Acta Phys. -Chim. Sin. ›› 2010, Vol. 26 ›› Issue (08): 2224-2228.doi: 10.3866/PKU.WHXB20100806

• CATALYSIS AND SURFACE STRUCTURE • Previous Articles     Next Articles

One-Step Synthesis of Mesoporous Beta Zeolite Using Phosphate

LIU Shu-Ping, YUE Ming-Bo, WANG Yi-Meng   

  1. Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Chemistry Department, East China Normal University, Shanghai 200062, P. R. China
  • Received:2010-01-07 Revised:2010-03-14 Published:2010-07-23
  • Contact: WANG Yi-Meng E-mail:ymwang@chem.ecnu.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20873042, 20890122).

Abstract:

The addition of sodium phosphate monobasic (NaH2PO4) to a synthetic mixture allows a one-step synthesis of mesoporous Beta zeolite. Aggregation of the nanosized Beta zeolites allows the filtration difficulties to be overcome while the intercrystalline mesopores reduce the diffusion limitation and thus enhance the catalytic activity. The obtained Beta zeolite samples were characterized by X-ray diffraction, scanning electron microscopy, N2 adsorption-desorption, and temperature-programmed desorption of ammonia. The amount of phosphate strongly influenced the mesopore volume of the Beta zeolites. When the molar ratio of NaH2PO4/SiO2 was 0.1, the sample had good textural and acidic properties and exhibited the best catalytic activity for the alkylation of phenol with tert-butanol.

Key words: Hydrothermal synthesis, Beta zeolite, Mesoporous, Alkylation, Phosphate

MSC2000: 

  • O643.36