Title: Synthesis and characterisation of ZSM-5/SBA-15 composite material

Authors: Le Thi Hoai Nam; Tran Quang Vinh; Nguyen Duc Hoa

Addresses: Department of Green Chemistry, Institute of Chemistry, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Street, Cau Giay district, Hanoi, Vietnam ' Department of Green Chemistry, Institute of Chemistry, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Street, Cau Giay district, Hanoi, Vietnam ' Department of Green Chemistry, Institute of Chemistry, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Street, Cau Giay district, Hanoi, Vietnam

Abstract: ZSM-5/SBA-15 composite materials were successfully synthesised by a hydrothermal treatment method including three steps: 1) microporous phase seed formation (seed 1); 2) precursor addition (seed 2); 3) formation of the ZSM-5/SBA-15 composite material. The obtained samples were characterised by XRD, SEM, TEM, TPD-NH₃, ²⁷Al MAS NMR, ¹H MAS NMR, and N₂adsorption/desorption. It could be shown that the formation of both micro- and mesopores strongly depends on the duration and temperature of the above-mentioned crystallisation steps. The results obtained from XRD, SEM, TEM, and N₂ adsorption/desorption indicated that the ZSM-5/SBA-15 composite materials have both microporous and mesoporous properties. The composite nature of the samples was demonstrated by SEM and TEM studies. The high acid sites number and strength of the ZSM-5/SBA-15 composite materials were shown using ²⁷Al MAS NMR, ¹H MAS NMR, and TPD-NH₃ methods.

Keywords: ZSM-5/SBA-15; composite materials; multiporous composites; mesoporous composites; hydrothermal treatment.

DOI: 10.1504/IJNT.2015.067904

International Journal of Nanotechnology, 2015 Vol.12 No.5/6/7, pp.466 - 474

Published online: 08 Mar 2015 *

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