BRPI0804255A2 - catalyst - Google Patents
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- BRPI0804255A2 BRPI0804255A2 BRPI0804255A BRPI0804255A2 BR PI0804255 A2 BRPI0804255 A2 BR PI0804255A2 BR PI0804255 A BRPI0804255 A BR PI0804255A BR PI0804255 A2 BRPI0804255 A2 BR PI0804255A2
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- catalyst
- support
- catalytically active
- palladium
- gold
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- 239000003054 catalyst Substances 0.000 title claims abstract description 42
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 14
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052737 gold Inorganic materials 0.000 claims abstract description 13
- 239000010931 gold Substances 0.000 claims abstract description 13
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical group CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 7
- -1 alkali metal acetate Chemical class 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 3
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 3
- 239000010936 titanium Substances 0.000 claims abstract description 3
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 3
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 3
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 229910000476 molybdenum oxide Inorganic materials 0.000 abstract description 3
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical class [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 12
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 8
- 235000012239 silicon dioxide Nutrition 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 239000000377 silicon dioxide Substances 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 235000011056 potassium acetate Nutrition 0.000 description 6
- 239000012071 phase Substances 0.000 description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 4
- 150000001339 alkali metal compounds Chemical class 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910000510 noble metal Inorganic materials 0.000 description 4
- 239000004408 titanium dioxide Substances 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 229910000323 aluminium silicate Inorganic materials 0.000 description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000012018 catalyst precursor Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 159000000011 group IA salts Chemical class 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 150000003112 potassium compounds Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
CATALISADOR. A presente invenção refere-se a um catalisador que compreende paládio, ouro e acetato de metal alcalino como componente cataliticamente ativo sobre um suporte, que é modificado por meio de titânio, ferro, lantânio, cério, itrio e/ou molibdênio, ou áxidos dos mesmos. Ele pode ser usado para preparar monómero acetato de vinila.CATALYST. The present invention relates to a catalyst comprising palladium, gold and alkali metal acetate as a catalytically active component on a support which is modified by means of titanium, iron, lanthanum, cerium, yttrium and / or molybdenum oxides. same. It can be used to prepare vinyl acetate monomer.
Description
Relatório Descritivo da Patente de Invenção para "CATALISADOR".Patent Descriptive Report for "CATALYST".
A presente invenção refere-se a um catalisador, um processopara produzi-lo e seu uso para preparar monômeros acetato de vinila.The present invention relates to a catalyst, a process for producing it and its use to prepare vinyl acetate monomers.
Os catalisadores sobre suporte que contêm ouro, paládio ecompostos de metais alcalinos são usados para a produção de acetato devinila. Com este propósito, eteno, ácido acético e oxigênio molecular ou arsão reagidos na fase gasosa, com ou sem a adição de gases inertes, emtemperaturas na faixa entre 100 e 250 °C e sob pressão ambiente ou pres-são acima da pressão atmosférica, na presença do catalisador sobre suporte.Support catalysts containing gold, palladium and alkali metal compounds are used for the production of devinyl acetate. For this purpose, ethylene, acetic acid and molecular oxygen or ars are reacted in the gas phase with or without the addition of inert gases at temperatures in the range 100 to 250 ° C and under ambient pressure or pressure above atmospheric pressure at presence of catalyst on support.
Os processos para preparar monômero acetato de vinila sãoconhecidos através dos documentos n- DE 16 68 088, EP-A 0 464 633,EP-A-0 519 435, EP-A 0 634 208, EP-A 0 723 810, EP-A 0 634 209,EP-A 0 632 214, EP-A 0 654 301, EP-A 0 723 810, US 4,048,096,US 5,185,308 e US 5,371,277. Estes documentos descrevem também pro-cessos para produzir catalisadores sobre suporte. Dependendo da modali-dade, são produzidos catalisadores sobre suporte que têm uma distribuiçãohomogênea de metal nobre sobre a seção transversal do suporte, e catali-sadores que têm perfil de casca mais ou menos pronunciado.Processes for preparing vinyl acetate monomer are known from DE 16 68 088, EP-A 0 464 633, EP-A-0 519 435, EP-A 0 634 208, EP-A 0 723 810, EP-A A 0 634 209, EP-A 0 632 214, EP-A 0 654 301, EP-A 0 723 810, US 4,048,096, US 5,185,308 and US 5,371,277. These documents also describe processes for producing supported catalysts. Depending on the modality, support catalysts are produced which have a homogeneous distribution of noble metal over the support cross section, and catalysts which have a more or less pronounced bark profile.
