Synthesis of MCM-22 with High SiO2/Al2O3 Ratio and Its Catalytic Performance on C4-olefins Cracking Reaction

Abstract

Abstract: MCM-22 zeolite with a high SiO₂/Al₂O₃ ratio was synthesized in the hydrothermal system of Na₂O-SiO₂-Al₂O₃-(CH₂)₆NH and its catalytic performance in the C₄-olefins cracking reaction was investigated. It was found that MCM-22 showed an excellent catalytic performance on C₄-olefins cracking reaction to produce propylene. The results indicated that high temperature and high LHSV(liquid hourly space velocity) were favorable for the production of propylene with a high selectivity. Lifetime test of HMCM-22 and HZSM-5 for the cracking of C₄ olefins indicates that the deactivation rate of HMCM-22 is lower than that of HZSM-5.

Key words: Catalytic cracking, MCM-22, C₄-olefins, Propylene

CLC Number:

O641

TrendMD:

ZHAO Guo-Liang, TENG Jia-Wei, XU Ning, TANG Yi, XIE Zai-Ku, YANG Wei-Min, CHEN Qing-Ling. Synthesis of MCM-22 with High SiO₂/Al₂O₃ Ratio and Its Catalytic Performance on C₄-olefins Cracking Reaction[J]. Chem. J. Chinese Universities, 2005, 26(6): 1140.

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Synthesis of MCM-22 with High SiO₂/Al₂O₃ Ratio and Its Catalytic Performance on C₄-olefins Cracking Reaction

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