Pressure Dependence and Kinetic Isotope Effects in the Absolute Rate Constant for Methoxy Radical Reacting with NO<sub>2</sub>
作者:JIAJUE CHAI、THEODORE S. DIBBLE
DOI:10.1002/kin.20865
日期:2014.9
the kinetics for the reaction CH3O• + NO2 in N2 bath gas. The rate constants are well‐fit by the Troe expression over the temperature (250–335 K) and pressure range (30–700 Torr) investigated. The termolecular rate constant is given by cm6 molecule−2 s−1, and the rate constant at the high‐pressure limit is given by cm3 molecule−1 s−1. We also studied the kinetics of the reaction of CD3O• + NO2 as a
我们已经研究了N 2浴气体中CH 3 O•+ NO 2反应的动力学。在所研究的温度(250–335 K)和压力范围(30–700 Torr)内,Troe表达式可以很好地拟合速率常数。分子速率常数由cm 6分子-2 s -1给出,而高压极限时的速率常数由cm 3分子-1 s -1给出。我们还研究了在与CH 3相似的条件下,CD 3 O•+ NO 2反应动力学与温度和压力的关系。O•+ NO 2。所得的低压和高压极限速率常数分别为cm 6分子-2 s -1和cm 3分子-1 s -1。随着接近高压极限,两个同位素分子的速率常数彼此密切跟踪。目前的结果与大多数以前在295 K的压力范围内得出的结果一致,但是在温度依赖性方面存在很大分歧。