PLATINUM-ALKALI/ALKALINE-EARTH CATALYST FORMULATIONS FOR HYDROGEN GENERATION

摘要

A method and catalysts and fuel processing apparatus for producing a hydroge n- rich gas, such as a hydrogen-rich syngas are disclosed. According to the method a CO-containing gas, such as a syngas, contacts a water gas shift catalyst in the presence of water, preferably at a temperature of less than about 450~C, to produce a hydrogen-rich gas, such as a hydrogen-rich syngas. Also disclosed is a water gas shift catalyst comprising: a) Pt, its oxides o r mixtures thereof; b) at least one of Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, thei r oxides and mixtures thereof; and c) at least one of Sc, Y, Ti, Zr, V, Nb, Ta , Cr, Mo, W, Mn, Fe, Co, Ir, Ni, Pd, La, Ce, Pr, Nd, Sm, Eu, their oxides and mixtures thereof. The WGS catalyst may be supported on a carrier, such as an y one member or a combination of alumina, zirconia, titania, ceria, magnesia, lanthania, niobia, yttria and iron oxide. Fuel processors containing such water gas shift catalysts are also disclosed.