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A methyl free radical source for use in surface studies

1992; American Institute of Physics; Volume: 63; Issue: 8 Linguagem: Inglês

10.1063/1.1143240

1527-2400

Xiang-Dong Peng, R. Viswanathan, George H. Smudde, Peter C. Stair,

Catalysis and Oxidation Reactions

A methyl radical source has been developed for use in high vacuum. Methyl radicals are produced through azomethane pyrolysis in a tubular reactor located inside an ultrahigh vacuum chamber. Other gas products include nitrogen from azomethane pyrolysis, and methane, ethane plus hydrogen from the reactions of methyl radicals on the walls of the reactor. Methyl yields as high as 42% have been observed.