公开(公告)号：DD232652A5

公开(公告)日：1986-02-05

申请号：DD25247283

申请日：1983-06-28

Applicant: HOECHST AG

Inventor： REBSDAT SIEGFRIED ,  MAYER SIGMUND ,  ALFRANSEDER JOSEF

IPC: B01J23/66 ,  B01J37/02 ,  C07B61/00 ,  C07D301/10 ,  C07D303/04

公开(公告)号：DD209749A5

公开(公告)日：1984-05-23

申请号：DD25022483

申请日：1983-04-26

Applicant: HOECHST AG

Inventor： REBSDAT SIEGFRIED ,  MAYER SIGMUND ,  ALFRANSEDER JOSEF

IPC: B01J23/54 ,  B01J23/66 ,  C07D301/10 ,  B01J27/24

公开(公告)号：BR8304218A

公开(公告)日：1984-03-13

申请号：BR8304218

申请日：1983-08-05

Applicant: HOECHST AG

Inventor： REBSDAT SIEGFRIED ,  MAYER SEGMUND ,  ALFRANSEDER JOSEF

IPC: B01J23/66 ,  B01J23/96 ,  B01J38/48 ,  C07B61/00 ,  C07D301/10 ,  C07D301/04

Abstract: A method for improving the activity of a used supported silver catalyst, used for the manufacture of ethylene oxide by reaction of ethylene with oxygen or air, which method consists essentially of: (a) impregnating said used catalyst at a temperature from 80 DEG C. to 150 DEG C. and for 0.75 hour to 10 hours with an impregnating solution containing water, a water-miscible organic solvent selected from the group consisting of methanol, ethanol, propanol, and isopropanol, at least one compound of cesium, rubidium, or of cesium and rubidium in an amount providing from 50 mg to 1000 mg per kilogram of solution, said solution containing from 5 to 50 percent by weight of water; (b) separating the impregnated catalyst from excess impregnating solution; and (c) drying the impregnated catalyst.

公开(公告)号：AU1639283A

公开(公告)日：1984-01-05

申请号：AU1639283

申请日：1983-06-29

Applicant: HOECHST AG

Inventor： REBSDAT SIEGFRIED ,  MAYER SIGMUND ,  ALFRANSEDER JOSEF

IPC: B01J23/58 ,  B01J23/66 ,  B01J37/02 ,  C07D301/10 ,  B01J23/02

Abstract: Silver catalysts, useful for the oxidation of ethylene to ethylene oxide, contain 3-20 percent by weight of silver and 0.003-0.05 percent by weight of potassium, rubidium, cesium, or a mixture thereof as a promoter present on a heat-resistant porous support to which they have been applied by several impregnating steps.

公开(公告)号：AU522992B2

公开(公告)日：1982-07-08

申请号：AU3964178

申请日：1978-09-07

Applicant: HOECHST AG

Inventor： REBSDAT SIEGFRIED ,  MAYER SIEGMUND ,  ALFRANSEDER JOSEF ,  RIEDL JOSEF

IPC: B01J23/96 ,  B01J38/48 ,  C07B61/00 ,  C07D301/10 ,  C07D303/04 ,  B01J23/66

Abstract: The activity of supported silver catalysts, which have been used for the direct oxidation of ethylene to ethylene oxide with molecular oxygen or air and to which from 1 to 1,000 parts, per 1 million parts of catalyst, of cesium and/or rubidium have been applied, is improved by washing the catalyst with an inert liquid prior to the application of cesium and/or rubidium.

公开(公告)号：CA960698A

公开(公告)日：1975-01-07

申请号：CA115203

申请日：1971-06-09

Applicant: HOECHST AG

Inventor： SCHUIERER ERICH ,  ULM KLAUS ,  REBSDAT SIEGFRIED ,  WIMMER IGNAZ

IPC: C07C29/12 ,  C07C31/38 ,  C07C31/40 ,  C07C203/00 ,  C07C203/04

公开(公告)号：CA878024A

公开(公告)日：1971-08-10

申请号：CA878024D

Applicant: HOECHST AG

Inventor： SCHUIERER ERICH ,  HAHN HELMUT ,  REBSDAT SIEGFRIED ,  MULLER KLAUS-DIETER

公开(公告)号：CA869592A

公开(公告)日：1971-04-27

申请号：CA869592D

Applicant: HOECHST AG

Inventor： RUCHLAK KASIMIR ,  REBSDAT SIEGFRIED ,  SCHUIERER ERICH ,  HAHN HELMUT

公开(公告)号：MX162490A

公开(公告)日：1991-05-13

申请号：MX19787683

申请日：1983-06-30

Applicant: HOECHST AG

Inventor： REBSDAT SIEGFRIED ,  MAXER SIGMUND ,  ALFRANSEDER JOSEF

IPC: B01J23/58 ,  B01J23/66 ,  B01J37/02 ,  C07D301/10 ,  C07D303/04

Abstract: Silver catalysts, useful for the oxidation of ethylene to ethylene oxide, contain 3-20 percent by weight of silver and 0.003-0.05 percent by weight of potassium, rubidium, cesium, or a mixture thereof as a promoter present on a heat-resistant porous support to which they have been applied by several impregnating steps.

公开(公告)号：HU190487B

公开(公告)日：1986-09-29

申请号：HU145783

申请日：1983-04-28

Applicant: HOECHST AG

Inventor： REBSDAT SIEGFRIED ,  MAYER SIGMUND ,  ALFRANSEDER JOSEF

IPC: B01J23/54 ,  B01J23/66 ,  C07D301/10 ,  B01J23/50