Os documentos n25 DE-B 21 00 778, US 4,902,823,US 5,250,487, US 5,292,931, US 5,808,136, EP 0 807 615, EP 0 916 402,EP 0 997 192 A1, EP 1 323 469 A2 e EP 0 987 058 descrevem o uso decorpos modelados baseados em dióxidos de silício pirogênicos como supor-tes de catalisadores na preparação do monômero acetato de vinila.DE-B 21 00 778, US 4,902,823, US 5,250,487, US 5,292,931, US 5,808,136, EP 0 807 615, EP 0 916 402, EP 0 997 192 A1, EP 1 323 469 A2 and EP 0 987 058 describe the I use modeled bodies based on pyrogenic silicon dioxides as catalyst supports in the preparation of the vinyl acetate monomer.
O documento n2 EP-A 0 464 633 descreve um catalisador sobresuporte para preparar monômero acetato de vinila, que é baseado em umsuporte de catalisador que tem pelo menos um canal através do qual o fluidopode passar. Particularmente, faz-se referência a um cilindro oco no qualpelo menos 95% do paládio, ouro e/ou seus compostos ficam localizados emuma região a partir da superfície até 0,5 mm abaixo da superfície do suporte.EP-A 0 464 633 discloses an oversupport catalyst for preparing vinyl acetate monomer which is based on a catalyst support having at least one channel through which the fluid can pass. In particular, reference is made to a hollow cylinder in which at least 95% of palladium, gold and / or its compounds are located in a region from the surface up to 0.5 mm below the surface of the support.
Estes textos de patentes descrevem um processo para produziro catalisador sobre suporte que contém ouro, paládio e compostos de metaisalcalinos. Dependendo da modalidade, são obtidos catalisadores que têmuma distribuição homogênea de metal nobre sobre a seção transversal dosuporte, e catalisadores que têm um perfil de casca mais ou menos pronun-ciado.These patent texts describe a process for producing support catalysts containing gold, palladium and alkali metal compounds. Depending on the embodiment, catalysts having a homogeneous distribution of noble metal over the support cross-section are obtained, and catalysts having a more or less pronounced bark profile.
Estes catalisadores são obtidos usualmente impregnando o su-porte com uma solução básica e uma solução que contém sais de ouro epaládio, sendo que as impregnações ocorrem simultaneamente ou sucessi-vamente, com ou sem secagem intermediária. O suporte é subseqüente-mente lavado para remover qualquer cloreto presente. Antes ou depois dalavagem, os compostos de metais nobres insolúveis precipitados sobre osuporte são reduzidos. O precursor de catalisador obtido desta maneira ésecado e impregnado com acetatos de metais alcalinos ou compostos demetais alcalinos que são convertidos completa ou parcialmente em acetatosde metais alcalinos sob as condições da reação na produção do monômeroacetato de vinila, pára ativar o catalisador. Os compostos de metais alcalinospreferidos são compostos de potássio, particularmente acetato de potássio.These catalysts are usually obtained by impregnating the support with a basic solution and a solution containing gold and alkaline salts, the impregnations occurring simultaneously or successively, with or without intermediate drying. The support is subsequently washed to remove any chloride present. Before or after washing, the insoluble noble metal compounds precipitated on the support are reduced. The catalyst precursor obtained in this manner is dried and impregnated with alkali metal acetates or alkali metal compounds which are completely or partially converted to alkali metal acetates under the reaction conditions in the production of vinyl monomeracetate to activate the catalyst. Preferred alkali metal compounds are potassium compounds, particularly potassium acetate.
A redução do catalisador pode ser conduzida na fase aquosa ouna fase gasosa. Para conduzir a redução na fase aquosa, os agentes reduto-res apropriados são, por exemplo, formaldeído ou hidrazina. A redução nafase gasosa pode ser efetuada usando hidrogênio ou uma mistura de hidro-gênio/nitrogênio (95% em volume de N2 + 5% em peso de H2) ou eteno. Deacordo com o documento ns EP 0 634 209, a redução é conduzida usandohidrogênio em temperaturas na faixa entre 40 e 260 °C, de preferência entre70 e 200 °C. Entretanto, o catalisador é freqüentemente reduzido por meiode eteno diretamente no reator de produção apenas depois da ativação pormeio de acetato de metal alcalino.Catalyst reduction can be conducted in the aqueous phase or in the gas phase. To conduct the reduction in the aqueous phase, suitable reducing agents are, for example, formaldehyde or hydrazine. Gas phase reduction can be accomplished using hydrogen or a hydrogen / nitrogen mixture (95% by volume of N2 + 5% by weight of H2) or ethylene. According to EP 0 634 209, the reduction is conducted using hydrogen at temperatures in the range 40 to 260 ° C, preferably 70 to 200 ° C. However, the catalyst is often reduced by ethylene directly in the production reactor only after activation by alkali metal acetate.
