CN108191661A - By the method for ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol - Google Patents
By the method for ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol Download PDFInfo
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- CN108191661A CN108191661A CN201711380745.5A CN201711380745A CN108191661A CN 108191661 A CN108191661 A CN 108191661A CN 201711380745 A CN201711380745 A CN 201711380745A CN 108191661 A CN108191661 A CN 108191661A
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- Prior art keywords
- methyl ethyl
- catalyst
- reaction
- carbonate
- ethyl carbonate
- Prior art date
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- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 title claims abstract description 89
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 57
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 33
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 128
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 108
- 239000003054 catalyst Substances 0.000 claims abstract description 108
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 89
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 51
- 235000019441 ethanol Nutrition 0.000 claims abstract description 44
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 27
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 25
- 239000011148 porous material Substances 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 239000002131 composite material Substances 0.000 claims abstract description 12
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 46
- 239000002808 molecular sieve Substances 0.000 claims description 44
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 239000000969 carrier Substances 0.000 claims description 27
- 239000000243 solution Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000012670 alkaline solution Substances 0.000 claims description 20
- 238000002360 preparation method Methods 0.000 claims description 20
- 229910001868 water Inorganic materials 0.000 claims description 19
- 150000001875 compounds Chemical class 0.000 claims description 16
- 229910002651 NO3 Inorganic materials 0.000 claims description 15
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 14
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 12
- AIYUHDOJVYHVIT-UHFFFAOYSA-M caesium chloride Chemical compound [Cl-].[Cs+] AIYUHDOJVYHVIT-UHFFFAOYSA-M 0.000 claims description 12
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 12
- 229910052700 potassium Inorganic materials 0.000 claims description 12
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 12
- 230000032683 aging Effects 0.000 claims description 11
- 229910052744 lithium Inorganic materials 0.000 claims description 11
- 229910052792 caesium Inorganic materials 0.000 claims description 10
- 229910052791 calcium Inorganic materials 0.000 claims description 10
- 229910052749 magnesium Inorganic materials 0.000 claims description 10
- 229910052701 rubidium Inorganic materials 0.000 claims description 10
- 229910052708 sodium Inorganic materials 0.000 claims description 10
- 239000011734 sodium Substances 0.000 claims description 10
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 9
- 238000011068 loading method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Substances [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 8
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 7
- 229910052783 alkali metal Inorganic materials 0.000 claims description 7
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims description 7
- 150000001340 alkali metals Chemical class 0.000 claims description 7
- 238000000975 co-precipitation Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 6
- 229910002339 La(NO3)3 Inorganic materials 0.000 claims description 6
- 229910002249 LaCl3 Inorganic materials 0.000 claims description 6
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- 229910001626 barium chloride Inorganic materials 0.000 claims description 6
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 claims description 6
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Inorganic materials [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 claims description 6
- NLSCHDZTHVNDCP-UHFFFAOYSA-N caesium nitrate Inorganic materials [Cs+].[O-][N+]([O-])=O NLSCHDZTHVNDCP-UHFFFAOYSA-N 0.000 claims description 6
- FLJPGEWQYJVDPF-UHFFFAOYSA-L caesium sulfate Chemical compound [Cs+].[Cs+].[O-]S([O-])(=O)=O FLJPGEWQYJVDPF-UHFFFAOYSA-L 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 6
- 239000001110 calcium chloride Substances 0.000 claims description 6
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 6
- 239000000470 constituent Substances 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 238000005470 impregnation Methods 0.000 claims description 6
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 6
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(III) nitrate Inorganic materials [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 6
- ICAKDTKJOYSXGC-UHFFFAOYSA-K lanthanum(iii) chloride Chemical compound Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 claims description 6
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 229910001631 strontium chloride Inorganic materials 0.000 claims description 6
- AHBGXTDRMVNFER-UHFFFAOYSA-L strontium dichloride Chemical compound [Cl-].[Cl-].[Sr+2] AHBGXTDRMVNFER-UHFFFAOYSA-L 0.000 claims description 6
- DHEQXMRUPNDRPG-UHFFFAOYSA-N strontium nitrate Inorganic materials [Sr+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O DHEQXMRUPNDRPG-UHFFFAOYSA-N 0.000 claims description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 4
- 238000001802 infusion Methods 0.000 claims description 4
- 238000005342 ion exchange Methods 0.000 claims description 4
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Inorganic materials [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims description 4
- 229910017604 nitric acid Inorganic materials 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 238000000967 suction filtration Methods 0.000 claims description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 3
- 239000007848 Bronsted acid Substances 0.000 claims description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 3
- 229910052684 Cerium Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 3
- 239000000908 ammonium hydroxide Substances 0.000 claims description 3
- 229910052925 anhydrite Inorganic materials 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 3
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 claims description 3
- 229910052796 boron Inorganic materials 0.000 claims description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- 239000003599 detergent Substances 0.000 claims description 3
- 150000004675 formic acid derivatives Chemical class 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 3
- 229910052741 iridium Inorganic materials 0.000 claims description 3
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 3
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910021645 metal ion Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 239000002574 poison Substances 0.000 claims description 3
- 231100000614 poison Toxicity 0.000 claims description 3
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 3
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 3
- 229910052703 rhodium Inorganic materials 0.000 claims description 3
- 229910052707 ruthenium Inorganic materials 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 229910052727 yttrium Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 229910052733 gallium Inorganic materials 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 2
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 2
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 125000004494 ethyl ester group Chemical group 0.000 claims 1
- 239000000047 product Substances 0.000 abstract description 37
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 abstract description 17
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 abstract description 12
- 239000006227 byproduct Substances 0.000 abstract description 10
- 238000004140 cleaning Methods 0.000 abstract description 2
- 239000012043 crude product Substances 0.000 abstract description 2
- 230000002779 inactivation Effects 0.000 abstract description 2
- 238000001577 simple distillation Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract 1
- 229960004424 carbon dioxide Drugs 0.000 description 21
- 230000004044 response Effects 0.000 description 17
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- XMJHPCRAQCTCFT-UHFFFAOYSA-N methyl chloroformate Chemical compound COC(Cl)=O XMJHPCRAQCTCFT-UHFFFAOYSA-N 0.000 description 7
- -1 methyl ethyl Chemical group 0.000 description 7
- 238000004587 chromatography analysis Methods 0.000 description 6
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 6
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 5
