Formation of Gas-Phase Methylallyl Radicals during the Oxydation of 1-Butene and Isobutylene over Bismuth Oxide

Article abstract of DOI:10.1021/j100297a024

Using a matrix isolation-electron spin resonance (MIESR) technique it has been shown that Bi2O3 is capable of generating gas-phase 1-methylallyl and 2-methylallyl radicals from 1-butene and isobutylene, respectively.Previous results had suggested that the rate of surface-generated gas-phase radical formation over this material was governed by C-H bond strength differences only.These new results, however, indicate that other factors such as the availability of the abstractable hydrogen atoms and the reaction stereochemistry also may be important in determining the amount of gas-phase radicals produced.