公开(公告)号：DE3136984A1

公开(公告)日：1983-03-31

申请号：DE3136984

申请日：1981-09-17

Applicant: BASF AG

Inventor： HOELDERICH WOLFGANG DIPL CHEM ,  MROSS WOLF DIETER DIPL CHEM DR ,  SCHWARZMANN MATTHIAS DIPL CHEM

IPC: C07C1/20 ,  C07C11/02 ,  C07C1/24

Abstract: A process for the preparation of olefins from methanol and/or dimethyl ether by conversion in the presence of a zeolite catalyst, in particular a borosilicate zeolite, at elevated temperature, with the addition of a small amount of an electron donor.

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.