Synthesis and Characterization of NaY/MCM-48 Composite Molecular Sieve

doi:10.3724/SP.J.1077.2006.01209

Abstract

Abstract: A new material NaY/MCM-48 composite molecular sieve was prepared with NaY-zeolite as the inner core. The synthesized composite sample was characterized by XRD, SEM, TEM, IR, N₂ adsorption/desorption method and TPD. In addition, it’s hydrothermal stability was studied. The results show that the composite material has the properties of both mesoporous MCM-48 and the microporous NaY. The composite molecular sieve has thicker pore wall, larger pore size, stronger acid strength and higher hydrothermal stability than pure mesoporous molecular sieve MCM-48. The DFT pore diameter is mainly located at 1.2nm and 3.2nm.

Key words: NaY/MCM-48 composite molecular sieve, pore wall, pore size, hydrothermal stability, acid strength

CLC Number:

TB383

LI Yong-Xin,ZHANG Yan-Hua,XUE Bing. Synthesis and Characterization of NaY/MCM-48 Composite Molecular Sieve[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2006.01209.

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Synthesis and Characterization of NaY/MCM-48 Composite Molecular Sieve

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