MFI zeolite with microporous and mesoporous hierarchical structure, preparation method therefor, and catalytic use thereof

A method for preparing an MFI zeolite with a microporous and mesoporous hierarchical structure in which an ordered microporous MFI zeolite additionally has mesopores, the method comprising:

• a first step of preparing a first aqueous solution in which a non-benzene-based first structure-directing agent, providing ordered microporous pore sizes and a framework of MFI zeolite seed crystals, is dissolved in water;
• a second step of preparing a second(2) aqueous solution in which a cationic surfactant, as a second structure-directing agent, containing one benzene ring and an ammonium ion connected to a bivalent alkyl group or alkoxy group, is dissolved in water;
• a third step of mixing an aluminum precursor with the second aqueous solution to prepare a second′(2′) aqueous solution;
• a fourth step of sequentially adding a silica precursor and the second′ aqueous solution to the first aqueous solution to prepare a mixed solution;
• and
• a fifth step of hydrothermally crystallizing the mixed solution obtained in the fourth step to form the MFI zeolite.