Catalysts contg. group VIb metal and oxide on alumina - for conversion of hydrocarbons into gases contg. hydrogen and carbon monoxide

摘要

Catalysts for the conversion of hydrocarbons (esp. higher hydrocarbons) into an H2- and CO- contg. gas mixt. by reaction with an oxygen-contg. gas are prepd. by (a) prepg. a support material consisting of gamma-Al2O3 and/or eta-Al2O3 and delta-Al2O3, having an alkali metal content of 0.2 (pref. 0.04) wt. % and a pore vol. of =0.5(pref. 0.65-0.8) cm3/g. by calcining gamma-Al2O3 or eta-Al2O3 or a mixt. thereof; (b) mixing or impregnating the support material with at least one thermally decomposable and/or reducible cpd. of at least one Gp VIa metal (pref. Mo); and (c) calcining the prod. and heating it in a reducing atmost. so that the metal cpd. is converted into an active metal/metal oxide component. The prod. gas can be used in oxo and hydroformylation processes, as a reducing gas, e.g. for the direct redn. of iron ore (Midrex process), and, when it also contains CH4 as a combustible gas for use in domestic and industrial burners and engines (e.g. IC engines.) The catalysts suppress coke formation, give high conversions (80-100%) and have a long life.