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公开(公告)号：US3822308A
公开(公告)日：1974-07-02
申请号：US23432272
申请日：1972-03-13
Applicant: BAYER AG
Inventor： KROENIG WALTER , SCHARFE GERHARD
CPC classification number: B01J37/0205 , B01J23/44 , B01J23/52 , B01J37/03 , C07C67/055 , C07C69/01 , C07C69/15
Abstract: IMPROVEMENT IN A PROCESS FOR THE PRODUCTION OF VINYL ESTERS BY REACTING ETHYLENE, LOWER CARBOXYLIC ACIDS WITH 2 TO 4 CARBON ATOMS AND OXYGEN IN THE GAS PHASE AT ELEVATED TEMPERATURE AND NORMAL OR ELEVATED PRESSURE, IN THE PRESENCE OF SUPPORTED CATALYST CONSISTING ESSENTIALLY OF PALLADIUM, GOLD AND AN ALKALI METAL ACETATE ON A SILICIC ACID SUPPORT, WHICH IMPROVEMENT COMPRISES PREPARING THE CATALYST BY TREATING THE SUPPORT, SIMULTANEOUSLY OR SUCCESSIVELY OR IN COMBINATION WITH A SOLUTION A DND A SOLUTION B, THE SOLUTION A CONTAINING DISSOLVED SALTS OF PALLADIUM AND GOLD AND THE SOLUTION B CONTAINING COMPOUNDS WHICH ARE ABLE TO REACT ON THE CATALYST SUPPORT WITH THE NOBLE METAL SALTS OF THE SOLUTION A TO FORM WATER-IN-SOLUBLE NOBLE METAL COMPOUNDS WHICH ARE SUBSTANTIALLY FREE OF HALOGEN, SULPHUR AND NITROGEN, IMPREGNATING THE CATALYST SUPPORT WITH THE SOLUTIONS A AND B IR WITH THE COMBINED SOLUTION OF A AND B IN QUANITIES WHICH CORRESPOND TO FROM 1 TO 110% OF THE ABSORPTIVE CAPACITY OF THE CATALYST SUPPORT FOR THESE SOLUTIONS: SUBJECTING THE CATALYST SUPPORT IMPREGNATED WITH THE SOLUTIONS A AND B TO A TIME/ TEMPERATURE-TREATMENT WHICH IS SUCH THAT 95% AT LEAST OF THE IMTHE IMPREGNATED PALLADIUM AND 95% AT LEAST OF THE IMPREGNATED GOLD IS TRANSFORMED INTO WATER-INSOLUBLE NOBLE METAL COMPOUNDS, TREATING THE WATER-INSOLUBLE NOBLE COMPOUNDS WITH A REDUCING AGENT TO COVEY THESE COMPOUNDS SUBSTANTIALLY INTO THE CORRESPONDING NOBLE METALS AND REMOVING THE WATER-SOLUBLE COMPOUNDS WHICH ARE CONTAINED IN THE CATALYST BY WASHING, AND APPLYING AN ALKALI METAL COMPOUND BEFORE OR AFTER THE TREATMENT WITH THE REDUCIING AGENTS, THE ALKALI METAL COMPOUNDS CONSISTING OF ALKALI METAL CARBOXYLATES OR OF ALKALI METAL COMPOUNDS WHICH ARE WHOLLY OR IN PART TRANSFORMED INTO ALKALI METAL CARBOXYLATES UNDER THE REACTION CONDITIONS.
