Eltron Research & Development, Inc.

Erick J Schutte

James H White

Sara L Rolfe

Processes are disclosure which comprise alternately contacting an oxygen-carrying catalyst with a reducing substance, or a lower partial pressure of an oxidizing gas, and then with the oxidizing gas or a higher partial pressure of the oxidizing gas, whereby the catalyst is alternately reduced and then regenerated to an oxygenated state. In certain embodiments, the oxygen-carrying catalyst comprises at least one metal oxide-containing material containing a composition having the following formulas: (a) CeBB'B&#x2033;O, wherein B=Ba, Sr, Ca, or Zr; B&#x2032;=Mn, Co, and/or Fe; B&#x2033;=Cu; 0.01&#x3c;x&#x3c;0.99; 0&#x3c;y&#x3c;0.6; 0&#x3c;z&#x3c;0.5; (b) CeNiBO, wherein B=Zr, Ba, Ca, La, or K; 0.02&#x3c;x&#x3c;0.1; 0&#x3c;y&#x3c;0.1; and 0.02&#x3c;*&#x3c;0.15; and 1&#x3c;&#x3b4;&#x3c;2.2 and (c) coal ash either as a catalyst material itself or as a support for said unary or binary metal oxides.

Cyclic catalytic upgrading of chemical species using metal oxide materials

Processes are disclosure which comprise alternately contacting an oxygen-carrying catalyst with a reducing substance, or a lower partial pressure of an oxidizing gas, and then with the oxidizing gas or a higher partial pressure of the oxidizing gas, whereby the catalyst is alternately reduced and then regenerated to an oxygenated state. In certain embodiments, the oxygen-carrying catalyst comprises at least one metal oxide-containing material containing a composition having one of the following formulas: (a) CeBB'B&#x2033;O, wherein B=Ba, Sr, Ca, or Zr; B&#x2032;=Mn, Co, or Fe; B&#x2033;=Cu; 0.01&#x3c;x&#x3c;0.99; 0&#x3c;y&#x3c;0.6; 0&#x3c;z&#x3c;0.5; and 1&#x3c;&#x3b4;&#x3c;2.2; (b) SrLaBB&#x2032;B&#x2033;O, wherein B=Co or Fe; B&#x2032;=Al or Ga; B&#x2033;=Cu; 0.01&#x3c;v&#x3c;1.4; 0.1&#x3c;w&#x3c;1.6; 0.1&#x3c;x&#x3c;1.9; 0.1&#x3c;y&#x3c;0.9; 0&#x3c;z&#x3c;2.2; and 3&#x3c;&#x3b4;&#x3c;5.5).

Growing community of inventors

Thornton, CO, United States of America

Erick J Schutte