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 5
- 229910001960 metal nitrate Inorganic materials 0.000 description 5
- 238000005070 sampling Methods 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 4
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 4
- 239000012018 catalyst precursor Substances 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- RIFGWPKJUGCATF-UHFFFAOYSA-N ethyl chloroformate Chemical compound CCOC(Cl)=O RIFGWPKJUGCATF-UHFFFAOYSA-N 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005809 transesterification reaction Methods 0.000 description 3
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- SIXOAUAWLZKQKX-UHFFFAOYSA-N carbonic acid;prop-1-ene Chemical compound CC=C.OC(O)=O SIXOAUAWLZKQKX-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- OJURWUUOVGOHJZ-UHFFFAOYSA-N methyl 2-[(2-acetyloxyphenyl)methyl-[2-[(2-acetyloxyphenyl)methyl-(2-methoxy-2-oxoethyl)amino]ethyl]amino]acetate Chemical compound C=1C=CC=C(OC(C)=O)C=1CN(CC(=O)OC)CCN(CC(=O)OC)CC1=CC=CC=C1OC(C)=O OJURWUUOVGOHJZ-UHFFFAOYSA-N 0.000 description 2
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 2
- 238000005832 oxidative carbonylation reaction Methods 0.000 description 2
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000010189 synthetic method Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 229930013930 alkaloid Natural products 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- GUNDKLAGHABJDI-UHFFFAOYSA-N dimethyl carbonate;methanol Chemical compound OC.COC(=O)OC GUNDKLAGHABJDI-UHFFFAOYSA-N 0.000 description 1
- 150000005686 dimethyl carbonates Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 125000005909 ethyl alcohol group Chemical group 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000002815 homogeneous catalyst Substances 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C68/00—Preparation of esters of carbonic or haloformic acids
- C07C68/04—Preparation of esters of carbonic or haloformic acids from carbon dioxide or inorganic carbonates
-
- 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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
- B01J29/7049—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing rare earth elements, titanium, zirconium, hafnium, zinc, cadmium, mercury, gallium, indium, thallium, tin or lead
- B01J29/7069—EMT-type, e.g. EMC-2, ECR-30, CSZ-1, ZSM-3 or ZSM-20
-
- 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
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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
- B01J37/08—Heat treatment
- B01J37/082—Decomposition and pyrolysis
- B01J37/088—Decomposition of a metal salt
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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
- B01J37/30—Ion-exchange
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
-
- 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
- B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
- B01J2229/10—After treatment, characterised by the effect to be obtained
- B01J2229/18—After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
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Abstract
By the method for ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol, it is related to the method for Catalysts of Preparing Methyl Ethyl Carbonate, the present invention has the efficient alkaline catalyst of composite pore structural, for ethylene oxide, carbon dioxide, methanol and ethyl alcohol one-step synthesis methyl ethyl carbonate.Containing dimethyl carbonate, methyl ethyl carbonate, diethyl carbonate and ethylene glycol in crude product obtained by the reaction, wherein, methyl ethyl carbonate selectively can reach 70%.By-product dimethyl carbonate and diethyl carbonate can be directly separated as product, also can be recycled, and the reaction was continued generates methyl ethyl carbonate, and by-product ethylene glycol is separated as largeization raw material by simple distillation.Entire reaction process cleaning, efficient, pollution-free, no any waste generation.Work as ethylene oxide：Carbon dioxide：Methanol：Ethyl alcohol molar ratio 1:1:3:2,5 MPa of reaction pressure, 100 DEG C of reaction temperature, 5 h of air speed‑1, catalyst uses 5000h non-inactivations, and stability is preferable.
Description
Technical field
The present invention relates to a kind of method of Catalysts of Preparing Methyl Ethyl Carbonate, more particularly to one kind by ethylene oxide one-step synthesis carbon
The method of sour methyl ethyl ester co-production ethylene glycol.
Background technology
Methyl ethyl carbonate（Methyl Ethyl Carbonate, abbreviation MEC）, molecular formula：C4H8O3, colourless transparent liquid,
1.01 g/mL of density, -55 DEG C of fusing point, 107 DEG C of boiling point is flammable, can be mixed with arbitrary proportion with organic solvent such as alcohol, ketone, ester,
It is a kind of excellent solvent, methyl ethyl carbonate due to having methyl and ethyl simultaneously in its molecular structure, so it has carbonic acid concurrently
The characteristic of dimethyl ester, diethyl carbonate, can be as certain special organic synthesis reagents, while it is also the molten of extraordinary fragrance
Agent.
Since the viscosity of methyl ethyl carbonate is small, dielectric constant is big, strong to the dissolubility of lithium salts, therefore it is a kind of excellent
Lithium ion battery electrolyte solvent can improve the energy density and discharge capacity of battery, can more improve the safety of battery
Energy and service life.
Consulting literatures are it is found that methyl ethyl carbonate is mainly the following synthetic method at present：
（One）Phosgenation
Phosgenation is the process using phosgene and methanol/ethanol as Material synthesis methyl ethyl carbonate, and reaction equation is as follows：
COCl2 + CH3OH→CH3OCOCl...................................................
.......................(1)
CH3OCOCl + C2H5OH→CH3OCOOC2H5.............................................
............(2)
COCl2 +C2H5OH→C2H5OCOCl...................................................
......................(3)
C2H5OCOCl + CH3OH→CH3OCOOC2H5.............................................
............(4)
The method Catalysts of Preparing Methyl Ethyl Carbonate byproduct of reaction is more（Main By product is dimethyl carbonate, diethyl carbonate, chloro-carbonic acid
Methyl esters, ethyl chloroformate）, operating difficulties generates the hydrogen chloride of strong corrosive during simultaneous reactions, it is desirable that equipment has corrosion resistant
Corrosion increases equipment investment.Phosgene has hypertoxicity, and great risk, and the method are caused to the health of operating personnel
Methyl ethyl carbonate yield is relatively low, therefore is gradually eliminated.
（Two）Oxidative carbonylation
Oxidative carbonylation is using carbon monoxide, oxygen, methanol and ethyl alcohol as raw material, in certain temperature and pressure and in catalyst
Under existence condition, Catalysts of Preparing Methyl Ethyl Carbonate, reaction equation is as follows：
CH3OH + C2H5OH + CO + O2→CH3OCOOC2H5 +
H2O..................................(5)
The method major defect is that byproduct of reaction is more（Main By product has dimethyl carbonate, diethyl carbonate, water）, follow-up point
From purification difficult, production cost is increased.
（Three）Ester-interchange method
1st, methylchloroformate and ethyl alcohol ester-interchange method
Edmund PWoo and Ichiro Minami etc. is reported using methylchloroformate and ethyl alcohol as raw material, passes through ester-interchange method
Catalysts of Preparing Methyl Ethyl Carbonate, reaction equation are as follows：
C2H5OH + CH3OCOCl→CH3OCOOC2H5 +
HCl.......................................................(6)
The catalysts are alkali（Such as pyridine, organic amine）, purer methyl ethyl carbonate can be obtained, but shortcoming is to have used poison
Property higher methylchloroformate, simultaneous reactions generate corrosive hydrogen chloride gas, higher to equipment requirement.
2nd, dimethyl carbonate and diethyl carbonate ester-interchange method
Load metal oxide such as SnO of the Shen Zhen lands et al. using load on alumina2/Al2O3、MoO3/Al2O3、TiO2/
Al2O3Deng as catalyst, using dimethyl carbonate and diethyl carbonate as raw material, by Synthesis of Ethyl Methyl Carbonate by Transesterification,
The mass percent of the catalyst metal oxide of preparation is 2%-30%, remaining is aluminium oxide, and the amount of metal oxide accounts for raw material
The 0.1%-10% of total amount, 50-100 DEG C of reaction temperature carry out 2-48 h under normal pressure, and methyl ethyl carbonate yield is 43.6%.The route
The advantages of be that reaction process is simple, non-environmental-pollution, but shortcoming is that the reaction time is long, the catalyst activity reported at this stage compared with
It is low.
