Kinetic study of the CN radical reaction with 2‐methylfuran
Kinetic study of the CN radical reaction with 2‐methylfuran
复制标题
CN自由基与2-甲基呋喃反应的动力学研究
DOI:
10.1002/kin.21403
复制
发表时间:
2020
影响因子:
1.5
通讯作者:
Goulay, Fabien
中科院分区:
文献类型:
--
作者:
Lee, James;Caster, Kacee;Maddaleno, Trey;Donnellan, Zachery;Selby, Talitha M.;Goulay, Fabien
The gas phase reaction of the ground state cyano‐radical (CN (X2∑+)) with 2‐methylfuran (2‐MF) is investigated in a quasi‐static reaction cell at pressures ranging from 2.2 to 7.6 Torr and temperatures ranging from 304 to 440 K. The CN radicals are generated in their ground electronic state by pulsed laser photolysis of gaseous cyanogen iodide (ICN) at 266 nm. Their concentration is monitored as a function of reaction time using laser‐induced fluorescence at 387.3 nm on the B2∑+(ν′ = 0) ← X2∑+(ν″ = 0) vibronic band. The reaction rate coefficient is found to be rapid and independent of pressure and temperature. Over the investigated temperature and pressure ranges, the rate coefficient is measured to be 2.83 (± 0.18) × 10−10cm3molecules s−1. The enthalpies of the stationary points and transition states on the CN + 2‐MF potential energy surface are calculated using the CBS‐QB3 computational method. The kinetic results suggest the lack of a prereactive complex on the reaction entrance channel with either a very small or nonexistent entrance energy barrier. In addition, the potential energy surface calculations reveal only submerged barriers along the minimum energy path. Based on comparisons between previous CN reactions with unsaturated hydrocarbons, the most likely reaction pathway is CN addition onto one of the unsaturated carbons followed by either H or methyl elimination. The implications for the transformation of biomass‐derived fuels in nitrogen‐rich flames is discussed.
登录
查看更多内容
DOI:
10.1021/acs.jpca.7b10382
发表时间:
2018
期刊:
The journal of physical chemistry. A
影响因子:
--
作者:
E. Carrasco;K. Smith;G. Meloni
通讯作者:
G. Meloni
影响因子:
56.9
作者:
D. Yang;M. Lin
通讯作者:
M. Lin
影响因子:
4.4
作者:
N. Lamoureux;C. Western;X. Mercier;P. Desgroux
通讯作者:
P. Desgroux
影响因子:
7.9
作者:
Cooke, Ilsa R.;Gupta, Divita;Sims, Ian R.
通讯作者:
Sims, Ian R.
影响因子:
2.9
作者:
Fathi, Yasmin;Meloni, Giovanni
通讯作者:
Meloni, Giovanni