B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/02 (2006.01) B01D 53/56 (2006.01) B01D 53/86 (2006.01) B01J 20/34 (2006.01) C01B 3/24 (2006.01) C01B 3/40 (2006.01) C01B 15/029 (2006.01) C10J 3/00 (2006.01)
Patent
CA 2663977
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) CexByB'zB''Od, wherein B = Ba, Sr, Ca, or Zr; B' = Mn, Co, or Fe; B''= Cu; 0.01< x <0.99; 0< y <0.6; 0< z <0.5; and 1 < .delta. <2.2; (b) SrvLawBxB'yB''zOd, wherein B = Co or Fe; B' = Al or Ga; B'' = Cu; 0.01< v <1.4; 0.1< w <1.6; 0.1< x <1.9; 0.1< y <0.9; 0< z <2.2; and 3< .delta. <5.5).
La présente invention concerne des procédés comprenant la mise en contact en alternance d'un catalyseur oxygéné avec une substance réductrice, ou une pression partielle plus basse d'un gaz oxydant, suivi d'un contact avec le gaz oxydant ou une pression partielle supérieure du gaz oxydant, permettant ainsi la réduction alternée du catalyseur suivie de sa régénération vers un état oxygéné. Selon certains modes de réalisation, le catalyseur oxygéné comporte une des formules suivantes: (a) CexByB'zB''Od, dans laquelle B = Ba, Sr, Ca, ou Zr; B' = Mn, Co, ou Fe; B''= Cu; 0.01< x <0.99; 0< y <0.6; 0< z <0.5; et 1 < .delta. <2.2; (b) SrvLawBxB'yB''zOd, dans laquelle B = Co ou Fe; B' = Al ou Ga; B'' = Cu; 0.01< v <1.4; 0.1< w <1.6; 0.1< x <1.9; 0.1< y <0.9; 0< z <2.2; et 3< .delta. <5.5).
Rolfe Sara L.
Schutte Erick J.
White James H.
Eltron Research & Development Inc.
Ridout & Maybee Llp
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