A shock tube study of CH3OH + OH -> Products using OH laser absorption

作者：Zaczek Luke T^*; Lam King Yiu; Davidson David F; Hanson Ronald K

来源：Proceedings of the Combustion Institute, 2015, 35(1): 377-384.

DOI：10.1016/j.proci.2014.05.051

• Methanol
• Shock tube
• Hydroxyl
• Kinetics
• Reaction rate

The rate coefficient for the reaction of methanol (CH3OH) with the hydroxyl (OH) radical was determined in reflected shock wave experiments at temperatures of 961-1231 K and pressures of 1.18-1.48 atm. Pseudo-first order reaction conditions were achieved with mixtures of CH3OH and tert-butyl hydroperoxide (TBHP) diluted in argon. Rapid thermal decomposition of TBHP at high temperatures was used as a fast OH radical source, and OH time-histories were measured using laser absorption of OH radicals near 306.7 nm. The rate coefficient of the title reaction was found from best-fit comparison of simulated OH profiles with measured data, using simulations from the Wang et al. USC-Mech II reaction mechanism (2007). A detailed uncertainty analysis was performed, with estimated uncertainties of -10%/+ 17% at 961 K and -12%/+ 18% at 1231 K. The current results agree well with the results of Vandooren and Van Tiggelen (1981), Hess and Tully (1989), and Xu and Lin (2007). The three-parameter Arrhenius expression k(1)(210-1231 K) = 5.71 x 10(4) T-2.62 exp(343/T[K]) cm(3) mol(-1) s(-1) is recommended from a fit to the combined data of Hess and Tully (1989), Jimenez et al. (2003), Dillon et al. (2005), and the current work.

• 出版日期2015