Journal of the Chemical Society - Faraday Transactions p. 1757 - 1762 (1990)
Update date:2022-08-11
Topics:
Frost, Michael J.
Smith, Ian W. M.
The kinetics of the reactions of CH3O and C2H5O radicals with NO have been studied using pulsed laser photolysis to create the radicals from the corresponding alkyl nitrite and time-resolved, laser-induced fluorescence to observe the decay of the radical concentration.For the CH3O + NO reaction, rate constants have been determined at four temperatures between 296 and 573 K and over a range of total pressures up to 125 Torr using Ar and CF4 as diluent gases.The results clearly indicate competition between association to CH3ONO and reaction to H2CO + HNO.The experimental results are fitted well by an extended Lindemann-Hinshelwood mechanism, with values of the limiting high- and low-pressure rate constants of 3.6 (T/298)E-0.6*10E-11cm3 molecule-1s-1 and 1.35(T/298)E-3.8*10E-29 cm6 molecules-2s-1 (the latter being the value that the association rate constant would have in the absence of the rearrangment channel to CH3O + HNO).The rate constant for this last channel in the limit of low pressure is found to be almost independent of temperature and is fitted fairly well by 5.0(T/298)E-0.6*10E-12 cm3 molecule-1 s-1.The rate of the reaction between C2H5O and NO at 298K is found to be the same in the presence of 15 and 100 Torr of Ar, and the measurements yieled a rate constant of (4.4+/-0.4)*10E-11 cm3 molecule-1 s-1.
View Morewebsite:http://www.hope-chem.com
Contact:86-21-58090396-805
Address:Floor 4, Building 5, No.588 Tianxiong Road, Zhoupu International Medical Zone, ShangHai, China
website:http://www.antaibio.com
Contact:0086-21-65663057
Address:Room 2108, Building 2，No. 489 Zhengli Road，200433
Shandong Xinke Petrochemical Co., Ltd.
Contact:+86-546-7277016
Address:Gudao Industrial Park, Hekou District, Dongying, Shandong Province, China
Wuhan Better Organic Technology Inc.
Contact:13307163183
Address:Wuhan Economic&Technology Development Zone, Hubei
Tianjin Tongde Biological Technology Co., Ltd.
Contact:86-22-23309138
Address:Room 402, bulidingE3 Detection certification park, XiQingDistrict, Tianjin City
Doi:10.1021/op7001535
(2007)Doi:10.1002/aoc.5965
(2020)Doi:10.1021/acs.jmedchem.6b01516
(2017)Doi:10.1016/0040-4020(76)85053-3
(1976)Doi:10.1039/c8ob02469c
(2018)Doi:10.1016/j.ejmech.2018.12.065
(2019)
