Kinetic Studies for the Reaction of syn-CH3CHOO with CF3CH═CH2

Xiaohu Zhou; Yiqiang Liu; Yang Chen; Xinyong Li; Chunlei Xiao; Wenrui Dong; Xueming Yang

doi:10.1021/acs.jpca.0c03534

Kinetic Studies for the Reaction of syn-CH₃CHOO with CF₃CH═CH₂

J Phys Chem A. 2020 Jul 30;124(30):6125-6132. doi: 10.1021/acs.jpca.0c03534. Epub 2020 Jul 17.

Authors

Xiaohu Zhou^{1

2

3}, Yiqiang Liu^{3

4}, Yang Chen^{3

5

6}, Xinyong Li¹, Chunlei Xiao³, Wenrui Dong³, Xueming Yang^{3

7}

Affiliations

¹ Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China.
² Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, 116024, China.
³ State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.
⁴ Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian, 116024, China.
⁵ Key Laboratory of Chemical Lasers, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.
⁶ University of Chinese Academy of Sciences, Beijing, 100049, China.
⁷ Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.

PMID: 32614580
DOI: 10.1021/acs.jpca.0c03534

Abstract

Hydrofluoroolefins (HFOs, C_xF_2x+1CH═CH₂) have great potential to replace hydrofluorocarbons (HFCs) as refrigerants. Here the kinetics for the reaction of syn-CH₃CHOO with CF₃CH═CH₂ (HFO-1243zf), the simplest of HFOs, have been studied in a flash photolysis flow reactor at a total pressure of 50 Torr, by using the OH laser-induced fluorescence (LIF) method. The bimolecular reaction rate coefficients were measured at temperatures ranging from 283 to 318 K. A weak positive temperature dependence was observed, with an activation energy of 1.41 ± 0.12 kcal mol^-1. At 298 K, the measured rate coefficient was (2.42 ± 0.51) × 10^-14 cm³ s^-1, in the vicinity of the previously reported upper limit value for the reaction of CH₂OO with CF₃CH═CH₂.