ZSM-5 type molecular sieve with nanosheet layer structure as well as preparation and application of ZSM-5 type molecular sieve

The invention discloses a ZSM-5 type molecular sieve with a nanosheet layer structure and a preparation method of the ZSM-5 type molecular sieve. The surface nanocrystal size of the ZSM-5 type molecular sieve is 100 nm, the length of a long axis of the nanosheet layer structure is 80-160 nm, and the width of a b axis is 2-50 nm. The synthesis method comprises the following steps: under a stirring condition, adding a template agent into distilled water, dissolving, sequentially adding an aluminum source and an alkali source, gradually adding a silicon source to obtain initial gel, adding a certain amount of high alcohol, carrying out heat treatment in a sodium hydrogen phosphate saturated hydrothermal atmosphere with a certain molar concentration for a period of time, and carrying out a crystallization reaction to obtain the high-purity silicon-aluminum composite material. And after the crystallization reaction is finished, drying and roasting to obtain the ZSM-5 molecular sieve with the nanosheet layer struct