The high activity of palladium for the catalytic reduction of nitrous oxide by alkanes larger than methane

The reduction of N 2O by C 1 to C 4 alkanes over Pd/SiO 2 under stoichiometric conditions has been investigated. The reaction using propane is much faster than the corresponding reaction over silica-supported Pt or Rh. Isobutane reacts with N 2O at a similar rate to propane while ethane is somewhat...

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Bibliographic Details
Published in:Catalysis communications 2004-10, Vol.5 (10), p.625-629
Main Authors: Cant, Noel W., Chambers, Dean C., Yoshinaga, Yusuke
Format: Article
Language:English
Subjects:
Ethane
Isobutane
Methane
Nitrous oxide reduction
Pd/SiO 2
Propane
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Summary:The reduction of N 2O by C 1 to C 4 alkanes over Pd/SiO 2 under stoichiometric conditions has been investigated. The reaction using propane is much faster than the corresponding reaction over silica-supported Pt or Rh. Isobutane reacts with N 2O at a similar rate to propane while ethane is somewhat less reactive and methane unreactive except transiently after oxidising pretreatments. The difference in activity between alkanes correlates with the C–H bond strength. The N 2O/propane reaction is quenched by low concentrations of O 2 but activity recovers immediately it is removed. Water also inhibits indicating that part of the palladium is oxidised under reaction conditions.
ISSN:1566-7367
1873-3905
DOI:10.1016/j.catcom.2004.08.004