No processo de produção, o catalisador é primeiramente supridoapenas lentamente com os reagentes. Durante esta fase de partida, a ativi-dade do catalisador aumenta e atinge seu nível final apenas depois de diasou semanas.In the production process, the catalyst is first supplied slowly only with the reagents. During this starting phase, catalyst activity increases and reaches its final level only after days or weeks.
O documento n2 EP 0 431 478 descreve um processo para pre-parar acetato de vinila na fase gasosa a partir de etileno, ácido acético e oxi-gênio sobre um catalisador que contém paládio e ouro sobre um suporte. Osuporte compreende uma mistura de SÍO2/AI2O3, sedo as partículas de su-porte imprensadas com o auxílio de sais de Li, Mg, Al, Zn ou Mn de um ácidocarboxílico de C2-C20 como aglutinante.EP 0 431 478 describes a process for preparing gas phase vinyl acetate from ethylene, acetic acid and oxygen on a palladium and gold containing catalyst on a support. The support comprises a mixture of SiO 2 / Al 2 O 3 and the support particles compressed with the aid of Li, Mg, Al, Zn or Mn salts of a C 2 -C 20 carboxylic acid as a binder.
O documento ne EP 0 723 810 A1 descreve um catalisador so-bre suporte para a produção do monômero acetato de vinila, que contémpaládio, ouro e acetato de metal alcalino como componentes cataliticamenteativos sobre um suporte constituído de dióxido de silício, aluminossilicato ouoxido de alumínio, sendo que o suporte contém adicionalmente pelo menosum elemento dos grupos IA, MA, MIA e IVB da Tabela Periódica.EP 0 723 810 A1 discloses a support catalyst for the production of the vinyl acetate monomer which contains palladium, gold and alkali metal acetate as catalytic reactive components on a support consisting of silicon dioxide, aluminosilicate or aluminum oxide, wherein the support additionally contains at least one element from groups IA, MA, MIA and IVB of the Periodic Table.
A invenção fornece um catalisador que compreende paládio, ou-tro e acetato de metal alcalino como componentes cataliticamente ativos so-bre um suporte, que se distingue pelo fato de que o catalisador é modificadopor meio de titânio, ferro, lantânio, cério, ítrio e/ou molibdênio ou seus óxi-dos.The invention provides a catalyst comprising palladium, other and alkali metal acetate as catalytically active components on a support, which is distinguished by the fact that the catalyst is modified by titanium, iron, lanthanum, cerium, yttrium and / or molybdenum or its oxides.
O material de suporte pode conter vantajosamente entre 0,1 e10% em peso dos respectivos componentes dopantes.The support material may advantageously contain from 0.1 to 10% by weight of the respective doping components.
Na qualidade do material de suporte, é possível usar aluminossi-licato, por exemplo, KA-160 da Südchemie, dióxido de silício, por exemplo,Aerolyst 3045 (Degussa), ou dióxido de titânio, por exemplo, Aerolyst 7751(Degussa).As the support material, it is possible to use aluminosilicate, for example Südchemie KA-160, silicon dioxide, for example Aerolyst 3045 (Degussa), or titanium dioxide, for example Aerolyst 7751 (Degussa).
A invenção fornece ainda um processo para produzir o catalisa-dor, que se distingue pelo fato de que o suporte é impregnado com um saldo pelo menos um componente dopante, calcinado e subseqüentementeimpregnado com o componente cataliticamente ativo, ou o material de supor-te é misturado com um oxido do componente dopante, modelado e subse-qüentemente impregnado com os componentes cataliticamente ativos.The invention further provides a process for producing the catalyst, which is distinguished by the fact that the support is impregnated with a balance of at least one doping component, calcined and subsequently impregnated with the catalytically active component, or the support material is. mixed with a doping component oxide, modeled and subsequently impregnated with the catalytically active components.
Em uma modalidade da invenção, pelo menos um componentedopante pode ser aplicado ao suporte simultaneamente com o componentecataliticamente ativo.In one embodiment of the invention at least one doping component may be applied to the carrier simultaneously with the catalytically active component.