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公开(公告)号：US3775342A
公开(公告)日：1973-11-27
申请号：US3775342D
申请日：1971-12-29
Applicant: BAYER AG
Inventor： KROENIG WALTER , SCHARFE GERHARD
CPC classification number: B01J37/0205 , B01J23/44 , B01J23/52 , B01J37/03 , C07C67/055 , C07C69/01 , C07C69/15
Abstract: HIGHLY ACITIVE CATALYSTS FOR THE PREPARATION OF CATALYSTS SUITABLE FOR VINYL ESTER, E.G., VINYL ACETATE, PRODUCTION ARE PREPARED BY TREATING A CATALYST SUPPORT, SIMULTANIOUSLY OR IN EITHER SEQUENCE, WITH OR WITHOUT INTERMEDIATE DRYING, WITH: (A) A SOLUTON OF NOBLE METALS CONTAINING AT LEAST SALTS OF PALLADIUM AND GOLD, AND (B) A SOLUTION CONTAINING COMPOUNDS, E.G., GASES SUCH AS SODIUM HYDROXIDE, WHICH ARE ABLE TO REACT WITH THE NOBLE METAL SALTS OF THE SOLUTION (A) TO FORM WATER INSOLUBLE NOBLE METAL COMPOUNDS; IMPREGNATING THE CATALYST SUPPORT WITH SUCH QUANTITIES OF SOLUTIONS (A) AND (B) CORRESPONDING TO FROM 10 TO 110% OF THE ABSORPTIVE CAPACITY OF THE CATALYST SUPPORT FOR THESE SOLUTIONS; SUBJECTING THE IMPREGNATED CATALYST SUPPORT TO A TIME TEMPERATURE TREATMENT SUCH THAT AT LEAST 95% OF THE IMPREGNATED PALLADIUM AND GOLD ARE TRANSFORMED INTO WATER INSOLUBLE NOBLE METAL COMPOUNDS; REDUCING THE METAL COMPOUNDS TO THE NOBLE METAL WITH A REDUCING AGENT, E.G., ETHYLENE OR HYDRAZINE; REMOVING THE WATER-SOLUBLE COMPOUNDS WHICH ARE CONTAINED IN THE CATALYST BY WASHING BEFORE OR AFTER THE REDUCTION STEP; AND OPTIONALLY TREATING THE RESULTING CATALYST WITH AN ALKALI METAL CARBOXYLATE, E.G., ACETATE, BEFORE OR AFTER THE TREATMENT WITH THE REDUCING AGENT.
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公开(公告)号：DE1793519A1
公开(公告)日：1972-01-27
申请号：DE1793519
申请日：1968-09-28
Applicant: BAYER AG
Inventor： KROENIG WALTER , SCHARFE GERHARD
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公开(公告)号：GB1149093A
公开(公告)日：1969-04-16
申请号：GB2048266
申请日：1966-05-09
Applicant: BAYER AG
Inventor： KROENIG WALTER , MAYRHOFER WILHELM , SCHARFE GERHARD , HALCOUR KURT
Abstract: 1,149,093. Propane. FARBENFABRIKEN BAYER A.G. 9 May, 1966 [8 May, 1965], No. 20482/66. Heading C5E. [Also in Division B1] Unsaturated hydrocarbons in a C 3 -phase (mainly propylene, but may contain small amounts of allene and methyl acetylene) are completely hydrogenated to propane in the liquid phase over a noble metal catalyst in a practically stationary atmosphere of hydrogen. The process is preferably in the trickle-phase. The catalyst may be platinum or palladium on a support, e.g. alumina and/or an aluminium spinel, the spinel-forming metal being Li, Be, Mg, Mn, Cu or Ni. The reaction product is preferably recycled through the process in an amount of 0À3-3À0 parts per part of fresh feed. Suitable hydrogenation conditions are: temp. 10-75‹ C., pressure 10-50 atm. gauge, and feed throughput 2-20 kg/litre of catalyst.
