Selective oxidation of hydrogen

Details Selective oxidation of hydrogen Selective oxidation of hydrogen

C - Chemistry, Metallurgy

07

C

260/700.4, 260/6

C07C 5/333 (2006.01) C07C 5/48 (2006.01) C07C 15/46 (2006.01) B01J 23/62 (2006.01)

Patent

CA 1240709

"SELECTIVE OXIDATION OF HYDROGEN" ABSTRACT Dehydrogenatable hydrocarbons may be subjected to a dehydro- genation reaction in which the hydrocarbons are treated with a dehydro- genation catalyst comprising a modified iron compound in the presence of steam in a multicatalyst bed system. The reaction mixture containing un- converted hydrocarbons, dehydrogenated hydrocarbons, hydrogen and steam is then contacted with an oxidation catalyst whereby hydrogen is selec- tively oxidized in preference to the unconverted and dehydrogenated hydrocarbons. The selective oxidation of hydrogen will improve the combustion thereof and supply the necessary heat which is required for a subsequent dehydrogenation treatment. The selective oxidation catalyst which is used will comprise a noble metal of Group VIII of the Periodic Table and, if desired, a metal of Group IA or IIA of the Periodic Table composited on a porous inorganic support. The inorganic support will have been calcined prior to impregnation thereof with metallic components at a temperature in the range of from about 900° to about 1500°C in the absence or presence of steam to provide a catalyst which possesses increased stability and activity when compared to prior catalysts.

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