Ethylene oxide prodn using a silver catalyst - from ethylene and oxygen
Патенты
| Язык: |
Французский |
| Тип: |
Патент на изобретение |
| Номер (11) |
BE 806834 |
| Номер заявки (21): |
1973-137341 |
| Дата подачи заявки (22): |
31 окт. 1973 г. |
| Дата начала отсчета срока действия патента (24): |
|
| Дата публикации патента (44,45,46): |
30 апр. 1974 г. |
| Дата публикации заявки (43): |
|
| Авторы |
Gelbshtein A.I.
,
Vasilevich L.A.
,
Frolkina I.T.
,
Boreskov G.K.
,
Dyment O.N.
,
Stepanov Yu.N.
,
Chesnokov B.B.
,
Slinko M.G.
,
Utkina N.S.
,
Stroganova V.V.
,
Aksenova M.S.
,
Davydov V.A.
,
Talaeva I.G.
,
Prosvirova O.B.
,
Zakharova I.B.
|
| Организации |
|
Oxidation is effected with air or O2 at 200-300 degrees C at a p.p. of ethylene of 0.6-15 atmos. abs., a p.p. of O2 of 0.1-2 atm. abs. and a total press. of 2-20 atmos. abs., in a packed reactor, the fluidised Ag catalyst also contg. cadmium carbonate and/or oxide and corundum particles 2 mu - 0.5 mm in diameter. The catalyst comprises 9.5-76% Ag; 0.5-4% Cd. carbonate and/or oxide (calc. with respect to metallic Cd) and 90-20% corundum. Selectivity is increased by the presence of 0.03-0.3% AgCl, by wt. of the Ag present in the catalyst.