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公开(公告)号：FI50111C
公开(公告)日：1975-12-10
申请号：FI305569
申请日：1969-10-23
Applicant: BAYER AG
Inventor： SCHWERDTEL WULF , KROENIG WALTER , SCHARFE GERHARD , SWODENK WOLFGANG
IPC: B01J19/00 , C07C67/055 , C07C67/48 , C07C69/15 , C07C69/14
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Patent Agency Ranking
公开(公告)号：FI50111B
公开(公告)日：1975-09-01
申请号：FI305569
申请日：1969-10-23
Applicant: BAYER AG
Inventor： SCHWERDTEL WULF , KROENIG WALTER , SCHARFE GERHARD , SWODENK WOLFGANG
IPC: B01J19/00 , C07C67/055 , C07C67/48 , C07C69/15 , C07C69/14
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公开(公告)号：CH534005A
公开(公告)日：1973-02-28
申请号：CH1922768
申请日：1968-12-23
Applicant: BAYER AG
Inventor： KROENIG WALTER , SCHARFE GERHARD
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公开(公告)号：BG24537A3
公开(公告)日：1978-03-10
申请号：BG1145569
申请日：1969-01-15
Applicant: BAYER AG
Inventor： KROENIG WALTER , SCHARFE GERHARD
Abstract: 1,246,015. Supported palladium-gold catalysts. FARBENFABRIKEN BAYER A.G. 17 Jan., 1969 [1 Feb., 1968; 28 Sept., 1968], No. 2754/69. Heading B1E. [Also in Division C2] A supported catalyst containing palladium and gold is prepared by impregnating the catalyst support, simultaneously or successively with or without intermediate drying, with a solution A and a solution B in optional order or with the combined solutions A and B, the solution A containing dissolved salts of palladium and gold and the solution B containing compounds which are able to react on the catalyst support with the noble metal salts of the solution A to form water-insoluble noble metal compounds which are practically free from halogen, sulphur and nitrogen; in quantities which correspond to from 10 to 110% of the absorptive capacity of the catalyst support for these solutions; subjecting the catalyst support impregnated with solutions A and B to a temperature of 0 to 100‹C for 1 to 100 hours which is such that at 95% at least of the impregnated palladium and 95% at least of the impregnated gold is transformed into water-insoluble noble metal compounds, treating the water-insoluble noble metal compounds with reducing agents so as to convert those compounds substantially into the corresponding noble metals and removing the water-soluble compounds which are containing in the catalyst by washing, before or after the reduction step. The catalyst is used in the production of vinyl esters by reacting ethylene, a carboxylic acid with 2 to 4 carbon atoms and oxygen in the gas phase of elevated temperature and normal or elevated pressure.
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公开(公告)号：GB1246015A
公开(公告)日：1971-09-15
申请号：GB275469
申请日：1969-01-17
Applicant: BAYER AG
Inventor： KROENIG WALTER , SCHARFE GERHARD
Abstract: 1,246,015. Supported palladium-gold catalysts. FARBENFABRIKEN BAYER A.G. 17 Jan., 1969 [1 Feb., 1968; 28 Sept., 1968], No. 2754/69. Heading B1E. [Also in Division C2] A supported catalyst containing palladium and gold is prepared by impregnating the catalyst support, simultaneously or successively with or without intermediate drying, with a solution A and a solution B in optional order or with the combined solutions A and B, the solution A containing dissolved salts of palladium and gold and the solution B containing compounds which are able to react on the catalyst support with the noble metal salts of the solution A to form water-insoluble noble metal compounds which are practically free from halogen, sulphur and nitrogen; in quantities which correspond to from 10 to 110% of the absorptive capacity of the catalyst support for these solutions; subjecting the catalyst support impregnated with solutions A and B to a temperature of 0 to 100‹C for 1 to 100 hours which is such that at 95% at least of the impregnated palladium and 95% at least of the impregnated gold is transformed into water-insoluble noble metal compounds, treating the water-insoluble noble metal compounds with reducing agents so as to convert those compounds substantially into the corresponding noble metals and removing the water-soluble compounds which are containing in the catalyst by washing, before or after the reduction step. The catalyst is used in the production of vinyl esters by reacting ethylene, a carboxylic acid with 2 to 4 carbon atoms and oxygen in the gas phase of elevated temperature and normal or elevated pressure.
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公开(公告)号：GB1207269A
公开(公告)日：1970-09-30
申请号：GB4320268
申请日：1968-09-11
Applicant: BAYER AG
Inventor： KROENIG WALTER , HALCOUR KURT
IPC: C10G65/06
Abstract: 1,207,269. Hydrogenation of pyrolysis gasoline. FARBENFABRIKEN BAYER A.G. 11 Sept., 1968 [19 Oct., 1967], No. 43202/68. Addition to 1,109,726. Heading C5E. In a modification of the process for the selective hydrogenation of pyrolysis gasolines or fractions thereof in the presence of noble metal catalysts on aluminium spinel supports at an elevated temperature according to the parent Specification 1,109,726, the hydrogenation treatment at a temperature below 100‹ C. is followed by a similar treatment at a temperature of from 150‹ to 250‹ C., noble metals on aluminium spinel supports being used as catalysts. The first hydrogenation removes gum-forming diolefins; the second removes mono-olefins. Some desulphurization also takes place. The catalyst may be Pd or mixtures of Pd with Pt, Ru or Au. The spinel may be made by heating Al 2 O 3 with an oxide of Li, Be, Mg, Zn, Mn, Co or Ni.
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