Patent ID: 8241600
Filing Date: 2012-08-14
Classification: B01J,C01B,Y02P

Abstract:
1. A method of catalytically reforming a reactant gas mixture, comprising: providing a reactant gas mixture comprising hydrocarbons and an oxidant; providing a pyrochlore material catalyst comprised of a pyrochlore having the composition A B is a tetravalent ion of an element in the pyrochlore, where B is selected from the group consisting of Ti, Cr, Mn, Zr, Mo, Os, Ir, Si, Ge, Sn, and Pb, and where B has a B ionic radius, where the B ionic radius is an ionic radius of B in the tetravalent state, B′ is a trivalent ion or a tetravalent ion of element in the pyrochlore, where B′ is selected from the group consisting of Rh, Ru, Ni, Pt, Os, Co, Ir, Pd, and Cu, and where B′ is an element different from B, B″ is a divalent ion, a trivalent ion, of a tetravalent ion of an element in the pyrochlore, where B″ is selected from the group consisting of Mg, Ca, Sr, Ba, Y, Ce, Re, Cr, Ti, Zr, Ni, Co, V, and Mo, and where B″ is an element different from B and different from B′, and where either an ionic radius of B″ in the divalent state is greater than the ionic radius of B, or an ionic radius of B″ in the trivalent state is greater than the ionic radius of B, or an ionic radius of B″ in the tetravalent state is greater than the ionic radius of B and, where an average ionic radius ratio of ions in the A-site to the B, B′ and B″ ions in the B-site is between 1.46 and 1.80; and contacting the reactant gas mixture with the pyrochlore material catalyst; and maintaining the reactant gas mixture and the pyrochlore material catalyst at conditions of temperature, pressure and gas flow rate during the contacting to promote a catalytic reforming process and produce a gaseous mixture comprised of at least hydrogen and carbon monoxide.