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1. WO1996004989 - PROCESS FOR PREPARING SILVER CATALYST

Publication Number WO/1996/004989
Publication Date 22.02.1996
International Application No. PCT/US1994/008950
International Filing Date 09.08.1994
Chapter 2 Demand Filed 02.09.1994
IPC
B01J 23/50 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
23Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/113
38of noble metals
48Silver or gold
50Silver
B01J 37/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
02Impregnation, coating or precipitation
B01J 37/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
08Heat treatment
CPC
B01J 23/50
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
23Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
38of noble metals
48Silver or gold
50Silver
B01J 37/0203
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
02Impregnation, coating or precipitation
0201Impregnation
0203the impregnation liquid containing organic compounds
B01J 37/086
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
08Heat treatment
082Decomposition and pyrolysis
086Decomposition of an organometallic compound, a metal complex or a metal salt of a carboxylic acid
Applicants
  • SCIENTIFIC DESIGN COMPANY, INC. [US/US]; 49 Industrial Avenue Little Ferry, NJ 07643-1901, US
Inventors
  • RIZKALLA, Nabil; US
Agents
  • JOHNSON, Kenneth, H.; P.O. Box 630708 Houston, TX 77263, US
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROCESS FOR PREPARING SILVER CATALYST
(FR) PROCEDE DE PREPARATION D'UN CATALYSEUR A BASE D'ARGENT
Abstract
(EN)
An improved silver catalyst for the oxidation of ethylene with molecular oxygen is made by impregnating a porous support with a silver salt of a neo acid; subjecting the impregnated support to a low temperature activation by heating at a temperature in the range of 250 °C to 300 °C on a moving belt in an atmosphere containing less oxygen than air, and post impregnating the support with an alkali metal, preferably cesium.
(FR)
Préparation d'un catalyseur perfectionné à base d'argent, destiné à l'oxydation de l'éthylène à l'aide d'oxygène moléculaire, consistant à imprégner un support poreux avec un sel d'argent d'un néoacide, à soumettre le support imprégné à une activation à basses températures en le chauffant à une température comprise entre 250 et 300 °C, sur un tapis roulant, dans une atmosphère contenant moins d'oxygène que l'air, puis à imprégner le support avec un métal alcalin, de préférence du césium.
Also published as
DE4481119
GB9606642.8
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