EU-1/ZSM-5 composite molecular sieve, preparation method of EU-1/ZSM-5 composite molecular sieve and application of EU-1/ZSM-5 composite molecular sieve

The invention provides an EU-1/ZSM-5 composite molecular sieve, a preparation method of the EU-1/ZSM-5 composite molecular sieve and application of the EU-1/ZSM-5 composite molecular sieve. A ZSM-5 molecular sieve in the EU-1/ZSM-5 composite molecular sieve is inlaid at the periphery of an EU-1 molecular sieve, a weight content of the EU-1 molecular sieve in the composite molecular sieve is 30%-70%, a sialsphere molar ratio of the composite molecular sieve is 30-50, a mesoporous volume of the composite molecular sieve is 30%-75% of total pore volume, and a mesoporous pore diameter concentrates upon 30-50nm. The preparation method of the EU-1/ZSM-5 composite molecular sieve comprises a crystallization material preparation process, a crystallization process, and filtering, washing, drying and roasting processes after the crystallization process. The EU-1/ZSM-5 composite molecular sieve is applied to C8 aromatic hydrocarbon isomerization reaction, wherein application conditions are that the temperature is 350-420 DEG C, the reaction pressure is 0.6-1.1MPa, the hydrogen hydrocarbon molar ratio is 3-5, and the raw material quality airspeed is 3.0-6.0h . The composite molecular sieve has two molecular sieve crystalline phases, and has a hole channel with a big hole diameter, so that a problem that catalysis performance is influenced by low spread efficiency in the application of a micropore molecular sieve can be solved.