H-ZSM-11分子筛因其独特的三维中孔结构、宽泛可调变的硅铝比以及快速合成特性，成为一种非常有潜力的甲醇制烯烃(MTO)催化剂；深刻认识分子筛孔道结构-活性酸位分布-催化性能之间的关联，对提升分子筛的MTO性能具有重要意义。为此，本项目拟选择合成系列H-ZSM-11分子筛，通过在水热合成中添加不同种类和含量的阳离子助剂，调节酸中心在H-ZSM-11孔道中的分布位置；利用UV-vis-DRS、27Al MQ/MAS NMR和DFT理论计算揭示阳离子助剂调控分子筛酸位分布的本质原因；此外，结合原位DRIFTS、GC-MS和13C同位素标记等技术探究不同酸位点上活性中间体的生成及演化过程；系统研究酸性调控对分子筛MTO催化性能和反应机理的影响，最终建立阳离子种类/含量-分子筛酸位分布-催化性能之间的定量关系，为实现分子筛催化活性和目标产物选择性的精准调控提供理论和实验指导。

H-ZSM-11 zeolite is a potential methanol to olefins (MTO) catalyst due to its three dimensional medium-pore structure, wide adjustable Si/Al ratio and the rapid synthesis characteristic. The catalytic performance of acidic zeolites used in MTO is closely related to their acidic properties of the active acid sites and the surrounding pore structure; a clear understanding on the relation of pore structure - acid sites distribution - catalytic property is of benefits to the development of better zeolite catalysts and improvement of current processes for MTO. In this project, the detailed location of aluminum atoms in H-ZSM-11 framework were precisely regulated by adding various type and content of cationic additives during hydrothermal synthesis. UV-vis-DRS, 27Al MQ/MAS NMR and DFT calculation are preformed to evaluate the distribution of active acid sites in H-ZSM-11 zeolite. The formation of active intermediates and their evolution in MTO over different acid sites are investigated by using in situ DRIFTS, GC-MS and 13C isotope labelling technologies to systemically elucidate the influence of Al siting or acid sites distribution on catalytic performance and reaction mechanism of zeolites. The establishment of the quantitative relation of type and content of cationic additives - acid sites distribution - catalytic performance could bring forward theoretical and experimental guidance to achieve the precise regulation of catalytic activity and target product selectivity of zeolites.