Synthesis method and application of high-crystallinity hierarchical pore LSX zeolite molecular sieve

The invention discloses a synthesis method and application of a high-crystallinity hierarchical pore LSX zeolite molecular sieve. The preparation method comprises the following steps: (1) dissolving sodium aluminate in water to obtain a solution A; (2) dissolving water glass in water to obtain a solution B; (3) adding NaCl into the solution A, fully stirring and mixing, continuously adding the solution B after mixing, fully stirring and mixing, then adding a template agent, and stirring to obtain a mixture; and (4) heating the mixture to carry out a reaction, washing, drying and calcining after the reaction to obtain the hierarchical pore LSX zeolite molecular sieve named as MLSX. According to the application, the high-crystallinity hierarchical pore LSX zeolite molecular sieve is appliedto glycerol hydrogenation. The hierarchical pore LSX zeolite molecular sieve with controllable pore diameter and surface area is directly prepared by using different pore-forming template agents in the hydrothermal synthesis