3rd, dimethyl carbonate and ethyl alcohol ester-interchange method
Using dimethyl carbonate and ethyl alcohol as raw material, by Synthesis of Ethyl Methyl Carbonate by Transesterification, raw material used in the route is all
It is non-toxic, reaction condition is mild, environmentally safe, therefore has very by the report of this route Catalysts of Preparing Methyl Ethyl Carbonate
More, the reaction equation involved by the route is as follows：
CH3OCOOCH3 + CH3CH2OH→CH3OCOOCH2CH3 + CH3OH...............................(7)
CN1900047 A are using aluminium oxide, activated carbon, molecular sieve as carrier, carrying alkali metal oxide, alkaline-earth metal oxide
One kind of object and rare-earth oxide, although separation problem is not present in catalyst, activity is not so good as homogeneous catalyst.
CN101289395 A are with NaOH, KOH, CH3ONa、CH3The strong alkaloids such as OK are as catalyst, and the catalyst is in reaction solution
Solubility is bad, and easily precipitation, easy fouling.CN103483200 A are using modified molecular sieve as catalyst, wherein modified member
Element is one or more of alkali metal, alkaline-earth metal, Fe, Zn, Ni, Cu, although catalyst preparation process is simple, reacts institute
The temperature needed is high.CN102850223 A, CN102863339 A and CN102850224 A are using the ionic liquid of imidazoles as catalysis
Agent, recoverable, long lifespan, but catalyst recycling is needed by specially treated.US5962720 is with SmL2、Li、CH3OLi
And CaH2Deng for catalyst, but reaction reaches balance needs three days.
At present, mainly using ester-interchange method as mainstream synthetic route in all of above methyl ethyl carbonate synthetic method, but ester is handed over
Changing the oxide spinel dimethyl ester of method need to be synthesized by ethylene carbonate or propene carbonate by methanol transesterification, and carbonic acid second
Enester needs to prepare by ethylene oxide and titanium dioxide reaction again, and propene carbonate needs propylene oxide and carbon dioxide reaction
It prepares, above-mentioned reaction route need to be segmented progress, each elementary reaction object conversion ratio and selectivity of product are low, industrial processes
Energy consumption is big, and operating cost increases.
Invention content
The purpose of the present invention is to provide a kind of sides by ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol
Method, due to ethylene oxide/propylene oxide and carbon dioxide reaction, the ethylene carbonate/propylene carbonate and methanol ester of generation are handed over
Reaction and subsequent dimethyl carbonate is changed to be catalyzed, therefore propose one with the available basic catalyst of ethyl alcohol ester exchange reaction
The response path of kind one-step synthesis method methyl ethyl carbonate.The reaction of the one-step synthesis methyl ethyl carbonate is short with synthesis path, work
The characteristics of skill flow is simple, selectivity of product and high income, catalyst stabilization non-inactivation.
The purpose of the present invention is what is be achieved through the following technical solutions：
By the method for ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol, the method includes following preparation process：
Raw material is respectively ethylene oxide, carbon dioxide, methanol and ethyl alcohol, glycol product and carbonic ester molar ratio 1：1 generation, profit
It can effectively a large amount of coproduction ethylene glycol with the path；
Catalyst is with mesoporous and microcellular structure compound basic catalyst；
It is X/S with mesoporous and microcellular structure compound basic catalyst general formula, wherein X is includes Li, Na, K, Rb, Cs；Be、
Mg、Ca、Sr、Ba；La、Ce、Y、Zr；Cr、W、Mn；Fe、Ru；Co、Rh、Ir；Pd、Pt；Cu、Ag；In Zn, B, Al, Ga it is a kind of or
The oxide of person's multiple element；S be different topology structure carrier, including topological structure for EMT, MOR, MWW, FAU, MFI,
FER, BEA molecular sieve and routine SiO2、Al2O3、ZrO2, one or more of MgO and ZnO carriers oxide；
S molecular sieve carriers, hydrogen type molecular sieve first pass around ion exchange, and Bronsted acid by metal ion is poisoned, makes it
Without Bronsted acidity；Poison molecular sieve ion-exchanger be Li, Na, K, Rb, Cs, Ca, Fe, Mg, Cu hydrochloride,
Sulfate or nitrate.Other molecular sieves and support preparation method are similar, are designated generally as M-S, wherein M include Li, Na, K,
Rb、Cs、Ca、Fe、Mg、Cu；
With mesoporous and microcellular structure carrier loading type alkali metal oxide catalyst, the preparation of Jie's micro porous molecular sieve carrier
Method：
1）Dealuminzation：Certain mass M-S carriers are added separately to the molten stirring of acidity of certain temperature, volume, concentration, using pumping
Filter is washed, dry, obtains the M-S-DAl carriers after dealuminzation；
2）Desiliconization：M-S-DAl carriers made from certain mass process 1 are added to certain temperature, concentration, the alkalinity of certain volume
It stirs in solution, using suction filtration, washs, it is dry, obtain multi-stage porous M-S-DAl-DSi carriers；
3）M-S-DAl-DSi carriers made from process 2 are finally put into Muffle furnace roasting, obtaining carrier indicium is：M-meso-S；
Through continuous fixed bed reaction or continuous Catalysts of Preparing Methyl Ethyl Carbonate.
The method by ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol, gives an account of micro porous molecular sieve
The preparation method of carrier, the molecular sieve of the different topology structure of carrier include EMT, MOR, MWW, FAU, MFI, FER, BEA
It is one or more；The acid solution includes H4EDTA、HCl、HNO3One or more, preferably H4EDTA；Acid solution adds
All molecular sieves will at least be flooded by entering amount, be 10-20 times, preferably 15 times of molecular sieve volume；The alkaline solution includes
NaOH、Na2CO3One or more, preferably NaOH；A concentration of 0.05mol/L-2.0mol/L of alkaline solution；Alkaline solution
Addition at least to flood all molecular sieves, be 5-15 times, preferably 10 times of molecular sieve volume.
The method by ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol, gives an account of micro porous molecular sieve
The preparation method of carrier, the M-meso-S carrier mesoporous pore sizes obtained are distributed as 4-34nm, and specific aperture and alkalinity used are molten
Liquid concentration is related.
