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团簇Co3FeP异构化反应的热力学与动力学研究
引用本文:毛智龙,方志刚,秦渝,许友,侯欠欠.团簇Co3FeP异构化反应的热力学与动力学研究[J].北京化工大学学报(自然科学版),2021,48(5):24-32.
作者姓名:毛智龙  方志刚  秦渝  许友  侯欠欠
作者单位:辽宁科技大学 化学工程学院, 鞍山 114051
基金项目:国家自然科学基金重点项目(51634004);国家级大学生创新创业训练计划(202010146009/202010146016);辽宁省大学生创新创业训练计划(202010146059/202010146052/202010146015)
摘    要:为了寻找团簇Co3FeP的稳定性、结构和内部作用力等规律,利用密度泛函理论,在B3LYP/Lanl2dz的量化水平下对团簇Co3FeP进行理论计算,得到5种优化构型,并从化学反应热力学与动力学的角度对其异构化反应中的反应物、过渡态和生成物进行了讨论分析。结果表明,所有构型均为C1对称且构型的空间结构对其熵值有影响;构型的稳定性主要由金属原子与非金属原子所决定,并且在常温常压下构型1(3)、2(3)和3(3)可以稳定存在,是大部分异构化反应的最终产物。因此,在实际材料的开发中,不仅需要注意金属原子与非金属原子之间的作用力以确保构型的稳定性,还应首先考虑对稳定构型1(3)、2(3)和3(3)进行相关研究。

关 键 词:团簇Co3FeP  密度泛函理论  范特霍夫方程  过渡态理论  阿伦尼乌斯公式  
收稿时间:2021-05-14

Thermodynamics and kinetics of the isomerization reactions of the Co3 FeP cluster
MAO ZhiLong,FANG ZhiGang,QIN Yu,XU You,HOU QianQian.Thermodynamics and kinetics of the isomerization reactions of the Co3 FeP cluster[J].Journal of Beijing University of Chemical Technology,2021,48(5):24-32.
Authors:MAO ZhiLong  FANG ZhiGang  QIN Yu  XU You  HOU QianQian
Institution:School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China
Abstract:In order to find the stability, structure and internal forces of the Co3FeP cluster, density functional theory has been used to calculate the cluster at the B3LYP/Lanl2dz level. Five optimized configurations were obtained and the reactants, transition states and products of the isomerization reactions are discussed and analyzed from the perspective of both thermodynamics and kinetics. The results showed that all configurations are C1 symmetric and the spatial structure of the configuration has an effect on its entropy. The stability of the configuration is determined by both metal and non-metal atoms. The configurations 1(3), 2(3) and 3(3) are stable under normal temperature and pressure and are the final products of most isomerization reactions. Therefore, in terms of actual material development, it is not only necessary to pay attention to the forces between metal and non-metal atoms to ensure the stability of the configuration, but we should also consider the relevant research on the stable configurations 1(3), 2(3) and 3(3).
Keywords:Co3FeP cluster  density functional theory  Van't Hoff equation  transition state theory  Arrhenius formula  
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