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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Rate Constant and Temperature Dependence for the Reaction of Hydroxyl Radicals with 2-Fluoropropane (HFC-281ea)
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Rate Constant and Temperature Dependence for the Reaction of Hydroxyl Radicals with 2-Fluoropropane (HFC-281ea)

机译：羟基自由基与2-氟丙烷（HFC-281ea）反应的速率常数和温度依赖性

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摘要

Relative rate experiments were used to measure the rate constant and temperature dependence of the reaction of OH radicals with 2-fluorpropane (HFC-281lea), using ethane, propane, and ethyl chloride as reference standards. Measurements were made using both infrared spectroscopy and gas chromatography(GC). Results from the two measurement techniques were in good agreement, with the GC data being more precise. The rate at 298 K for HFC-281lea, based on the GCD experiments, was found to be 5.7 * 10~(-13) cm~3/(molecule s), with Arrhenius A factor = 3.06 * 10~(12) cm~3/(molecule s) and E/R = 503 K. A previously described estimation technique, along with an improved method to estimate the Arrhenius parameters is used to predict a rate constant and temperature dependence for 2-fluoropropane, which is in good agreement with the experimental value. A prediction is also made for 1-fluoropropane, for which there are no data.
机译：相对速率实验以乙烷，丙烷和氯乙烷为参考标准，用于测量OH自由基与2-氟丙烷（HFC-281lea）反应的速率常数和温度依赖性。使用红外光谱法和气相色谱法（GC）进行测量。两种测量技术的结果非常吻合，GC数据更加精确。根据GCD实验，HFC-281lea在298 K下的速率为5.7 * 10〜（-13）cm〜3 /（分子），阿累尼乌斯A因子= 3.06 * 10〜（12）cm约3 /（分子s）和E / R = 503K。先前描述的估算技术以及一种改进的估算Arrhenius参数的方法可用于预测2-氟丙烷的速率常数和温度依赖性，这非常好与实验值吻合。还对没有数据的1-氟丙烷进行了预测。

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