指前因子

求出了该体系的反应速率常度k、表观活化能E及催化活化能Ec和指前因子A。

The values of reaction rate constant , apparent activation , catalytic activation energy and preexponential factor were obtained .

通过对试验数据的回归，求取了14个反应动力学速度常数k、14个反应活化能E和14个反应的指前因子。

14 reaction kinetics rate k , 14 reaction activation energy E and 14 frequency factors have been obtained by the regression of test data .

表观活化能（Eα）与指前因子（A）随着离子迁移数t（Li）~+的变化而作相应的变化。

The pseudo activation energies ( Ea ) and the pre-exponent constant ( ^ 4 ) changed with the variation of ion transference number ( f / / ) .

根据热分析数据，运用积分法和微分法计算得到配合物的热分解动力学参数：表观活化能E和指前因子A，从而推断出部分配合物脱水过程的动力学机理和机理函数。

According to thermal analysis data , the non-isothermal kinetic data ( E-the apparent activation energy , A-the pre-exponential factor ) were analyzed by means of integral and differential methods .

此外还求取了表面扩散指前因子Dso为1.85×10？

The pre-exponential factor Dso is 1.85 × 10 ?

模型求解采用了固定床反应器的实验数据，利用非线性最小二乘算法理论，用MATLAB编程求取了各反应温度下各集总的反应速率常数，进而回归求取了活化能和指前因子。

The experimental data for solving model obtained from a fixed bed micro-reactor and the reaction rate constants of every reaction temperature was evaluated by the nonlinear least square theory with MATLAB . Finally we solved the frequency factors and apparent activation energies .

根据过度态的观点，结合Redox机理假设，对烯烃在氧化物催化剂上选择性氧化反应的指前因子与活化能的补偿效应，反应级数互补现象以及等动力学温度规律，进行合理的解释

According to transition state and Redox hypothesis , the author gives us a reasonable explanation to the complementation effect on selective oxidation of olefin on oxide catalyst and complementation of order of reaction , etc

利用热重法对该树脂的热分解动力学过程进行研究，并计算了热分解动力学参数：活化能Ea，指前因子A，反应熵S，反应自由能G，反应焓H。

The heat decomposition of the resin was studied using TG , and its thermo parameters such as activation energy Ea , pre-exponential factor A , entropy of activation S ~ , free energy of activation G , enthalpy of activation H were determined .

补偿效应参数（K0）和能量分布指前因子（1/b）均与负载的金属离子半径（dm）有关。

E. the activation energy ( E ) increased with the increase of the pro-exponential factor ( A ), Both compensation effect parameter ( K0 ) and energy distribution exponential factor ( 1 / 6 ) were closely related to the metal ionic radius ( dm ) .

分别用TG、DSC曲线对不同煤样进行了热动力学分析，计算了不同煤样的反应机理函数、增重阶段的着火活化能、相关度及指前因子。

The article uses the TG and DSC curves of different kinds of coal for thermo-kinetic analysis and calculates different kinds of reaction mechanism of coal and the ignition activation energy of weight gain phase and correlation degree and pre-exponential factor .

Te掺杂后激活能和指前因子均随转变分数增长而增大，其值均高于Fe-Se体系。

The activation energy and pre-exponential factor both increase with the increasing fraction α after Te doping , and the values are all higher than that of FeSe system .

应用此模型计算四种煤焦反应活化能、指前因子、孔结构参数、A0等动力学参数值。

A0 is bigger when the gasification temperature is higher . ψ as the initial pore structure parameter is affected by the change of pore structure at different pyrolysis temperatures .

氧在液相主体消耗的本征动力学活化能为57kJ/mol，指前因子53.34m~3/（mol·s）。

The intrinsic activation energy estimated was 57 kJ / mol and the pre-exponential factor estimated was 53.34 m ~ 3 · mol ~ ( - 1 )· s ~ ( - 1 ) on oxygen consumption in liquid-phase zone .

介绍了热分析动力学（TAK）的基本研究方法，包括如何求解活化能、确定最概然机理函数和指前因子。

The normal methods to determine activation energy , most probable mechanism function and pre-exponential factor in thermal analysis kinetics ( TAK ) were described in the former part of this paper .

