Combustion catalysts containing binary oxides and processes...

Details Combustion catalysts containing binary oxides and processes... Combustion catalysts containing binary oxides and processes...

B - Operations, Transporting

01

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B01J 23/56 (2006.01) B01J 23/63 (2006.01) B01J 23/90 (2006.01) B01J 38/12 (2006.01) C01G 55/00 (2006.01) F23R 3/40 (2006.01)

Patent

CA 2108031

2108031 9218232 PCTABS00016 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, M2O3.PdO (e.g., La2O3.PdO) or 2M2O3.PdO, wherein in each case M is La, Nd or Sm. A process of combustion gaseous carbonaceous fuels includes contacting a catalyst as described above under combustion conditions, e.g. 925 ·C to 1650 ·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 M2O3.PdO catalyst is also provided for.

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