 and 30 hours.
- the drying of the moldings is very critical because 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 or even disintegrate. After drying the moldings this is subjected to calcination.
- calcination it is possible to use 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.
- 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 0 C, preferably between 700 ° C and 1100 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. But since the support materials of the invention because of their excellent homogeneity sufficient stability even without calcination or after
- the shaped body obtained from the process according to the invention can generally be used in all processes or working steps known to the person skilled in the art in which the properties of the shaped body and in particular of the porous material contained in the shaped body are desired.
- the molding according to the invention is particularly preferably used as a catalyst in chemical reactions or serves as a support material which after application of the respective to the Process adapted active components, corresponding supported catalysts provides.
- the molded articles obtained from the process according to the invention are further distinguished by the fact that they are prepared without the usual addition of auxiliaries / additives, such as extrusion aids, pore formers or sols. By dispensing with auxiliaries, the high chemical purity of (for example pyrogenic) metal oxides can be maintained.
- auxiliaries such as extrusion aids, pore formers or sols.
- 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 distributed on the carrier material after the shaping step or only after the final completion of the
- Catalyst carrier in a subsequent process step, eg. B. by impregnation, are applied, is also not critical to the invention.
- 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 molding having a high pore volume which is between 0.5 ml / g and 1.8 ml / g, preferably between 0.7 ml / g and 1.5 ml / g and particularly preferably between 0, 9 ml / g and 1.3 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 50%, preferably more than 60% and most preferably more than 70%.
- the angular velocity during the grinding step is 11 meters per second.
- 40 grams of powdered fumed silica (WACKER HDK ® T40) are 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 obtained 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 humidity of 75% and then for a period of 1.5 hours at 650 0 C calcined.
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 370 m 2 / g and a pore volume of 1.1 ml / g.
- the mechanical strength of the rings in crosswise direction is 10 N.
- the obtained 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 humidity of 75% and then for a period of 1.5 hours at 550 0 C calcined.
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 280 m 2 / g and a pore volume of 1.1 ml / g.
- the mechanical strength of the rings in crosswise direction is 9 N.
- the ring carrier bodies according to the invention have a surface (BET surface) of
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 310 m 2 / g and a pore volume of 1.0 ml / g.
- the mechanical strength of the rings in crosswise direction is
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 170 m 2 / g and a pore volume of 0.9 ml / g.
- the mechanical strength of the rings in crosswise direction is
- the obtained 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 humidity of 75% and then for a period 1.5 hours at 650 0 C. calcined.
- 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 1.3 ml / g.
- the mechanical strength of the rings in crosswise direction is 8 N.
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 300 m 2 / g and a pore volume of 1.1 ml / g.
- the mechanical strength of the rings in transverse direction is 19 N.
- Example 8 Carrier material preparation analogous to Example 6, but the moldings are calcined at 900 0 C for a period of 2 hours.
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 320 m 2 / g and a pore volume of 1.2 ml / g.
- the mechanical strength of the rings in transverse direction is 13 N.
- 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 1.2 ml / g.
- the mechanical strength of the rings in crosswise direction is 9 N.
- the obtained 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 humidity of 80% and then for a period of 1.5 hours at 650 0 C calcined.
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 330 m 2 / g and a pore volume of 1.2 ml / g.
- the mechanical strength of the rings in transverse direction is 18 N.
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 310 m 2 / g and a pore volume of 1.1 ml / g.
- the mechanical strength of the rings in transverse direction is 22 N.
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 320 m 2 / g and a pore volume of 1.2 ml / g.
- the mechanical strength of the rings in crosswise direction is 25 N.
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 120 m 2 / g and a pore volume of 0.6 ml / g.
- the mechanical strength of the rings in crosswise direction is 60 N.
- Example 14 10 kg of fumed silica (Wacker HDK ® T40) are stirred into 40 kg of deionized water, circulated and for a period of 2 hours in a stirred ball mill with grinding media made of silicon nitride (diameter of the grinding beads 2.0 mm, filling level 70 vol .-%). The angular velocity during the grinding step is 11 meters per second.
- 5 kilograms of powdered pyrogenic silica (WACKER HDK ® T40) are 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 3 mm bore - are dried for 24 hours at a temperature of 85 ° C and a
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 360 m 2 / g and a pore volume of 1.3 ml / g.
- the mechanical strength of the rings in transverse direction is 6 N.
- the bulk density is 270 grams per liter.
- the shaped bodies have a length of 5.5 millimeters, an outer diameter of 5.5 millimeters and a bore of 2.5 millimeters.
- the moldings are calcined at 900 ° C. for a period of 8 hours.
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 290 m 2 / g and a pore volume of 1.2 ml / g.
- the transverse mechanical strength of the rings is 10 N.
- the bulk density is 320 grams per liter.
- 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 humidity of 70% and then for a period of 1.5 hours at 650 0 C calcined.
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 250 m 2 / g.
- the obtained 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 humidity of 75% and then for a period of 1.5 hours at 650 0 C calcined.
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 180 m 2 / g.
- 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 obtained 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 humidity of 75% and then for a period of 1.5 hours at 650 0 C calcined.
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 300 m 2 / g.
- Example 1 9 Example 1 9:
- Silicon nitride (diameter of the grinding beads 2.0 mm, degree of filling 70 vol .-%) milled.
- the angular velocity during the grinding step is 11 meters per second.
- the obtained 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 humidity of 75% and then for a period of 1.5 hours at 650 0 C calcined.
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 85 m 2 / g.
- 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 humidity of 75% and then for a period of 1.5 Calcined at 650 0 C hours.
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 320 m 2 / g.