O catalisador da invenção tem a vantagem de que a proporçãode metal nobre no catalisador necessária para atingir o rendimento espa-ço/tempo pode ser reduzida.ExemplosThe catalyst of the invention has the advantage that the proportion of noble metal in the catalyst required to achieve space / time yield can be reduced.
O material de suporte do catalisador do exemplo A compreende4% de oxido de ítrio e 96% de dióxido de silício (Degussa Aerolyst 3045). Oscomponentes ativos são paládio, ouro e acetato de potássio.The catalyst support material of Example A comprises 4% yttrium oxide and 96% silicon dioxide (Degussa Aerolyst 3045). The active components are palladium, gold and potassium acetate.
O catalisador comparativo B compreende apenas os componen-tes ativos paládio, ouro e acetato de potássio aplicados sobre um aluminos-silicato como material de suporte (Südchemie KA-160).Comparative catalyst B comprises only the active components palladium, gold and potassium acetate applied to an aluminosilicate as a support material (Südchemie KA-160).
No caso do catalisador do exemplo C, os componentes ativospaládio, ouro e acetato de potássio foram aplicados a um material de suporteque compreende 4,5% de dióxido de titânio, 4,5% de ferro e 91% de dióxidode silício (Degussa Aerolyst 3045).In the case of the catalyst of example C, the active components palladium, gold and potassium acetate were applied to a support material comprising 4.5% titanium dioxide, 4.5% iron and 91% silicon dioxide (Degussa Aerolyst 3045 ).
O catalisador do exemplo D compreende os componentes ativosaplicados a um dióxido de titânio e modificado com 0,3% de oxido de cério,0,8% de oxido de ferro e 0,01% de oxido de molibdênio (Degussa Aerolyst7751).The catalyst of example D comprises the active components applied to a titanium dioxide and modified with 0.3% cerium oxide, 0.8% iron oxide and 0.01% molybdenum oxide (Degussa Aerolyst7751).
O material de suporte do catalisador do exemplo E compreende1% de oxido de ítrio, 0,65% de oxido de ferro e 98,35% de dióxido de silício(Degussa Aerolyst 3045).The catalyst support material of Example E comprises 1% Yttrium Oxide, 0.65% Iron Oxide and 98.35% Silicon Dioxide (Degussa Aerolyst 3045).
No caso do catalisador do exemplo F, um dióxido de silício quecontém 3,5% de oxido de iantanio e 6% de oxido de molibdênio foi usadocomo material de suporte e impregnado com os componentes ativos paládio,ouro e acetato de potássio e, simultaneamente com eles, 0,9% de oxido deferro.In the case of the catalyst of example F, a silicon dioxide containing 3.5% anthanium oxide and 6% molybdenum oxide was used as a support material and impregnated with the active components palladium, gold and potassium acetate and, simultaneously with they, 0.9% iron oxide.
No caso do catalisador do exemplo G, um material de suporteque compreende 1,5% de oxido de Iantanio e 98,5% de dióxido de titânio(Degussa Aerolyst 7751) foi usado e impregnado com os componentes ativos.In the case of the catalyst of Example G, a support material comprising 1.5% Ianthanium Oxide and 98.5% Titanium Dioxide (Degussa Aerolyst 7751) was used and impregnated with the active components.
O catalisador comparativo H compreende 1% de oxido de boro e99% de dióxido de silício como material de suporte mais os componentesativos paládio, ouro e acetato de potássio.A tabela que se segue relata o rendimento de monômero aceta-to de vinila como medida da atividade dos catalisadores em gramas de mo-nômero acetato de vinila por hora e grama de paládio a 155 °C, uma pressãode 0,7 MPa (7 bar) e um GHSV def 3.000 h"1:Comparative catalyst H comprises 1% boron oxide and 99% silicon dioxide as support material plus palladium, gold and potassium acetate. The following table reports the yield of vinyl acetate monomer as a measure of catalyst activity in grams of vinyl acetate per hour and gram of palladium at 155 ° C, a pressure of 0.7 MPa (7 bar) and a GHSV def 3,000 h "1:
<table>table see original document page 6</column></row><table><table> table see original document page 6 </column> </row> <table>
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI0804255 BRPI0804255A2 (en) | 2008-10-02 | 2008-10-02 | catalyst |
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| Application Number | Priority Date | Filing Date | Title |
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| BRPI0804255 BRPI0804255A2 (en) | 2008-10-02 | 2008-10-02 | catalyst |
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| BRPI0804255A2 true BRPI0804255A2 (en) | 2010-07-06 |
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2008
- 2008-10-02 BR BRPI0804255 patent/BRPI0804255A2/en not_active Application Discontinuation
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