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催化反应过程伴随着气体分子与催化剂活性中心之间键的形成与转化,并以热量的形式表现出来.采用Tian-Calvet型微量热量计测量这些热量,则可能从能量角度研究气体分子在催化剂表面上的吸附与反应行为,为探索催化剂反应性能及机理提供依据.微量热量计与真空系统相结合的吸附量热技术已经广泛用于催化研究.本文总结了近十年来吸附量热技术在金属催化剂研究中的应用,阐述了这种技术在活性中心表征和反应性能关联方面的研究进展.此外,还介绍了我们研究组发展的脉冲量热装置进行催化反应过程研究的最新进展.
The catalytic reaction is accompanied by the formation and transformation of bonds between the gas molecules and the active site of the catalyst and is manifested in the form of heat.Using the Tian-Calvet microcalorimeter to measure these heats, it is possible to study the effect of gas molecules on the surface of the catalyst On the adsorption and reaction behavior, to provide a basis for exploring the reaction performance and mechanism of the catalyst.Adsorption calorimetry technology combining the microcalorimetry and the vacuum system has been widely used in the catalytic research.This paper summarizes the adsorption capacity calorimetry in the past ten years in the metal catalyst And the application of this technique in the study of the relationship between active center characterization and reaction performance is also described.In addition, the latest progress of the catalytic reaction process of the pulse calorimeter developed by our research group is introduced.