Patent ID: 8148583

Claim:
An oxygen ion transport membrane process comprising: (a) contacting a heated oxygen-containing gas with a reactive solid material, the heated oxygen-containing gas comprising oxygen and one or more contaminant compounds wherein at least one of the one or more contaminant compounds in the heated oxygen-containing gas is CrO 2 (OH) 2 , Si(OH) 4 , WO 2 (OH) 2 , CrO) 3 , oxides of molybdenum, or oxy-hydroxides of molybdenum, the reactive solid material provided as a deposit on a support wherein the reactive solid material comprises one or more compounds selected from the group consisting of magnesium oxide, calcium carbonate, strontium carbonate, zinc oxide, strontium oxide, barium oxide, barium carbonate, and alkaline-earth-containing perovskites, reacting the one or more contaminant compounds in the heated oxygen-containing gas with the reactive solid material under reaction conditions sufficient to react the one or more contaminant compounds with the reactive solid material thereby forming a contaminant-depleted oxygen-containing gas and reacted solid material; (b) contacting the contaminant-depleted oxygen-containing gas with a first surface of a membrane comprising mixed conducting multicomponent metallic oxide, and transporting oxygen through the membrane to a second surface of the membrane to provide transported oxygen.