Synthesis, characterization, and catalytic properties of stable mesoporous molecular sieve MCM-41 prepared from zeolite mordenite |
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| Authors: | Shan Wang Yuping Li Xiaofeng Li |
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| Institution: | a Institute of Special Chemicals, Catalysis and Porous Materials Di, Taiyuan University of Technology, No. 79 West Yingze Street, Taiyuan City, ShanXi Province 030024, PR China
b The CNPC key laboratory of Catalysis, University of Petroleum, Fuxue Road, Changping, Beijing 102249, PR China |
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| Abstract: | Mesoporous molecular sieves (denoted as M-MCM-41) with ordered hexagonal structure have been successfully synthesized from the assembly of precursors from preformed zeolite Mordenite with CTAB surfactant micelle in alkaline media. The samples were characterized by XRD, N2 adsorption, IR and DTG. The materials exhibit highly hydrothermal stability, as compared with conventional MCM-41. Characterization results indicate that the mesoporous walls of M-MCM-41 contain the secondary building units similar to those in microporous crystal of zeolite Mordenite. In catalytic dealkylation of C10+ aromatic hydrocarbon, M-MCM-41 shows higher activities in comparison with Mordenite and MCM-41, which would be ascribed to the combination of advantages of both MCM-41 (large pores) and Mordenite (strong acidity). Furthermore, this synthesis strategy could be used as a new general method for the preparation of hydrothermally stable mesoporous aluminosilicate materials under alkaline conditions. |
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| Keywords: | Mesoporous molecular sieve Synthesis Characterization MCM-41 M-MCM-41 |
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