Cyclic catalytic upgrading of chemical species using metal...

Details Cyclic catalytic upgrading of chemical species using metal... Cyclic catalytic upgrading of chemical species using metal...

2007-09-20

2010-11-02

Nguyen, Ngoc-Yen M (Department: 1793)

Compositions

Gaseous compositions

Carbon-oxide and hydrogen containing

C423S213200, C423S219000, C423S418200, C423S648100, C423S650000, C502S029000, C502S030000, C502S031000, C502S032000, C502S039000, C502S051000, C502S052000, C502S053000, C095S138000

Reexamination Certificate

active

07824574

ABSTRACT:
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″Oδ, 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<δ<2.2; (b) SrvLawBxB′yB″zOδ, 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<δ<5.5).

REFERENCES:
patent: 4607021 (1986-08-01), Corbin et al.
patent: 5714091 (1998-02-01), Mazanec et al.
patent: 6143203 (2000-11-01), Zeng et al.
patent: 6641626 (2003-11-01), Van Calcar et al.

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