Influence of Structure-directing Agent on Zeolite Synthesis

Atsushi SUZUKI, Zhengbao WANG, Cheol-Hee AHN, Tsuneji SANO* and Kazuo SOGA

School of Materials Science, Japan Advanced Institute of Science and Technology; Tatsunokuchi, Ishikawa 923-1292 Japan

To get more information concerning zeolite synthesis in the presence of 1-butanol(n-BuOH), influences of the alkali metal cation and the synthesis conditions on the zeolite synthesis were investigated. It was found that highly crystalline TON(Theta-1), MER(Merlinoite) and LTL(L) type zeolites were synthesized when KOH was employed as an alkali source, whereas MFI(ZSM-5) and MOR(Mordenite) type zeolites for NaOH. Characterization of zeolites obtained was conducted using X-ray diffraction, scanning electron microscopy, FT-IR, thermal analysis, 13C and 27Al MAS NMR. From the results of FT-IR and 13C CP MAS NMR measurements of as-made zeolites, it was concluded that n-BuOH molecules were occluded in the zeolitic pores of TON and MFI type zeolites, while no n-BuOH molecules for MOR, MER and LTL type zeolites.

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