Development of novel zeolite catalyst with highly catalytic activity in direct synthesis of light olefins through conversion of methanol

本论文研究了以甲醇为原料，高效生产低碳烯烃的新型沸石催化剂的开发。通过改变有机化合物的结构和合成沸石的起始凝胶浓度，成功地控制了具有拓扑结构的沸石催化剂的粒度、酸强度和催化性能等物理化学性质。此外，与传统合成方法相比，成功地开发了合成沸石的新方法，不需要任何有机化合物，合成时间更短。在甲醇转化为低碳烯烃的反应中，与传统方法合成的相同结构的沸石相比，用上述新方法合成的纳米沸石具有更长的催化剂寿命。

In this study, the development of novel zeolite catalyst for the efficient production of light olefins, which are widely utilized as a raw material of chemicals in the industrial field, from methanol has been studied. The physicochemicalsuch as the particle size and acid strength and catalytic properties of zeolite catalysts with a topology were successfully controlled by varying the structure of organic compounds and the concentration of the starting gel for the zeolite synthesis. In addition, new method for the zeolite synthesis was successfully developed without any organic compounds at shorter synthesis duration compared the conventional methods. In the conversion of methanol to light olefins, nanosized zeolites synthesized employing the novel method above exhibited a longer catalyst life compared with the zeolite with the same structure synthesized by conventional methods.