VPO催化氧化正丁烷制顺酐是目前唯一实现工业化的低碳烷烃选择氧化反应。本文介绍了VPO催化机理和主要的反应网络,综述了国内外反应动力学的研究进展情况。根据人们对正丁烷氧化反应机理的不断认知及动力学模型的完整性,首次将正丁烷氧化制顺酐反应动力学的发展分为探索期、成型期和拓展期三个时期,并阐释了每个时期的特征和典型模型。探索期特征是仅考虑反应物在催化剂表面的吸附行为,成型期特征是充分考虑了产物对反应的抑制作用,拓展期特征是考虑了催化剂氧化度不断变化的动态过程并将不同氧气形式之间的相互变化引入动态模型中。从时空多尺度角度研究动力学和传递之间的相互作用是正丁烷选择氧化反应动力学下一步的研究重点,也是未来动力学研究的发展方向。
n-Butane selective oxidation to maleic anhydride on VPO catalyst is the only industrialized selective oxidation reaction of light alkanes. The catalytic mechanism and reaction network are introduced. The research progress of reaction kinetics at home and abroad is reviewed. Based on continuous knowledge of reaction mechanism and the integrity of the kinetics model,the development of reaction kinetics is divided into three periods for the first time,that is,the exploration period,the forming period and the further developing period.The features and the typical models of every period are introduced. The feature of the exploration period is that the model only takes reactants' adsorption behavior on the catalyst surface into account. The feature of the forming period is that the product inhibition on the reaction is taken fully into account. The feature of the further developing period is that the oxidation degree of the catalyst with time changes and conversion among different forms of oxygen is brought into the dynamic model. Finally,we point out that the research of n-butane selective oxidation reaction kinetics will focus on the research of the interaction between kinetics and transfer process in the perspective of space-time multiscale.