Date of Publication:2014-01-01

Journal:石油学报 石油加工

Issue:2

Page Number:204-210

ISSN No.:1001-8719

Abstract:Mesoporous ZSM-5 zeolite was synthesized by seed silanization with (γ-aminopropyl)-triethoxysilane (APTES) as the silylating agent, and characterized by XRD, FT-IR, SEM, N2 adsorption-desorption and NH3-TPD. The results showed that the ZSM-5 zeolite with mesoporous structure could be obtained by using this synthesis method. The mesoporous ZSM-5 zeolite possessed the crystal morphology with the average particle size in the range of 300-500 nm, which was aggregated by nanocrystals. The crystal size and pore structure of the zeolite could be tuned by varying the amount of APTES in zeolite synthesis. The initial 2-MN conversion of 2-methylnaphthalene methylation with methanol to produce 2, 6-dimethylnaphthalene over the mesoporous ZSM-5 zeolite was 40% (30% for non-APTES zeolite). Within 10 h of reaction, the 2-MN conversion was still 32% (16% for non-APTES zeolite).

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