PROCESS AND COMPOSITION FOR SEPARATION OF OXYGEN FROM AIR USING PR-CE OXIDES AS THE CARRIER

摘要

Oxide solid solutions of praseodymium and cerium are useful as the oxygen carrier in a reversible cyclic oxidation-reduction process for separating oxygen from air. The adverse affects on redox rates of contaminants in the air, such as CO2 and/or H2O are substantially eliminated by incorporating a surface dopant such as silver into the praseodymium-cerium oxide.