| 摘要 |
<p>A novel catalyst which is carrier-free or applied to certain carriers comprises (a) at least one oxide of one of the elements Bi, Ce, Co, Cr, Cu, Fe, In, Mn, Mo, Nb, Sb, Sn and V which assume a plurality of oxidation states (b) at least one metal or noble metal which is selected from Ag, Au, Co, Cu, Ir, Ni, Os, Pd, Pt, Re, Rh and Ru and which differs from the above elements and optionally (c) an alkali metal, alkaline earth metal or rare earth metal in the form of an oxide or of a compound with another catalyst component, as is obtained when the metal or noble metal (b) has been applied as a sol to the oxide catalyst (a) which is carrier-free or applied to a carrier. The novel catalyst can be used for the catalytic oxidative dehydrogenation of a dehydrogenatable organic compound to an olefinically unsaturated compound by means of oxygen transfer by an oxygen carrier which has been oxidized beforehand and acts as a catalyst, in the absence of molecular oxygen, the catalyst being regenerated after use.</p> |
