Phosphorus-Containing Rare-Earth-Containing MFI Structure Molecular Sieve Rich in Mesopore, Preparation Method, and Catalyst Containing Same and Application Thereof

A rare earth- and phosphorus-containing molecular sieve of MFI structure rich in mesopores, comprising a silicon component, an aluminum component, a phosphorus component and a supported metal component, wherein the molecular sieve has a ratio of n(SiO2)/n(Al2O3) of more than 15 and less than 70;

• the molecular sieve has a content of phosphorus, calculated as P2O5, of 1-15 wt % based on the dry weight of the molecular sieve;
• the molecular sieve has a supported metal content, calculated as the oxide of the supported metal, of 1-10 wt % supported metal M1 and 0.1-5 wt % supported metal M2 based on the dry weight of the molecular sieve, wherein the supported metal is one or more selected from rare earth elements, preferably one or two selected from lanthanum and cerium, and the supported metal M2 is one selected from iron, cobalt, nickel, copper, manganese, zinc, tin, bismuth and gallium;
• the volume of mesopores in the molecular sieve represents 40-70% by volume of the total pore volume of the molecular sieve, the volume of mesopores and the total pore volume of the molecular sieve are measured by a nitrogen adsorption BET specific surface area method, and the volume of mesopores means the pore volume of the pores having a diameter of more than 2 nm and less than 100 nm.