| 摘要 |
1,161,156. Purifying olefins. COMPAGNIE FRANCAISE DE RAFFINAGE. 14 Feb., 1967 [.6-Jan., 1967], No. 6998/67. Heading C5E. Olefinic polymerization feeds are freed from impurities containing acetylenic or plurality of olefinic bonds by selective hydrogenation in the presence of a catalyst comprising Cd or a compound thereof, in free or combined form, deposited on Al 2 O 3 . In -examples, acetylene is removed from mixed gases containing inter alia ethylene or ethylene and propylene. |
