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1)  activation energy
活化能
1.
Study on spontaneous combustion period of coal based on activation energy index;
基于活化能指标的煤的自然发火期研究
2.
Comparison of different methods for analyzing the activation energy of oil shale combustion;
油页岩燃烧反应活化能不同求解方法的比较
3.
Study on the spontaneous combustion tendency of coal based on activation energy index;
基于活化能指标煤的自燃倾向性研究
2)  active energy
活化能
1.
The calculation results of decomposition reaction showed that the cured system of ATPU-2/E-44 had better heat resistance,the reaction decomposition active energy of ATPU-2/E-44 system was higher than that of ATPU-1.
固化反应动力学研究表明ATPU-2/E-44固化物的分解反应活化能高于ATPU-1。
2.
Obtain the apparent active energy of the thermal decomposition reaction with the two experiential formulas of the Kissinger and CoatsRedfern.
确定了苯甲酸的平衡起始热分解温度T0=392 K;由Kissinger与Coats-Redfern两种经验公式求得该热分解反应的表观活化能E=70。
3.
The active energy is in the range of 170.
分别应用Friedman法、Vyazovkin法、改进的Coats-Redfern法和Flynn-Wall-Ozawa(FWO)法等4种不同的等转化率法计算了CaCO3的分解动力学参数,得到的活化能范围为170。
3)  activity energy
活化能
1.
The characters of the three complexes were characterized and the hydratio n velocity constant of [Co(NH3)5Cl]Cl2 and its activity energy were determined .
本文首先合成了这三种钴的配合物,然后对钴的这三种配合物的性质进行了研究,测定了[Co(NH3)5Cl]Cl2的水合速率常数和活化能
2.
34, and the activity energy is 119.
样品的活化能Ea=119。
3.
21 kJ/mol and the activity energy significantly decreases from 173.
02kJ/mol;燃烧活化能由原来的173。
4)  activated energy
活化能
1.
Some typical theories about the activated energy in chemical reactions arecompared and analyzed,with their differences and similaries pointed out.
本文对几种有代表性的活化能理论进行了比较与分析,指出了各种理论的异同点,并提出了一些新的见解。
2.
According to the release data of pyrolysis products,the single-equation model was used for calculating the heating rates,the frequency factors and the activated energy,which provides the theoretical foundation for the further research on the ignition and combustion of micro-pulverized coal.
根据热解产物的释放数据,采用单方程反应模型计算出了煤粉升温速率、热解频率因子及活化能,为进一步研究超细煤粉的着火及燃烧提供了理论基础。
5)  apparent activation energy
活化能
1.
Being concerned on both the constant rate period and falling rate period(s) of dynamic process for the drying particulate and thin layer materials, a approach of warp apparent activation energy was put forward and used for predicting the dynamic characteristics of various stuffs dried in the industrial drying.
针对小质量物料干燥动态过程恒速率干燥阶段和降速率干燥阶段,提出了用偏差活化能的方法来避免寻找该两个干燥阶段临界湿分点的困难,并从物理化学的概念推导出了理论动态数学模型,建立了物料干燥动态特性实验台,以实验数据验证模拟结果,效果较好。
2.
On the basis of DSC curves of B/KNO_3 igniter powder,the apparent activation energy E of thermal decomposition is calculated with Kissinger′s methods and the probable mechanism function is available from master plot method.
利用差示扫描量热法得到B/KNO3的热分解曲线,用K iss inger方程估算了B/KNO3的表观活化能,用标准作图法得到最可几热分解机理函数,再用积分法求得不同升温速率下热分解的动力学参数活化能E和指前因子A。
3.
The apparent activation energy by the initial rate method was 94kJ/mol, indicating that the process was controlled by a chemical reaction.
由初速率方法求出反应活化能为94kJ/mol,表明水热反萃过程为化学反应控制。
6)  activation characteristics
活化性能
1.
The microstructure, thermal stability and activation characteristics of the LaNi 5-31%Mg alloy were investigated by XRD,SEM,DTA and battery test apparatus.
采用X -射线衍射 (XRD)、扫描电子显微镜 (SEM)、差热分析 (DTA)及电池性能测试仪等方法研究了LaNi5 3 1%Mg合金的组织形貌、热稳定性能及电化学活化性能等。
2.
The effect of different binders on activation characteristics is also studied.
3)贮氢合金中Ml∶Mm比例对其活化性能的影响,以及使用不同粘结剂对合金的活化性能和放电容量的影响。
补充资料:活化能
活化能
activation energy

   非活化分子转变为活化分子所需吸收的能量。温度对反应速率有显著影响。在多数情况下,其定量规律可由阿伦尼乌斯公式来描述:
   κAe-E/RT(1)式中κ为反应的速率系(常)数;EA分别称为活化能和指前因子,是化学动力学中极重要的两个参数;R为摩尔气体常数;T为热力学温度。对于更为复杂的描述κT的关系式中,活化能E定义为:
   ERT2(dlnκ/dT)(2)
   在元反应中,并不是反应物分子的每一次碰撞都能发生反应。S.A.阿伦尼乌斯认为,只有“活化分子”之间的碰撞才能发生反应,而活化分子的平均能量与反应物分子平均能量的差值即为活化能。近代反应速率理论进一步指出,两个分子发生反应时必须经过一个过渡态——活化络合物,过渡态具有比反应物分子和产物分子都要高的势能,互撞的反应物分子必须具有较高的能量足以克服反应势能垒,才能形成过渡态而发生反应,此即活化能的本质。
   式(1)可写成:
   lnκ=lnAERT(3)根据式(3),由实验测出不同温度下的κ值,并将lnκ对1/T作图,即可由所得直线的斜率求出E值。也可将由实验归纳出的κT的经验关系式直接代入式(2)求得E值。
    对于复合反应,由上述实验方法求出的E值只是表观值,没有实际的物理意义。
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