The method by ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol, it is described with mesoporous and micro-
The loading type alkali metal oxide catalyst of pore structure carrier, uses coprecipitation method or infusion process：
1）Coprecipitated alkaline solution includes but not limited to the hydroxide of alkali metal and ammonium, such as lithium hydroxide, sodium hydroxide, hydrogen-oxygen
Change potassium and ammonium hydroxide；Carbonate, bicarbonate, formates and the acetate of alkali metal, such as lithium carbonate, sodium carbonate, potassium carbonate
Solution or above-mentioned alkaline solution two or more mixed liquors.Liquid medium used in alkaline substance solution is preferably
Water, but it is also not necessarily limited to water；
2）The addition of alkaline solution will at least flood all carriers, be 10-20 times or more of carrier bulk, and preferably 15
Times, it is 10-14 that solution PH value is controlled when coprecipitated, and preferably PH is 11；Coprecipitation method bath temperature can be -99 DEG C of room temperature, preferably 70
℃；Aging temperature be -80 DEG C of room temperature, ageing time be -20 days 1 hour, preferably 60 DEG C, ageing time 5 days；Catalyst detergent
Medium is preferably water, but is also not necessarily limited to water, liquid medium for 2-10 times of catalyst volume and more than, preferably 2-5 times, wash secondary
Number is depending on efflux pH is washed；Catalyst drying temperature is -150 DEG C of room temperature, and the time is -10 days 1 hour, preferably 120 DEG C, is done
Dry 3-5 days；Calcination temperature be 150-800 DEG C, the time be 1-50 hours, preferably 500-700 DEG C, 30 hours time；Composite holes knot
The content of metal X is the 0.1-50% of vehicle weight in the loaded catalyst general formula of structure；
3）The active constituent presoma of the loaded catalyst of compound pore passage structure is preferably Al (NO3)3、KNO3、CsNO3、Mg
(NO3)2、Ca(NO3)2、Ba(NO3)2、Sr(NO3)2、La(NO3)3、Fe(NO3)3、Mn(NO3)3、AlCl3、KCl、CsCl、MgCl2、
CaCl2、BaCl2、SrCl2、LaCl3、FeCl3、MnCl3、Al2(SO4)3、K2SO4、Cs2SO4、MgSO4、CaSO4、La2(SO4)3、
Fe2(SO4)3、Mn2(SO4)3One or more of mixing；
4）Dipping method co-impregnation, the method that step impregnation can also be used；Drying temperature be room temperature~150 DEG C, the time 1
Hour~20 days；Calcination temperature is 550~650 DEG C, and the time is 1~50 hour；The loaded catalyst general formula of composite pore structural
The content of middle metal X is the 0.1-50% of vehicle weight；
5）In preferred embodiments, the active constituent presoma of the loaded catalyst of compound pore passage structure is preferably Al
(NO3)3、KNO3、CsNO3、Mg(NO3)2、Ca(NO3)2、Ba(NO3)2、Sr(NO3)2、La(NO3)3、Fe(NO3)3、Mn(NO3)3With
AlCl3、KCl、CsCl、MgCl2、CaCl2、BaCl2、SrCl2、LaCl3、FeCl3、MnCl3Middle one or more of mixing.
The method by ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol, the one-step synthesis carbon
Sour methyl ethyl ester path, continuous fixed bed reaction or continuous concrete scheme are：Under normal pressure to 10MPa reaction pressures, ethylene oxide and two
Carbonoxide is with molar ratio 0.1:1-10:1 charging, while beat liquid charging stock methanol with pump and fed with ethyl alcohol, the two molar ratio 1:5-
5:1 reacts Catalysts of Preparing Methyl Ethyl Carbonate in next step in above-mentioned catalyst existence condition, and air speed is 0.1-30 h-1, reaction temperature 50-
Under conditions of 250 DEG C, catalyst amount is the 0.1-3wt% of material quality, and product methyl ethyl carbonate is received selectively not less than 25%
Rate is not less than 20%.
The method by ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol, the fixed bed are continuously anti-
Should, during preparing methyl ethyl carbonate, optimum condition is ethylene oxide：Carbon dioxide：Methanol：Ethyl alcohol molar ratio 1:1:3:
2, air speed 0.5-5 h-1, 78-130 DEG C of reaction temperature.
The method by ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol, the one-step synthesis carbonic acid
Methyl ethyl ester path, still reaction concrete scheme are：Reaction pressure 0.1-10MPa, ethylene oxide and carbon dioxide molar ratio
0.1:1-10:1, both methanol and ethyl alcohol molar ratio 1:5-5:1, under catalyst existence condition reaction prepare methyl ethyl carbonate,
Closed 25-150 DEG C of reaction 0.5-10 h in reaction kettle, catalyst are basic catalyst, and catalyst amount is material quality
0.1-10 wt %。
Advantages of the present invention is with effect：
The present invention is had again by the method for ethylene oxide, carbon dioxide, methanol and ethyl alcohol one-step synthesis methyl ethyl carbonate to be a kind of
Close the efficient alkaline catalyst of pore structure；Synthetic route is short, and a step directly obtains target product.Contain in crude product obtained by the reaction
There are dimethyl carbonate, methyl ethyl carbonate, diethyl carbonate and ethylene glycol, wherein, methyl ethyl carbonate selectively can reach
70%.By-product dimethyl carbonate and diethyl carbonate can be directly separated as product, also can be recycled, generation that the reaction was continued
Methyl ethyl carbonate, by-product ethylene glycol are i.e. separable by simple distillation as largeization raw material.Entire reaction process cleaning,
Efficiently, pollution-free, the by-product of no any low value generates.
Description of the drawings
Fig. 1 is with 15%BaO-5%CaO-3%La2O3/ Cs-meso-EMT turns reactant for catalyst differential responses temperature
The influence of rate and selectivity of product.
Specific embodiment
The following describes the present invention in detail with reference to examples.
The present invention by ethylene oxide, methanol, carbon dioxide and ethyl alcohol one-step synthesis methyl ethyl carbonate response path and should
Catalyst used in response path, the response path are as follows：
The path is former for reaction by ethylene oxide, carbon dioxide, methanol and ethyl alcohol using multi-functional compound basic matterial as catalyst
Expect a step high selectivity methyl ethyl carbonate, basic catalyst is completely insoluble in reaction raw materials and product, and reaction process is not deposited
In any pollutant, glycol product is a kind of bulk chemical, has a vast market application prospect；It is subsidiary in reaction process
The dimethyl carbonate and diethyl carbonate of generation can be directly separated as product, also can be recycled, and the reaction was continued generates carbonic acid
Methyl ethyl ester.Therefore it may be said that being generated almost without any by-product, entire response path green, energy-saving and environmental protection, height in reaction process
Effect.
The present invention protects the multi-functional compound basic catalyst of one-step synthesis methyl ethyl carbonate simultaneously.
