In a CO-O2 stoichiometric mixture, the kinetic parameters, reaction order, rate constant and activation energy of CO oxidation over a Pt/SnO2 catalyst have been measured using a fixed bed flow reactor near 0~ The results show that it is a firstorder reaction. The activation energy of CO oxidation over Pt/SnO2 prepared with SnOz calcined at 300~ was approximately 21 kJ/mol. The activation energy of CO oxidation over Pt/SnO2 changed slowly with SnOz calcination temperature above 400~ and reached approximately 45 kJ/mol.

The catalytic combustion of various organic compounds has been investigated over noble and non-noble metal catalysts using a fixed bed. It was concluded that the activity order of different organic compounds on a noble metal catalyst is toluene > 2-butanone > benzene > n-heptane = isopropyl alcohol > acrylonitrile > cyclohexane. On non-noble metal catalyst, it is isopropyl alcohol > 2obutanone > acrylonitrile > toluene> n-neptune > cyclohexane > benzene. In order to compare the thermal stability of catalysts, the catalytic reaction of toluene has been studied over noble and non-noble metal catalysts which were calcined at various temperatures up to 900~ for 3 h.