Patent ID: 6787118
Filing Date: 2004-09-07
Classification: A62D,B01J,C01B

Abstract:
A method for selectively removing carbon monoxide from a gas containing hydrogen comprising:contacting said gas with a catalyst composition with the formula: nN/Ce1âˆ’(x+y+z)AxAâ€²yAâ€³zO2âˆ’&dgr;where A, Aâ€², Aâ€³ are independently selected from the group consisting of: Zr, Gd, La, Sc, Sr, Co, Cr, Fe, Mn, V, Ti, Cu and Ni; N is one or more members of the group consisting of: Pt, Pd, and Au;n is a weight percent between 0 and 25; x, y and z are independently 0 to 0.9; x+y+z is 0.1 to 0.9; and &dgr; is a number which renders the composition charge neutrals whereby the carbon monoxide in said gas is selectively removed.