| abstract |
Dehydrogenatable hydrocarbons are dehydrogenated by contacting them at dehydrogenation conditions with a multicomponent catalytic composite comprising a combination of catalytically effective amounts of a platinum group component, a tin component, a germanium component and an alkali or alkaline earth component with a porous carrier material. A specific example of the catalytic composite disclosed herein is a combination of a platinum group component, a tin component, a germanium component and an alkali or alkaline earth component with a porous carrier material wherein substantially all of the platinum group component is present as the elemental metal and substantially all of the germanium component is present in an oxidation state above the elemental metal, wherein the composite contains about 0.01 to about 2 wt. % of platinum group metal, about 0.01 to about 5 wt. % tin, about 0.01 to about 5 wt. % germanium and about 0.01 to about 5 wt. % alkali or alkaline earth metal. |