Such catalyst is specially the loading type alkali metal oxide catalyst with mesoporous and microcellular structure carrier.It is described
Be X/S with the mesoporous and loading type alkali metal oxide catalyst of microcellular structure carrier its general formula, wherein X be comprising Li, Na,
K、Rb、Cs；Be、Mg、Ca、Sr、Ba；La、Ce、Y、Zr；Cr、W、Mn；Fe、Ru；Co、Rh、Ir；Pd、Pt；Cu、Ag；Zn、B、Al、
The oxide of one or more kinds of elements in Ga；S be different topology structure carrier, including topological structure for EMT, MOR, MWW,
FAU, MFI, FER, BEA molecular sieve and routine SiO2、Al2O3、ZrO2, one or more of carriers such as MgO and ZnO oxygen
Compound.Wherein molecular sieve first passes around ion exchange, and Bronsted acid is poisoned by metal ion, it is made not have Bronsted
It is acid.The EMT molecular sieve carriers poisoned with alkali metal ion（M-EMT, M can be Li, Na, K, Rb, Cs, Ca, Fe, Mg, Cu）For
Example, preparation method are as follows：The H-EMT molecular sieves that 20g is prepared by hydrothermal synthesis method, be placed in 90 DEG C of 90 mL go from
In sub- water, meanwhile, add in the hydrochloride, sulfate or nitric acid of Li, Na, K, Rb, Cs, Ca, Fe, Mg, Cu of 2 M thereto respectively
Salt carries out EMT at 90 DEG C the ion exchange of 2 hours.After exchange, obtained molecular sieve precursor is carried out with deionized water
Washing, until no longer containing ion in eluate.It will wash to filter obtained filter cake and be placed in 120 DEG C of baking ovens and be dried, done
Presoma after dry is put into Muffle furnace and carries out 600 DEG C of 6 h of roasting, and Li-EMT, Na-EMT, K-EMT, Rb- are can obtain after roasting
EMT, Ca-EMT, Fe-EMT, Mg-EMT, Cu-EMT and Cs-EMT.Other molecular sieves and support preparation method are similar, unified to mark
For M-S, wherein M is including Li, Na, K, Rb, Cs, Ca, Fe, Mg, Cu etc..
1. the preparation method of Jie's micro porous molecular sieve carrier：
The present invention is handled by carrying out orderly soda acid to different carriers, and final high temperature roasting is made compound with mesoporous and micropore
The molecular sieve carrier of pore structure.Sour processing intent is the Al removed in framework of molecular sieve, so as to fulfill pore-creating, alkali process it is main
The Si that effect is to remove in framework of molecular sieve makes molecular sieve form meso-hole structure, and preparation process includes the following steps：
1）Dealuminzation：Certain mass M-S carriers are added separately in the acid solution of certain volume, a concentration of 0.11 mol/L,
Then in oil bath 100 DEG C be stirred at reflux 6 h, using suction filtration, washing, 120 DEG C of dry 8h obtain the M-S-DAl after dealuminzation and carry
Body.
2）Desiliconization：M-S-DAl carriers made from certain mass process 1 are added to the alkalinity of a certain concentration, certain volume
In solution, then 65 DEG C of 30 min of water bath processing, using suction filtration, are washed, 120 DEG C of dry 8h obtain multi-stage porous M-S-DAl-
DSi carriers.
3）Finally M-S-DAl-DSi carriers made from process 2 are put into Muffle furnace, 550 DEG C of guarantors are warming up to 1 DEG C/min
6h is held, obtaining carrier indicium is：M-meso-S.
The molecular sieve of heretofore described different topology structure includes one kind of EMT, MOR, MWW, FAU, MFI, FER, BEA
It is or a variety of；The acid solution includes H4EDTA、HCl、HNO3Deng one or more, preferably H4EDTA；The addition of acid solution
Amount will at least flood all molecular sieves, can be 10-20 times, preferably 15 times of molecular sieve volume；The alkaline solution includes
NaOH、Na2CO3Deng one or more, preferably NaOH；A concentration of 0.05mol/L-2.0mol/L of alkaline solution；Alkalinity is molten
The addition of liquid will at least flood all molecular sieves, can be 5-15 times, preferably 10 times of molecular sieve volume.
The M-meso-S carrier mesoporous pore sizes obtained in the present invention are distributed as 4-34nm, specific aperture and alkaline solution used
Concentration is related.
2. the preparation method of composite catalyst：
The preparation of the loaded catalyst X/M-meso-S with composite pore structural uses coprecipitation method or infusion process in the present invention,
Include the following steps：
2.1 wherein coprecipitation methods include：
1）The carrier with composite pore structural being prepared is put into Muffle furnace 500 DEG C of roastings 4 hours to remove M-meso-
The water adsorbed in S；
2）X metal nitrates, chlorate and the sulfate of M-meso-S mass 0.1-50% is taken, is dissolved in the deionization of certain volume
In water, the mixed solution of certain density X metal nitrates, chlorate and sulfate is made into, it is molten to prepare certain density alkalinity
The M-meso-S carriers for the certain mass being prepared with the deionized water of 10-20 times of volume are mixed, stirred evenly by liquid, and
Afterwards under certain bath temperature and intense agitation, X metal nitrates, chlorate, sulfuric acid is added dropwise simultaneously into mixed liquor
The mixed solution and alkaline solution of salt, control solution pH value during being added dropwise.
3）After the mixed solution of X metal nitrates, chlorate and sulfate is added dropwise, will be coprecipitated after suspension continue
Stir certain time, then aging at room temperature.
4）The solution that aging is finished filters, and the precipitation then washed with the deionized water of certain volume is until washing
Liquid PH is 7.
5）Washing dry certain time at 110-120 DEG C to the catalyst precursor after neutrality.
6）Dried catalyst precursor in Muffle furnace at 550-650 DEG C is roasted to 3-5 h, obtains having compound
The loaded catalyst X/M-meso-S of pore structure.
Coprecipitated alkaline solution of the present invention includes but not limited to the hydroxide of alkali metal and ammonium, such as hydroxide
Lithium, sodium hydroxide, potassium hydroxide and ammonium hydroxide etc.；Carbonate, bicarbonate, formates and the acetate of alkali metal, such as carbon
Two or more mixed liquors of the solution of sour lithium, sodium carbonate, potassium carbonate etc. or above-mentioned alkaline solution.Alkaline substance solution
Liquid medium used is preferably water, but is also not necessarily limited to water.The addition of alkaline solution will at least flood all carriers, can be
10-20 times or more of carrier bulk, preferably 15 times, it is 10-14 that solution PH value is controlled when coprecipitated, and preferably PH is 11.
Above-mentioned coprecipitation method bath temperature can be -99 DEG C of room temperature, preferably 70 DEG C；Aging temperature can be -80 DEG C of room temperature, aging
Time can be -20 days 1 hour, preferably 60 DEG C, ageing time 5 days；Catalyst detergent medium is preferably water, but is also not necessarily limited to water,
Liquid medium can be 2-10 times of catalyst volume and more than, preferably 2-5 times, washing times are depending on efflux pH is washed.
Catalyst drying temperature can be -150 DEG C of room temperature, and the time can be -10 days 1 hour, preferably 120 DEG C, 3-5 days dry；
Calcination temperature can be 150-800 DEG C, the time can be 1-50 hours, preferably 500-700 DEG C, 30 hours time.
The content of metal X is the 0.1-50% of vehicle weight in the loaded catalyst general formula of composite pore structural in the present invention.
The active constituent presoma of the loaded catalyst of compound pore passage structure is preferably Al (NO in the present invention3)3、KNO3、
CsNO3、Mg(NO3)2、Ca(NO3)2、Ba(NO3)2、Sr(NO3)2、La(NO3)3、Fe(NO3)3、Mn(NO3)3、AlCl3、KCl、
CsCl、MgCl2、CaCl2、BaCl2、SrCl2、LaCl3、FeCl3、MnCl3、Al2(SO4)3、K2SO4、Cs2SO4、MgSO4、CaSO4、
La2(SO4)3、Fe2(SO4)3、Mn2(SO4)3One or more of mixing.
