公开(公告)号：DE2844402A1

公开(公告)日：1980-04-30

申请号：DE2844402

申请日：1978-10-12

Applicant: BASF AG

Inventor： TITZENTHALER ECKART DIPL CHEM ,  SCHWEN ROLAND DIPL CHEM DR

IPC: B01J23/66 ,  C07D301/10

Abstract: This invention concerns a new carrier catalyst, the active mass of which contains silver, a process for its manufacture and a process for the manufacture of ethylene oxide by reacting oxygen-containing gases with ethylene by using this catalyst. This carrier catalyst comprising a carrier material and a catalyst, the active mass of which is 20 to 90 percent by weight of silver, 0.005 to 5 percent by weight of lithium, and 3 to 70 percent by weight of SiO2 in free form or in the form of silicates, is extremely well suited for the manufacture of ethylene oxide by adding oxygen to ethylene.

公开(公告)号：DE2933950A1

公开(公告)日：1981-03-12

申请号：DE2933950

申请日：1979-08-22

Applicant: BASF AG

Inventor： MROSS WOLF DIETER DIPL CHEM DR ,  TITZENTHALER ECKART DIPL CHEM ,  KOOPMANN JUERGEN DIPL CHEM DR ,  VOGT VOLKER DIPL CHEM DR ,  SCHWARZMANN MATTHIAS DIPL CHEM

IPC: B01J23/66 ,  B01J37/06 ,  C07D301/10 ,  B01J23/50

Abstract: Alpha-Al2O3-supported Ag catalysts for ethylene oxide prepn., from C2H4 and O2, contain less than 0.001 wt.% alkali-soluble Si cpds. (I), calculated as SiO2 and w.r.t. total catalyst wt. Long catalyst life can be achieved without loss in activity and selectivity.

公开(公告)号：DE2904919A1

公开(公告)日：1980-08-21

申请号：DE2904919

申请日：1979-02-09

Applicant: BASF AG

Inventor： MROSS WOLF DIETER DIPL CHEM DR ,  TITZENTHALER ECKART DIPL CHEM ,  KOOPMANN JUERGEN DIPL CHEM DR ,  VOGT VOLKER DIPL CHEM DR ,  SCHWARZMANN MATTHIAS DIPL CHEM

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

Abstract: Supported catalysts containing silver and alkali metals, for the preparation of ethylene oxide from ethylene and oxygen in the gas phase, are prepared or regenerated by modifying, respectively, a new or spent supported catalyst which already contains metallic silver and may or may not contain the light alkali metals lithium and/or sodium and, where a spent catalyst is concerned, also contains the heavy alkali metals potassium, rubidium and/or cesium, with a solution containing the heavy alkali metals, the modifier solution used containing (a) a surfactant and/or a reducing agent, in the case of the preparation of a new catalyst or (b) a surfactant, in the case of the regeneration of a spent catalyst.

公开(公告)号：DE2820520A1

公开(公告)日：1979-11-15

申请号：DE2820520

申请日：1978-05-11

Applicant: BASF AG

Inventor： MROSS WOLF DIETER DIPL CHEM DR ,  TITZENTHALER ECKART DIPL CHEM ,  KOOPMANN JUERGEN DIPL CHEM DR ,  VOGT VOLKER DIPL CHEM DR ,  SCHWARZMANN MATTHIAS DIPL CHEM

IPC: B01J23/66 ,  C07D301/10

Abstract: Prepn. of a catalyst for preparing ethylene oxide by gas-phase C2H4 oxidn. with O2 contg. 2-12% elemental silver and alkali metals (including K, Rb and/or Cs) on a support (pref. Al2O3) comprises post-treating the reduced Ag-and opt. Na- and/or Li-contg. catalyst with a soln. (pref. alcoholic) of a K, Rb and/or Cs cpd. Soln. quantity used is such that the soln. absorbed by catalyst corresponds to a quantity of 0.05-0.35 atom% K, 0.003-0.25 atom % Rb and/or 0.005-0.2 atmo % Cs, based on Ag, if necessary considering alkali metal quantities already present on catalyst. The improvement comprises using a post-treatment soln. which contains an organic cpd. (I) which forms complex salts with Ag (I)-ions via an O- and/or N atom. Use of (I) improves catalyst selectivity and activity.

公开(公告)号：DE2704197A1

公开(公告)日：1978-08-31

申请号：DE2704197

申请日：1977-02-02

Applicant: BASF AG

Inventor： MROSS WOLF DIETER DIPL CHEM DR ,  TITZENTHALER ECKART DIPL CHEM ,  SCHWARZMANN MATTHIAS DIPL CHEM ,  KOOPMANN JUERGEN DIPL CHEM DR

IPC: B01J23/66 ,  C07D301/10

Abstract: Catalysts for ethylene oxide prepn. from ethylene and O2 comprise Ag and alkali metals or their cpds. deposited on a support. The catalysts contain (a) 0.1-2 atom % Na and (b) either 0.05-0.35 atom % K, 0.003-0.25 atom % Rb, 0.0005-0.2 atom % Cs or a corresp. amt. of a mixt. thereof. All percentages are based on the Ag content. The Ag content is pref. 2-12 (esp. 5-10) wt.% based on the wt. of the catalyst. The catalysts are pref. prepd. by impregnating the support with an aq. soln. of an Ag complex salt (e.g. an Ag-amine carboxylate) and suitable alkali metal cpds. (e.g. hydroxides), steaming the resulting composite until the Ag cpd. decomposes, and calcining the product at 100-400 degrees C to constant wt. Other standard methods can also be used. The catalysts have higher activity and selectivity than conventional Ag catalysts promoted with alkali(ne earth) metals, and/or have a longer life.

公开(公告)号：DE2640540A1

公开(公告)日：1978-03-23

申请号：DE2640540

申请日：1976-09-09

Applicant: BASF AG

Inventor： MROSS WOLF DIETER DIPL CHEM DR ,  TITZENTHALER ECKART DIPL CHEM ,  SCHWARZMANN MATTHIAS DIPL CHEM ,  KOOPMANN JUERGEN DIPL CHEM DR

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

Abstract: Catalysts for ethylene oxide prepn. from ethylene and O2 comprise Ag and alkali metals or their cpds. deposited on a support. The catalysts contain (a) 0.1-2 atom % Na and (b) either 0.05-0.35 atom % K, 0.003-0.25 atom % Rb, 0.0005-0.2 atom % Cs or a corresp. amt. of a mixt. thereof. All percentages are based on the Ag content. The Ag content is pref. 2-12 (esp. 5-10) wt.% based on the wt. of the catalyst. The catalysts are pref. prepd. by impregnating the support with an aq. soln. of an Ag complex salt (e.g. an Ag-amine carboxylate) and suitable alkali metal cpds. (e.g. hydroxides), steaming the resulting composite until the Ag cpd. decomposes, and calcining the product at 100-400 degrees C to constant wt. Other standard methods can also be used. The catalysts have higher activity and selectivity than conventional Ag catalysts promoted with alkali(ne earth) metals, and/or have a longer life.