Abstract: Firstly, ZSM-5 zeolite with microporous structure by alkali treatment for different time was mixed with mesoporous template hexadecyltrimethylammonium bromide (CTAB) to prepare microporousmesoporous ZSM-5 molecular sieve by hydrothermal method. The physicalchemical properties of the microporousmesoporous ZSM-5 molecular sieve were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and N₂ adsorptiondesorption and transmission electron microscopy (TEM). Secondly, the microporousmesoporous ZSM5 molecular sieve was used as catalysts for alkylation reaction of phenol with tertbutanol. The catalytic properties of the materials were tested by the conversion of phenol and the selectivity of 2,4ditertbutylphenol. The results show that ZSM5 with good composite of micropore and mesopores can be obtained after alkali treatment for 1 h,  the catalyst has better catalytic performance for phenol with tertbutanol, the highest conversion of phenol is 86.2%, and the selectivity of 2,4ditertbutylphenol is 57.9%.

Key words: microporousmesoporous ZSM5 molecular sieve, alkali , solution treatment mehtod, catalytic activity