Kinetic studies of the catalytic oxidation of methane. 2. Methyl radical

6564

J . Phys. Chem. 1991, 95,6564-6568

Kinetic Studies of the Catalytic Oxidation of Methane. 2. Methyl Radical Recomblnatlon and Ethane Formatlon over 1% Sr/La,Os Y. Feng, J. Niiranen, and D. Gutman* Department of Chemistry, Catholic University of America, Washington, D.C. 20064 (Received: December 28, 1990; In Final Form: March 6, 1991)

The early stages of the catalytic oxidative conversion of methane to ethane over l%Sr/La203have been studied at 1086 K, using a heatable tubular flow reactor (containing the catalyst) coupled to a photoionization mass spectrometer. Temporally resolved concentrations of CH3,C2&, and C2H4 were recorded along the catalyst bed. Conditions used resulted in negligible loss of the reactants (CHI and 02,