Metal modified zeolite catalyst and method for catalyzing lactone compound to generate terminal olefin

Abstract

The invention relates to the technical field of catalyst and compound preparation, in particular to a metal modified zeolite catalyst and a method for catalyzing a lactone compound to generate terminal olefin. The invention provides a metal modified zeolite catalyst. The structural general formula of the metal modified zeolite catalyst is M-SiO2; wherein the metal M is selected from any one of Ti, Cr, Mn, Co, Ni, Cu, Zn, Zr, Nb, W, Ta and Hf; in the provided metal modified zeolite catalyst, metal atoms are arranged on framework end points of a zeolite molecular sieve, so that a monatomic catalyst is formed; on one hand, the obtained catalyst has a Lewis metal site, can be beneficial to catalyzing a lactone compound to realize a decarboxylation reaction, ensures that the lactone compound can be directly catalyzed to generate terminal olefin, and can be widely applied. 本申请涉及催化剂和化合物制备技术领域，尤其涉及一种金属改性沸石催化剂及催化内酯化合物生成终端烯烃的方法。提供了一种金属改性沸石催化剂，所述金属改性沸石催化剂的结构通式为M<subgt;‑</subgt;SiO<subgt;2</subgt;；其中，金属M选自Ti、Cr、Mn、Co、Ni、Cu、Zn、Zr、Nb、W、Ta、Hf中的任意一种；由于提供的金属改性沸石催化剂中，金属原子设置与沸石分子筛的骨架端点上，形成了单原子催化剂；一方面，得到的催化剂具有刘易斯金属位点，能够有利于催化内酯化合物实现脱羧反应，确保能够直接催化内酯化合物生成终端烯烃，可广泛应用。