| 摘要 |
1,131,984. Dehydrogenation catalysts. MONSANTO CO. 23 Dec., 1965 [28 Dec., 1964], No. 54543/65. Addition to 1,131,983. Heading B1E. An alumina support having a macropore volume of at least 0.05 cc. per gram is impregated with a solution of an alkali or alkaline earth metal compound, and thereafter further impregnated with a solution of a Group VIII precious metal compound to give a composition containing at least 0.01 % of alkali or alkaline earth metal and from 0.02 to 5% of precious metal. Specified alkali or alkaline earth metals are Li, Na, K, Rb, Cs, Be, Mg, Ca, Ba, Sr. The alumina may have special physical properties e.g. a surface area of at least 10 m<SP>2</SP>/gm. The catalyst may be dried and calcined at 300-600‹C. |
