OXYGEN CARRIER MATERIALS INCLUDING IRON AND ONE OR MORE ADDITIONAL METALS, AND METHODS OF MANUFACTURING THERE

Abstract

The oxygen carrier may include a first composition. At least 95% by weight of the first composition may consist of: from 0.001 parts per mole to 0.999 parts per mole of iron; from 0.001 parts per mole to 0.999 parts per mole of a combination of one or more of manganese, cerium, cobalt, copper, nickel, or zinc; from 0.04 parts per mole to 0.8 parts per mole of one or more alkali metals; from 0.02 parts per mole to 0.4 parts per mole of tungsten; from 0 parts per mole to 3 parts per mole of titanium; and from 1 part per mole to 10 parts per mole of oxygen. The sum of the parts per mole of iron and the parts per mole of the combination of one or more of manganese, cerium, cobalt, copper, nickel, or zinc may be equal to 1 part per mole.