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催化动力学模型
相关语句
  catalytic kinetic model
     STUDY ON CATALYTIC KINETIC MODEL OF SORBITOL SYNTHSIS
     合成山梨醇的催化动力学模型
短句来源
     A ternary complex kinetic model involving metal ion, ligand and substrate and a bimolecular catalytic kinetic model have been proposed for the catalytic hydrolysis of PNPP and PNPA, respectively. Relative kinetic and thermodynamic parameters have been obtained, and the results confirmed the reasonability of such kinetic models.
     作者推导了包括配体、金属离子和底物在内的金属配合物催化PNPP水解的三元复合物动力学模型 ,提出了金属配合物催化PNPA水解的双分子催化动力学模型 ,并得到了相应的热力学及动力学参数 ,实验结果也证明了这些模型的合理性
短句来源
  catalytic kinetic models
     RECENT DEVELOPMENT OF STEADY-STATE CATALYTIC KINETIC MODELS
     稳态催化动力学模型的挽近发展
短句来源
  相似匹配句对
     STUDY ON CATALYTIC KINETIC MODEL OF SORBITOL SYNTHSIS
     合成山梨醇的催化动力学模型
短句来源
     Investigation of the Kinetic Model of Coke Formation for Catalytic Cracking Reaction
     催化裂化反应生焦动力学模型
短句来源
     Kinetic Model for Increasing Diesel in Fluid Catalytic Cracking
     多产柴油的催化裂化动力学模型
短句来源
     The Kinetic Model for Catalytic Steam Reforming of Methane
     甲烷水蒸汽催化转化的动力学模型
短句来源
     Kinetic Modeling of FCC Gasoline Catalytic Reaction
     FCC汽油催化转化动力学模型
短句来源
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  catalytic kinetic model
A kinetic equation is introduced to describe the overall process by means of an auto-catalytic kinetic model which could also be extended to describe any annealing process presenting a multi-sigmoidal character.
      


By the analysis of experimental data and the fitting of different kinetic models, the catalytic kinetic model of sorbitol synthesis may be considered to be controlled by desorption of productsorbitol with reaction between molecuarly adsorbed hydrogen and adsorbed glucose on the catalytic surface. The kinetic. equation may be expressed as:r=kK_AC_AK_BαP_B/(1+K_AC_A+K_BαP_B). The model parameters are estimated by linear regression.

在实验的基础上筛选出合成山梨醇的催化动力学模型,即吸附在催化剂表商上的葡萄糖分子和氧分子间反应,产物山梨醇脱附为速度控制步骤。用线性回归的方法计算出相应的模型参数。

Abstract The kinetic regularity for the formation of 2223 phase with the CuF2 substitution for CuO in Bi-based superconductor has been reported. It indicated that 2223 phase transformation ratio, reaction velocity constant K (changing with temperature T) and sintering time are satisfied with the relationship= 1-exp(- kt 0.7). At the same time, the apparant activiation energy Ea= 239.80 kJ/mol has been obtained at 835°±2℃. It i llustrates that doping CuF2 can decrease the activation energy barrier of forming...

Abstract The kinetic regularity for the formation of 2223 phase with the CuF2 substitution for CuO in Bi-based superconductor has been reported. It indicated that 2223 phase transformation ratio, reaction velocity constant K (changing with temperature T) and sintering time are satisfied with the relationship= 1-exp(- kt 0.7). At the same time, the apparant activiation energy Ea= 239.80 kJ/mol has been obtained at 835°±2℃. It i llustrates that doping CuF2 can decrease the activation energy barrier of forming 2223 phase, which is benefit to the formation of 2223 phase. And it shows that E is the principal factor controlling reaction and the phase forming is satisfied with the "crystal forming and crystal growing self-Catalystic reaction model". The catalystic effect of CuF2 in the process of preheating and sintering has also ben discussed. It indicated it is possible to obtain a more pure Bi-2223 superconductor if we can find a way to decrease effectively the activation energy more effectly.

本文报告了在铋系2223名义成份中.以CuF2代替部分CuO时,形成2223超导相的动力学规律.经X-射线衍射的相成份分析,得到了体系2223相转化率α与反应速率常数K(随温度T变化),烧结时间t满足关系式α=1-exp(-kt(0.7)).同时求得在835°±2℃时的表观活化能Ea=239.80kJmol(-1),说明了CuF2的掺入显著降低了形成2223相反应活化能垒,大为有利于2223相的形成.显示了Ea是控制反应的主要因素,成相过程满足成核生长自催化动力学模型.文中还讨论了CuF2在预烧和烧结过程中的催化效应,指出如果找到更有效降低活化能垒的方法,有可能得到纯粹的2223相铋系超导体.

Recent progress and development of steady-state catalytic kinetic models were systemati-cally analyzed in this paper. Micro-kinetic model and its applications were also introduced indetail.

系统地分析了稳态催化动力学模型的建立和挽近发展,还详细地介绍了微动力学模型及其实际应用

 
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