| 摘要 |
1,222,597. Dehydrogenating alkenes. PHILLIPS PETROLEUM CO. 3 Dec., 1968 [4 Dec., 1967], No. 57364/68. Heading C5E. Alkenes are oxidatively dehydrogenated in the presence of a phosphoric acid or tin oxide catalyst containing from 6 x 10<SP>-6</SP> to 2À5 x 10<SP>-2</SP> grams of phosphorus per square metre of surface area of the tin oxide. The process is illustrated by conversion of butene-2 to butadiene. |
