Title:
CATALYST FOR OXIDIZING ETHYLENE TO ETHYLENE OXIDE IN GASEOUS PHASE AND PRODUCTION AND USE THEREOF
Document Type and Number:
Japanese Patent JPS58174238
Kind Code:
A
Abstract:
A supported silver catalyst for the oxidation of ethylene with molecular oxygen to ethylene oxide is made by depositing silver on a support capable of selectively adsorbing alkali metals, activating the silver under conditions chosen to provide the optimum selectivity to ethylene oxide and thereafter depositing an amount of an alkali metal sufficient to increase selectivity of the silver catalyst above its alkali-free state. The catalyst most preferably employs a ceramic support having a surface area of 0.3-0.8 m2/gm. The amount of alkali metal on the finished catalyst is most preferably 50-300 ppm by weight. The catalyst may also include additional promoters, such as the alkaline earth metals, preferably barium.
Inventors:
UIRIAMU DEII AAMUSUTORONGU
Application Number:
JP4967583A
Publication Date:
October 13, 1983
Filing Date:
March 24, 1983
Export Citation:
Assignee:
HALCON INTERNATIONAL INC
International Classes:
B01J23/66; B01J35/02; B01J35/10; B01J37/02; C07D301/10; C07D303/04; (IPC1-7): B01J23/66; B01J37/02; C07D301/10; C07D303/04
Domestic Patent References:
| JPS52117293A | 1977-10-01 | |||
| JPS5314689A | 1978-02-09 | |||
| JPS5415491A | 1979-02-05 | |||
| JPS531191A | 1978-01-07 |
Attorney, Agent or Firm:
Masamitsu Akizawa (1 person outside)
Previous Patent: JPS58174237
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