| 摘要 |
1,216,509. Dehydrogenating hydrocarbons. DOW CHEMICAL CO. 2 Jan., 1968 [9 Jan., 1967], No. 300/68. Addition to 1,100,088. Heading C5E. The process of parent Specification for dehydrogenating hydrocarbons to produce vinyl monomers in the presence of steam and a selfregenerative metal oxide-containing catalyst through which is passed an electric current, is improved by using as the catalyst a mixture comprising at least 50 wt. per cent of chromium oxide together with at least one of iron oxide, zinc oxide and magnesium oxide. |
