Thermal Decomposition of 2-Bromopropene, and 2-Chloropropene

Published

March 24, 2003

Author(s)

K Roy, Iftikhar A. Awan, Jeffrey A. Manion, Wing Tsang

Abstract

2-Chloropropene and 2-bromopropene have been decomposed in single pulse shock tube experiments. The only products under all conditions are propyne and allene. The high pressure rate expressions arek(2-BrC₃H₅ => propyne/allene + HBr) =10^14.12 exp(-3283OK/T) s^-1k(2-CIC₃H₅ => propyne/allene + HCI) =10^14.8 exp(-34200K/T) s^-1in the temperature range 1100 to 1250 K and pressures of 150 to 800 kPa. The propyne to allene ratios are 1.8 and 1.6 for the brominated and chlorinated compounds respectively with minimal temperature dependence. Results arecompared with those for the alkyl compounds and ab-initio calculations on 2-chloropropene. Differences in energy transfer efficiencies for 2-chloropropene and 4-methylcyclohexene decompositions are explored.

Citation

Physical Chemistry Chemical Physics

Volume

5

Issue

No. 9

Pub Type

Journals

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Keywords

1, 2-elimination, bromo-propene, chloropropene, shock tube, thermal decomposition

Citation

Roy, K. , Awan, I. , Manion, J. and Tsang, W. (2003), Thermal Decomposition of 2-Bromopropene, and 2-Chloropropene, Physical Chemistry Chemical Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=831844 (Accessed October 18, 2025)