阿伦尼乌斯公式k=A·exp(-Ea/RT)中,k、R、T、Ea分别是化学反应速率常数、摩尔气体常数、反应温度及活化能,式中的A称为指前因子。它是一个只由反应本性决定而与反应温度及系统中物质浓度无关的常数,与k具有相同的量纲。A是反应的重要动力学参量之一。
These data inflect that the effect of microwave radiation on the pre-exponential factor of Arrhenius equation does actually exist,and a threshold value of energy density should be existed.
反映出能量密度确实影响蔗糖水解的阿氏方程的指前因子项,而且能量密度对指前因子项的影响存在阈值。
参考来源 - 微波辐射对蔗糖水解反应指前因子影响的研究·2,447,543篇论文数据,部分数据来源于NoteExpress
随着转化率的增加,活化能和指前因子也随着增加。
With the increasing of conversion, activation energies and pre-exponential factors were also increased.
分析了其绝热分解的过程,计算了表观活化能、 指前因子和反应热等参数。
Thermal decomposition results were analyzed, and kinetics parameters such as apparent activation energy, pre-exponential factor and reaction heat were calculated.
结果表明:反应物的粒度对反应的速率常数、 反应级数、 表观活化能和指前因子均有较大的影响;
The results show that there are obvious effects of the sizes on the rate constant, the reaction order and the activation energy;
The pre-factor embodies all the electrostatics.
指前因子校正了所有的静电力。
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