得到以下结论：随着温度的升高，水解速率常数也随之增加.根据阿伦尼乌斯方程，求得了水解反应的活化能Ea为9.45kJ/mol、指前因子A为2.30。

The results were obtained as follows : with the rising of temperature , hydrolysis rate constants have been increased , and the hydrolysis reaction activation energy E_ ( a ) was 9.45 kJ / mol and A was 2.30 for the Arrhenius equation .

在逻辑选择建立了微分和积分机理函数的最可几一般表达式后，用放热速率方程得到相应的表观活化能（Ea）、指前因子（A）和反应级数（n）的值。

After establishing the most probable general expression of differential and integral mechanism functions by the logical choice method , the corresponding values of the apparent activation energy ( E_a ), pre-exponential factor ( A ) and reaction order ( n ) will be obtained by the exothermic rate equation .

建立了CaS生成反应动力学，得到CO气氛下CaS的生成反应为1/2阶化学反应，指前因子为5.69×10~（12），表观活化能为461.37kJ/mol。

Finally , the formation kinetics of CaS was established . The reaction is the 1 / 2 order at CO atmosphere . The pre-exponential factor is 5.69 × 10 ~ ( 12 ) and the apparent activated energy of the reaction is 461.37kJ/mol .

在动力学分析中，本文利用Malek法确定最概然机理函数，分析得出生物质热解过程需分为两个阶段分别建立动力学模型，近而最终求得较为合理的反应活化能及指前因子。

It is analysed that biomass pyrolytic process should be divided into two stages and establish dynamic model respectively . The dynamic parameters such as activation energies and pre-exponential factor will finally be obtained more reasonably .

用热重法测得了TATB、TCTNB和TCDNB在不同升温速率的热重曲线，根据Ozawa方法计算得到了热分解活化能和指前因子，研究了热分解反应机理和动力学方程。

The TG curves of TATB and it 's impurities are given in this paper . The thermal decomposition activation energy and pre-exponential factor of TATB and it 's impurities are calculated by Ozawa method . The reaction mechanism and kinetics equation of the thermal decomposition are studied .

通过动力学分析，得到了干燥过程活化能、指前因子等动力学参数。

The activation energies and pre-exponential factors were obtained by analyzing the reaction dynamics .

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 .

估算了热分解反应的活化能和指前因子；

The apparent activation energy and the preexponential constant of heat decomposition reaction were evaluated .

通过对实验数据的回归，求取了反应动力学速率常数，反应活化能和反应的指前因子。

Rate constants , frequent factors and activation energies parameters were estimated according to the experimental data .

部分压型试样的活化能和指前因子之间存在差补偿效应。

There is a compensation effect between activation energy and the Arrhenius parameters of some compressed samples .

提出了对不同复杂结构的干酪根样品固定指前因子法和变指前因子法的两种标定方法。

Meanwhile , tow different calibration methods of fixed preexponential factors and alterable preexponential factors of kerogen with different structure .

通过模型估计得到的参数值，计算出了各步可逆反应的活化能、积分吸附热和指前因子的值。

The values of activity energy , integral adsorption heat and pre-exponential factor were obtained by the kinetic parameters estimated from the model .

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 ;

确定了此反应为二级反应；求出了不同温度下的反应速率常数、活化能、指前因子以及活化熵变；

The reaction is second-order and activation ener-gy , factor before exponent , activation entropy , reaction speed constant in different temperatures are given .

利用速率常数法和机理函数法计算了绝热分解的活化能、指前因子、反应级数等动力学参数和反应热等热力学参数。

Kinetic parameters , such as activation energy , pre-exponential factor and reaction order and reaction heat are calculated using reaction rate method and mechanism function method .

正反应的表观活化能和指前因子分别为：30.12kJ/mol和0.365mol.dm3/mol。

The apparent activation energy and pre-exponential factor of forward reaction are 30.12 kJ / mol and 0.365 dm ~ 3 / mol · s , respectively ;