化学激波管测定环氧乙烷异构化生成乙醛的速率常数的研究

The Rate Constant Determination for The Isomerization of Ethylene Oxide to Acetaldehyde by Chemical Shock Tube

环氧乙烷在高温下产生非常复杂的反应,其中包括多步自由基反应。环氧乙烷异构化生成乙醛是该复杂反应的第一步。本文应用化学激波管成功地测定了这一步反应在1064-1166K之间的反应速率常数。k_环氧乙烷=A exp(-2.48×10~5/RT)s^(-1),其中指前因子A=10^(13.8)s^(-1),活化能E=2.48×10~2kJ·mol^(-1)。

Ethylene oxide can undergo very complicated reaction at high temperature. The isomerization of ethylene oxide to acet aldehyde is the first step of all these elementary reactions. This paper describes the determination of kinetic parameters for this first step by chemical shock tube without radical disturbance. The results show that the rate constant may be expressed as k=10^(13.8) exp (-2.48×10~5/RT)s^(-1) E=2.48×10~2kJ·mol^(-1).