Combustion process using catalysts containing binary oxides

Details Combustion process using catalysts containing binary oxides Combustion process using catalysts containing binary oxides

1991-04-12

1995-01-03

Konopka, Paul E.

Combustion

Process of combustion or burner operation

In a porous body or bed, e.g., surface combustion, etc.

502 38, 502262, 502263, 502302, 502303, 502304, 502339, 502355, 60 3902, 60723, 4232135, F23D 340, B01J 3812, B01J 2310, B01J 2356

Patent

active

053781422

ABSTRACT:
A catalyst composition containing one or more binary oxides of palladium and rare earth metal such as Ce, La, Nd, Pr and/or Sm. The catalyst composition is used for the catalytic combustion of gaseous combustion mixtures of oxygen and carbonaceous fuels such as methane, e.g., a natural gas/air combustion mixture. Specific preferred binary oxides may be, for example, M.sub.2 O.sub.3.sup.. PdO (e.g., La.sub.2 O.sub.3.sup.. PdO) or 2M.sub.2 O.sub.3.sup.. PdO, wherein in each case M Is La, Nd or Sm. A process of combusting gaseous carbonaceous fuels includes contacting a catalyst as described above under combustion conditions, e.g., 925.degree. C. to 1650.degree. C. and 1 to 20 atmospheres pressure, to carry out sustained combustion of the combustion mixture, including catalytically supported thermal combustion. Regeneration of over-temperatured M.sub.2 O.sub.3.sup.. PdO catalyst is also provided for.

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