- Example 21 (Coagulation by change in pH) 4 kg of pyrogenic silica (HDK ® WACKER T40) are stirred into 35 kg 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 constancy at a pH of 2.8 by adding more
- Hydrochloric acid is milled.
- 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 molded articles in this case rings with a length of 5.5 mm, an outer diameter of 5.5 mm and a
- Drilling of 2.5 mm - are dried for 8 hours at a temperature of 85 ° C and a humidity of 75% and then calcined at 650 0 C for a period of 3 hours.
- the ring carrier bodies according to the invention have a surface area (BET surface area) of 270 m 2 / g and a pore volume of 1.2 ml / g.
- the mechanical strength of the rings in crosswise direction is 10 N.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Catalysts (AREA)
- Silicon Compounds (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/518,522 US9044742B2 (en) | 2006-12-13 | 2007-12-06 | Method for producing stable, high-purity molded bodies from pyrogenic metal oxides without the addition of binders |
EP07847869A EP2121180A1 (de) | 2006-12-13 | 2007-12-06 | Verfahren zur herstellung von stabilen, hochreinen formkörpern aus pyrogenen metalloxiden ohne zusatz von bindemitteln |
CN2007800455556A CN101553312B (zh) | 2006-12-13 | 2007-12-06 | 无需加入粘合剂由热解金属氧化物制备稳定、高纯度模制体的方法 |
JP2009540721A JP5102306B2 (ja) | 2006-12-13 | 2007-12-06 | パイロジェニックSiO2からのバインダー無添加の成形体の製造方法 |
BRPI0721080-9A2A BRPI0721080A2 (pt) | 2006-12-13 | 2007-12-06 | Método para a fabricação de corpos moldados de elevada pureza, estáveis feitos de óxidos de metal pirogênicos sem adição de agentes ligantes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006058813.4 | 2006-12-13 | ||
DE102006058813A DE102006058813A1 (de) | 2006-12-13 | 2006-12-13 | Verfahren zur Herstellung von stabilen, hochreinen Formkörpern aus pyrogenen Metalloxiden ohne Zusatz von Bindemitteln |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008071611A1 true WO2008071611A1 (de) | 2008-06-19 |
Family
ID=39332161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/063381 WO2008071611A1 (de) | 2006-12-13 | 2007-12-06 | Verfahren zur herstellung von stabilen, hochreinen formkörpern aus pyrogenen metalloxiden ohne zusatz von bindemitteln |
Country Status (8)
Country | Link |
---|---|
US (1) | US9044742B2 (de) |
EP (1) | EP2121180A1 (de) |
JP (1) | JP5102306B2 (de) |
CN (1) | CN101553312B (de) |
BR (1) | BRPI0721080A2 (de) |
DE (1) | DE102006058813A1 (de) |
WO (1) | WO2008071611A1 (de) |
ZA (1) | ZA200903637B (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE102014223268A1 (de) | 2014-11-14 | 2016-05-19 | Wacker Chemie Ag | Katalysator-Formkörper für die Herstellung von Vinylacetat |
WO2016150894A1 (de) | 2015-03-24 | 2016-09-29 | Wacker Chemie Ag | Katalysator-formkörper für die herstellung von vinylacetat |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012113670A1 (de) * | 2011-02-25 | 2012-08-30 | Evonik Degussa Gmbh | VERFAHREN ZUR HERSTELLUNG VON SiO2-FORMKÖRPERN |
DE102014223241A1 (de) * | 2014-11-14 | 2016-05-19 | Wacker Chemie Ag | Dotierter Katalysator-Formkörper |
CN107758683B (zh) * | 2017-11-24 | 2019-03-01 | 江西鑫陶科技股份有限公司 | 一种分子筛改性粉的制备方法 |
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- 2007-12-06 BR BRPI0721080-9A2A patent/BRPI0721080A2/pt not_active IP Right Cessation
- 2007-12-06 EP EP07847869A patent/EP2121180A1/de not_active Ceased
- 2007-12-06 US US12/518,522 patent/US9044742B2/en not_active Expired - Fee Related
- 2007-12-06 JP JP2009540721A patent/JP5102306B2/ja not_active Expired - Fee Related
- 2007-12-06 WO PCT/EP2007/063381 patent/WO2008071611A1/de active Application Filing
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
WO2013041501A1 (de) | 2011-09-20 | 2013-03-28 | Wacker Chemie Ag | Vanadium-antimon-mischoxid-katalysator, seine herstellung und verfahren zur partialoxidation von alkoholen zu aldehyden |
DE102014223268A1 (de) | 2014-11-14 | 2016-05-19 | Wacker Chemie Ag | Katalysator-Formkörper für die Herstellung von Vinylacetat |
WO2016075201A1 (de) | 2014-11-14 | 2016-05-19 | Wacker Chemie Ag | Katalysator-formkörper für die herstellung von vinylacetat |
WO2016150894A1 (de) | 2015-03-24 | 2016-09-29 | Wacker Chemie Ag | Katalysator-formkörper für die herstellung von vinylacetat |
DE102015205254A1 (de) | 2015-03-24 | 2016-09-29 | Wacker Chemie Ag | Katalysator-Formkörper für die Herstellung von Vinylacetat |
Also Published As
Publication number | Publication date |
---|---|
US9044742B2 (en) | 2015-06-02 |
JP2010513177A (ja) | 2010-04-30 |
ZA200903637B (en) | 2010-07-28 |
US20100144519A1 (en) | 2010-06-10 |
BRPI0721080A2 (pt) | 2014-02-25 |
EP2121180A1 (de) | 2009-11-25 |
JP5102306B2 (ja) | 2012-12-19 |
DE102006058813A1 (de) | 2008-06-19 |
CN101553312B (zh) | 2013-05-22 |
CN101553312A (zh) | 2009-10-07 |
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