2.2 infusion processes include：
1）The M-meso-S carriers with composite pore structural being prepared are put into Muffle furnace first and are roasted 4 hours for 500 DEG C,
Remove the water adsorbed in M-meso-S.
2）Metal X mass is taken as the X metal nitrates of M-meso-S mass 0.1-50% and the mixed solution of chlorate,
It is impregnated into several times in ultrasound environments in the M-meso-S carriers duct after roasting；
3）Catalyst precursor after dipping 110 DEG C of dryings 10 hours in an oven.
4）Dried catalyst precursor is roasted into 3h for 550 DEG C in Muffle furnace, obtains that there is urging for composite pore structural
Agent X/M-meso-S.
Dipping method described in the present invention can use co-impregnation, the method that can also use step impregnation；Drying temperature can
For room temperature~150 DEG C, the time can be 1 hour~20 days；Calcination temperature can be 550~650 DEG C, and the time can be 1~50 hour.
The content of metal X is the 0.1-50% of vehicle weight in the loaded catalyst general formula of composite pore structural.
In preferred embodiments, the active constituent presoma of the loaded catalyst of compound pore passage structure is preferably Al
(NO3)3、KNO3、CsNO3、Mg(NO3)2、Ca(NO3)2、Ba(NO3)2、Sr(NO3)2、La(NO3)3、Fe(NO3)3、Mn(NO3)3With
AlCl3、KCl、CsCl、MgCl2、CaCl2、BaCl2、SrCl2、LaCl3、FeCl3、MnCl3Middle one or more of mixing.
The present invention is using ethylene oxide, carbon dioxide, methanol and ethyl alcohol as raw material, in the catalyst existence condition of above-mentioned preparation
Next step Catalysts of Preparing Methyl Ethyl Carbonate, reactive mode are two kinds of continuous fixed bed reaction or continuous and slurry bed system still reaction.
Continuous fixed bed reaction or continuous specific embodiment of the present invention is：Under normal pressure to 10MPa reaction pressures, ethylene oxide with
Carbon dioxide is with molar ratio 0.1:1-10:1 charging, while beat liquid charging stock methanol with pump and fed with ethyl alcohol, the two molar ratio 1:
5-5:1 reacts Catalysts of Preparing Methyl Ethyl Carbonate in next step in above-mentioned catalyst existence condition, and air speed is 0.1-100 h-1, reaction temperature
Under conditions of 50-250 DEG C, catalyst is the various multi-functional compound base catalysts protected in the present invention, and catalyst amount is original
Expect the 0.1-3wt% of quality, for product methyl ethyl carbonate selectively not less than 65%, yield is not less than 60%.
During methyl ethyl carbonate is prepared with fixed bed reaction, optimum condition is ethylene oxide：Carbon dioxide：First
Alcohol：Ethyl alcohol molar ratio 1:1:3:2, air speed 0.5-5 h-1, 78-130 DEG C of reaction temperature.
Still reaction specific embodiment of the present invention is：Reaction pressure 0.1-10MPa, ethylene oxide and carbon dioxide mole
Than 0.1:1-10:1, both methanol and ethyl alcohol molar ratio 1:5-5:1, under catalyst existence condition reaction prepare methyl ethyl carbonate
Ester, closed 25-150 DEG C of reaction 0.5-10 h in reaction kettle, catalyst are the various basic catalysts protected in the present invention, catalysis
Agent dosage is the 0.1-10 wt % of material quality.
During methyl ethyl carbonate is prepared with still reaction, optimization ethylene oxide：Carbon dioxide：Methanol：Ethyl alcohol rubs
That ratio 1:1:3:2,90-140 DEG C of reaction temperature.
The catalyst that the present invention is protected is multi-functional compound basic catalyst, it is advantageous that mesoporous significantly improve mass transfer
Effect, and micropore significantly improves carrier specific surface area, improves the dispersion degree in activated centre.In continuous fixed bed reaction or continuous, catalysis
Non-inactivation is reacted in agent for a long time, even if feed space velocity is 100h-1When, product methyl ethyl carbonate remains to keep higher yield, urges
Agent is prepared simply, and environmentally safe, energy conservation and environmental protection.In still reaction, post catalyst reaction is by simple processing
Can reuse again, and catalyst be reused many times after remain to keep higher activity.
Embodiment
Embodiment 1
In 50L paste state bed reactor kettles, reaction pressure 10MPa, reaction raw materials ethylene oxide：Carbon dioxide：Methanol：Ethyl alcohol=
1:1:3:2, each 1.2kg of basic catalyst that above-mentioned preparation method obtains is put into respectively, and reaction solution total volume is 40 L.Machinery stirs
Reaction is mixed, 100 DEG C of reaction temperature reacts sampling progress chromatography calculating after 10h, feed stock conversion, selectivity of product such as table 1
It is shown.
Influence of the 1 variety classes catalyst of table to feed stock conversion, selectivity of product
Under all reaction conditions, ethylene oxide and carbon dioxide conversion are essentially identical, therefore, do not list additionally in the table
Ethylene oxide conversion ratio, CO2Conversion ratio represents CO simultaneously2With ethylene oxide conversion ratio, selectivity of product is with CO2On the basis of calculate.
Except having ethylene carbonate in upper table（EC）, dimethyl carbonate（DMC）, methyl ethyl carbonate（EMC）And diethyl carbonate（DEC）Generation
Outside, a large amount of ethylene glycol generate, since ethylene glycol is from ethylene oxide, if calculating selectivity of product, second from ethylene oxide
The selectivity of glycol is approximately 100% under all reaction conditions.Other specific examples use same data expression method.
As can be seen from Table 1, if only using molecular sieve carrier as catalyst, reaction result is very poor, and reaction hardly occurs.When alkali is golden
Belonging to oxide carried when on molecular sieve carrier, catalyst effect has very big promotion, when containing Cs elements particularly in catalyst,
The catalytic effect of reaction is best.With 15%BaO-5%CaO-3%La2O3/ Cs-meso-EMT is catalyst, and reaction-ure conversion-age approaches
90%, EMC molar selectivities are up to 28% in product.
Embodiment 2
In fixed bed reactors, influence of the differential responses pressure to feed stock conversion and selectivity of product is probed into.In fixed bed
Middle loading 15%BaO-5%CaO-3%La2O350 g of/Cs-meso-EMT catalyst, ethylene oxide and carbon dioxide molar ratio 1：1,
Using constant flow pump by methanol and ethyl alcohol according to molar ratio 3:2 ratio is pumped into reactor, and air speed is 5 h-1, reaction pressure is such as
Shown in table, 100 DEG C of reaction temperature, and stablize 500 h, and sampling progress chromatography calculating after stablizing, feed stock conversion, product choosing
Selecting property is as shown in table 2.
