Reactions of oxygenated radicals in the gas phase. Part 16. Decomposition of isopropoxyl radicals

Abstract

The photo-oxidation of trans-2,2′-azopropane has been studied between 333 and 434 K. The main products are propan-2-ol, isopropyl hydroperoxide, and acetone. Acetaldehyde becomes an increasingly important product as the temperature and pressure are increased. By altering the total pressure of the system, using nitrogen as diluent, quantitative data for the rate of decomposition of isopropoxyl radicals may be obtained. k₁₁ varies markedly with pressure between 20 and 760 Torr in this temperature regime. (CH₃)₂CHO·(+M)→ CH₃CHO +ĊH₃(+M)(11)