Mechanism and Rate Constants for 1,5-Butadiene Decomposition

Published

May 1, 2000

Author(s)

Wing Tsang, V Mokrushin

Abstract

The data on the decomposition of 1,3-butadiene have been analyzed. The numerous isomerization processes that have recently been proposed as additional channels for decomposition have been considered. Energy transfer effects have been taken into account through the solution of the time dependent master equation. We confirm recent supposition that direct formation of ethylene and acetylene is a major reaction channel. The isomerization to 1,2-butadiene and its subsequent decomposition to form propargyl and methyl is the next most important process. Almost no vinyl radicals are produced. The formation of the isomerization products, in contrast to those from the initial reactant, is generally characterized by long transients before the attainment of a steady state. Standard methods of treating processes where such reactions are important must be carefully analyzed. The calculations are calibrated with experimental results. It proved not to be possible to fit simultaneously all the observations. Rate expressions for the major decomposition and isomerization channels are presented.

Citation

Proceedings of the Combustion Institute

Volume

28

Issue

Pt. 2

Pub Type

Journals

Keywords

1, 3 butadiene, decomposition, energy transfer, high temperature, isomegatron, master equation, unimolecule

Citation

Tsang, W. and Mokrushin, V. (2000), Mechanism and Rate Constants for 1,5-Butadiene Decomposition, Proceedings of the Combustion Institute (Accessed April 23, 2024)