Influence of the 2 differential responses pressure of table to feed stock conversion, selectivity of product
As can be seen from Table 2, with 15%BaO-5%CaO-3%La2O3When/Cs-meso-EMT is catalyst, with reaction pressure
Raising reaction-ure conversion-age and selectivity of product all increase.When reaction pressure reach 5MPa and more than when, reactant conversion
Rate and EMC selectivity of product nearly all reach maximum value, it is seen that 5MPa is the optimal reaction pressure of the reaction.
Embodiment 3
In fixed bed reactors, influence of the differential responses temperature to feed stock conversion and selectivity of product is probed into.In fixed bed
Middle loading 15%BaO-5%CaO-3%La2O350 g of/Cs-meso-EMT catalyst, ethylene oxide and carbon dioxide molar ratio 1：1,
Using constant flow pump by methanol and ethyl alcohol according to molar ratio 3:2 ratio is pumped into reactor, and air speed is 5 h-1, reaction pressure
5Mpa, it is as shown in the table for reaction temperature, and stablizes 500 h, sampling progress chromatography calculating, feed stock conversion, product after stablizing
Selectivity is as shown in table 3.
Influence of the 3 differential responses temperature of table to feed stock conversion, selectivity of product
From table 3 it can be seen that the raising reaction-ure conversion-age and EMC with reaction temperature selectively increase, but work as temperature
After 100 DEG C, continue to increase temperature, reaction-ure conversion-age and selectivity of product are almost unchanged, therefore the temperature of the reaction
Suitable for control near 100 DEG C.
Embodiment 4
In fixed bed reactors, influence of the differential responses object molar ratio to feed stock conversion and selectivity of product is probed into.Solid
15%BaO-5%CaO-3%La is packed into fixed bed2O350 g of/Cs-meso-EMT catalyst, ethylene oxide and carbon dioxide molar ratio
1：1, methanol and ethyl alcohol are pumped into according to different mol ratio in reactor using constant flow pump, air speed is 5 h-1, methanol and ethyl alcohol
It is as shown in the table for specific reaction molar ratio, reaction pressure 5MPa, 100 DEG C of reaction temperature, and stablizes 500 h, samples and carries out after stablizing
Chromatography calculates, and feed stock conversion, selectivity of product are as shown in table 4.
The different methanol of table 4 and influence of the ethyl alcohol molar ratio to feed stock conversion, selectivity of product
From table 4, it can be seen that methanol and ethyl alcohol molar ratio are very big on reaction result influence, when methanol and ethyl alcohol low mole prop0rtion,
Methyl ethyl carbonate and diethyl carbonate selectivity are higher, the reason is that the dimethyl carbonate of more ethyl alcohol substitution generations.Work as on the contrary
When methanol is with ethyl alcohol high molar ratio, dimethyl carbonate selectivity is higher, the reason is that ethylene carbonate replaces generation by a large amount of methanol
Dimethyl carbonate, and the amount of ethyl alcohol is less, dimethyl carbonate cannot further be replaced by ethyl alcohol, therefore a large amount of dimethyl carbonates
It is remaining.It can be seen that from upper table, when methanol and ethyl alcohol molar ratio are 3:When 2, methanol is opposite with the conversion ratio of ethyl alcohol higher, former
Expect that utilization rate is high.Therefore, the optimum response molar ratio of methanol and ethyl alcohol is 3:2.
Embodiment 5
In fixed bed reactors, influence of the differential responses air speed to feed stock conversion and selectivity of product is probed into.In fixed bed
Middle loading 15%BaO-5%CaO-3%La2O350 g of/Cs-meso-EMT catalyst, ethylene oxide and carbon dioxide molar ratio 1：1,
Using constant flow pump by methanol and ethyl alcohol according to 3:2 molar ratios are pumped into reactor, and it is as shown in the table for differential responses air speed, reaction pressure
Power 5MPa, 100 DEG C of reaction temperature, and stablize 500 h, and sampling progress chromatography calculating after stablizing, feed stock conversion, product choosing
Selecting property is as shown in table 5.
Influence of the 5 differential responses air speed of table to feed stock conversion, selectivity of product
As can be seen from Table 5, as the increase reaction-ure conversion-age and methyl ethyl carbonate of air speed selectivity are constant at the beginning, work as sky
Speed is more than 5h-1When, the two declines apparent.The reason is that since air speed is excessive, reaction raw materials have little time to react.Therefore air speed 5h-1For
Optimum response air speed.
Embodiment 6
In fixed bed reactors, influence of the differential responses duration to feed stock conversion and selectivity of product is probed into, investigates catalysis
The stability of agent.15%BaO-5%CaO-3%La is packed into fixed bed2O350 g of/Cs-meso-EMT catalyst, ethylene oxide with
Carbon dioxide molar ratio 1：1, using constant flow pump by methanol and ethyl alcohol according to 3:2 molar ratios are pumped into reactor, air speed 5
h-1, reaction pressure 5MPa, 100 DEG C of reaction temperature, and stablize in table the reaction time respectively, sampling progress chromatography meter after stablizing
It calculates, feed stock conversion, selectivity of product are as shown in table 6.
Influence of the reaction experience duration of table 6 to feed stock conversion, selectivity of product
As can be seen from Table 6,5000 h feed stock conversions of reaction experience, product methyl ethyl carbonate are selectively basically unchanged, and are catalyzed
Agent does not inactivate substantially, and catalyst has fabulous stability.
The above is only several embodiments of the application, any type of limitation is not done to the application, although this Shen
Please disclosed as above with preferred embodiment, however not to limit the application, any person skilled in the art is not taking off
In the range of technical scheme, make a little variation using the technology contents of the disclosure above or modification is equal to
Case study on implementation is imitated, is belonged in the range of technical solution.
Claims (7)
1. by the method for ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol, which is characterized in that the method includes
Following preparation process：
Raw material is respectively ethylene oxide, carbon dioxide, methanol and ethyl alcohol, glycol product and carbonic ester molar ratio 1：1 generation, profit
It can effectively a large amount of coproduction ethylene glycol with the path；
Catalyst is with mesoporous and microcellular structure compound basic catalyst；
It is X/S with mesoporous and microcellular structure compound basic catalyst general formula, wherein X is includes Li, Na, K, Rb, Cs；Be、
Mg、Ca、Sr、Ba；La、Ce、Y、Zr；Cr、W、Mn；Fe、Ru；Co、Rh、Ir；Pd、Pt；Cu、Ag；In Zn, B, Al, Ga it is a kind of or
The oxide of person's multiple element；S be different topology structure carrier, including topological structure for EMT, MOR, MWW, FAU, MFI,
FER, BEA molecular sieve and routine SiO2、Al2O3、ZrO2, one or more of MgO and ZnO carriers oxide；
S molecular sieve carriers, hydrogen type molecular sieve first pass around ion exchange, and Bronsted acid by metal ion is poisoned, makes it
Without Bronsted acidity；Poison molecular sieve ion-exchanger be Li, Na, K, Rb, Cs, Ca, Fe, Mg, Cu hydrochloride,
Sulfate or nitrate；
Other molecular sieves and support preparation method are similar, are designated generally as M-S, wherein M include Li, Na, K, Rb, Cs, Ca, Fe,
Mg、Cu；
With mesoporous and microcellular structure carrier loading type alkali metal oxide catalyst, the preparation of Jie's micro porous molecular sieve carrier
Method：
1）Dealuminzation：Certain mass M-S carriers are added separately to the molten stirring of acidity of certain temperature, volume, concentration, using pumping
Filter is washed, dry, obtains the M-S-DAl carriers after dealuminzation；
2）Desiliconization：M-S-DAl carriers made from certain mass process 1 are added to certain temperature, concentration, the alkalinity of certain volume
It stirs in solution, using suction filtration, washs, it is dry, obtain multi-stage porous M-S-DAl-DSi carriers；
3）M-S-DAl-DSi carriers made from process 2 are finally put into Muffle furnace roasting, obtaining carrier indicium is：M-meso-S；
Through continuous fixed bed reaction or continuous Catalysts of Preparing Methyl Ethyl Carbonate.
