Cyclic catalytic upgrading of chemical species using metal oxide materials

Patent · Tue Nov 02 00:00:00 EDT 2010

OSTI ID:1014960

White, James H ^[1]; Schutte, Erick J ^[2]; Rolfe, Sara L ^[3]

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1. Boulder, CO
2. Thornton, CO
3. Loveland, CO

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) Ce.sub.xB.sub.yB'.sub.zB''O.sub..delta., wherein B=Ba, Sr, Ca, or Zr; B'=Mn, Co, or Fe; B''=Cu; 0.01<0.99; 0<0.6; 0<0.5; and 1<.delta.<2.2; (b) Sr.sub.vLa.sub.wB.sub.xB'.sub.yB''.sub.zO.sub..delta., wherein B=Co or Fe; B'=Al or Ga; B''=Cu; 0.01<1.4; 0.1<1.6; 0.1<1.9; 0.1<0.9; 0<2.2; and 3<.delta.<5.5).

• Research Organization: Eltron Research & Development (Boulder, CO)
• Sponsoring Organization: USDOE
• DOE Contract Number: FG02-05ER84200; FG02-04ER83936
• Assignee: Eltron Research & Development (Boulder, CO)
• Patent Number(s): 7,824,574
• Application Number: US Patent Application 11/858,564
• OSTI ID: 1014960
• Country of Publication: United States
• Language: English