HZSM-5分子筛中邻近酸中心上的协同催化作用

Cooperative Catalysis of Adjacent Acid Sites in Zeolite HZSM-5

总结了HZSM-5分子筛中邻近的酸中心协同催化作用的研究进展,包括布朗斯特酸(B酸)和路易斯酸(L酸)的协同催化、B酸和B酸的协同催化作用.综述了通过多种表征手段下协同催化作用机理的研究进展,以及实验与理论计算相结合并相互验证的研究结果,对邻近酸中心协同作用下反应分子的共同吸附、活化与转化路径的特点进行了分析与总结,提出了对邻近酸中心协同催化作用进行深入研究的关键科学问题和可能的解决方案.

Recent advances in cooperative catalysis from adjacent acid sites in zeolite HZSM-5 is summarized in this review.The cooperativity is from the Brønsted acid site and the Lewis acid site as well as from adjacent Brønsted acid sites.Kinds of characterization are described for molecular adsorption,activation and transfor⁃mation together with catalysis performance.The theoretical calculation is also performed to prove the coopera⁃tive catalysis.The challenge of studying the new facile pathway of cooperative catalysis is also raised up,and accurate measuring the distance of two acid sites and quantifing the amount of adjacent acid sites are pursued as well.