2. the method according to claim 1 by ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol, special
Sign is, gives an account of the preparation method of micro porous molecular sieve carrier, the molecular sieve of the different topology structure of carrier include EMT,
MOR, MWW, FAU, MFI, FER, BEA's is one or more；The acid solution includes H4EDTA、HCl、HNO3One kind or more
Kind, preferably H4EDTA；The addition of acid solution will at least flood all molecular sieves, be 10-20 times of molecular sieve volume, most
It is 15 times well；The alkaline solution includes NaOH, Na2CO3One or more, preferably NaOH；The alkaline solution is a concentration of
0.05mol/L-2.0mol/L；The addition of alkaline solution will at least flood all molecular sieves, be the 5-15 of molecular sieve volume
Times, preferably 10 times.
3. the method according to claim 1 by ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol, special
Sign is, gives an account of the preparation method of micro porous molecular sieve carrier, and the M-meso-S carrier mesoporous pore sizes obtained are distributed as 4-
34nm, specific aperture are related with alkaline solution concentration used.
4. the method according to claim 1 by ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol, special
Sign is, described with mesoporous and microcellular structure carrier loading type alkali metal oxide catalyst, use coprecipitation method or
Infusion process：
1）Coprecipitated alkaline solution includes but not limited to the hydroxide of alkali metal and ammonium, such as lithium hydroxide, sodium hydroxide, hydrogen-oxygen
Change potassium and ammonium hydroxide；Carbonate, bicarbonate, formates and the acetate of alkali metal, such as lithium carbonate, sodium carbonate, potassium carbonate
Solution or above-mentioned alkaline solution two or more mixed liquors；
Liquid medium used in alkaline substance solution is preferably water, but is also not necessarily limited to water；
2）The addition of alkaline solution will at least flood all carriers, be 10-20 times or more of carrier bulk, and preferably 15
Times, it is 10-14 that solution PH value is controlled when coprecipitated, and preferably PH is 11；Coprecipitation method bath temperature can be -99 DEG C of room temperature, preferably 70
℃；Aging temperature be -80 DEG C of room temperature, ageing time be -20 days 1 hour, preferably 60 DEG C, ageing time 5 days；Catalyst detergent
Medium is preferably water, but is also not necessarily limited to water, liquid medium for 2-10 times of catalyst volume and more than, preferably 2-5 times, wash secondary
Number is depending on efflux pH is washed；Catalyst drying temperature is -150 DEG C of room temperature, and the time is -10 days 1 hour, preferably 120 DEG C, is done
Dry 3-5 days；Calcination temperature be 150-800 DEG C, the time be 1-50 hours, preferably 500-700 DEG C, 30 hours time；Composite holes knot
The content of metal X is the 0.1-50% of vehicle weight in the loaded catalyst general formula of structure；
3）The active constituent presoma of the loaded catalyst of compound pore passage structure is preferably Al (NO3)3、KNO3、CsNO3、Mg
(NO3)2、Ca(NO3)2、Ba(NO3)2、Sr(NO3)2、La(NO3)3、Fe(NO3)3、Mn(NO3)3、AlCl3、KCl、CsCl、MgCl2、
CaCl2、BaCl2、SrCl2、LaCl3、FeCl3、MnCl3、Al2(SO4)3、K2SO4、Cs2SO4、MgSO4、CaSO4、La2(SO4)3、
Fe2(SO4)3、Mn2(SO4)3One or more of mixing；
4）Dipping method co-impregnation, the method that step impregnation can also be used；Drying temperature be room temperature~150 DEG C, the time 1
Hour~20 days；Calcination temperature is 550~650 DEG C, and the time is 1~50 hour；The loaded catalyst general formula of composite pore structural
The content of middle metal X is the 0.1-50% of vehicle weight；
5）In preferred embodiments, the active constituent presoma of the loaded catalyst of compound pore passage structure is preferably Al
(NO3)3、KNO3、CsNO3、Mg(NO3)2、Ca(NO3)2、Ba(NO3)2、Sr(NO3)2、La(NO3)3、Fe(NO3)3、Mn(NO3)3With
AlCl3、KCl、CsCl、MgCl2、CaCl2、BaCl2、SrCl2、LaCl3、FeCl3、MnCl3Middle one or more of mixing.
5. the method according to claim 1 by ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol, special
Sign is, the one-step synthesis methyl ethyl carbonate path, and continuous fixed bed reaction or continuous concrete scheme is：It is anti-to 10MPa in normal pressure
It answers under pressure, ethylene oxide is with carbon dioxide with molar ratio 0.1:1-10:1 charging, while beat liquid charging stock methanol and second with pump
Alcohol is fed, the two molar ratio 1:5-5:1 reacts Catalysts of Preparing Methyl Ethyl Carbonate in next step in above-mentioned catalyst existence condition, and air speed is
0.1-30 h-1, under conditions of 50-250 DEG C of reaction temperature, catalyst amount is the 0.1-3wt% of material quality, product carbonic acid first
For ethyl ester selectively not less than 25%, yield is not less than 20%.
6. the method according to claim 5 by ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol, special
Sign is that the continuous fixed bed reaction or continuous, during preparing methyl ethyl carbonate, optimum condition is ethylene oxide：Titanium dioxide
Carbon：Methanol：Ethyl alcohol molar ratio 1:1:3:2, air speed 0.5-5 h-1, 78-130 DEG C of reaction temperature.
7. the method according to claim 6 by ethylene oxide one-step synthesis methyl ethyl carbonate co-production ethylene glycol, special
Sign is, the one-step synthesis methyl ethyl carbonate path, and still reaction concrete scheme is：Reaction pressure 0.1-10MPa, epoxy
Ethane and carbon dioxide molar ratio 0.1:1-10:1, both methanol and ethyl alcohol molar ratio 1:5-5:1, under catalyst existence condition
Reaction prepares methyl ethyl carbonate, closed 25-150 DEG C of reaction 0.5-10 h in reaction kettle, and catalyst is basic catalyst, catalyst
Dosage is the 0.1-10 wt % of material quality.
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Application publication date: 20180622 |