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ID 46481
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title alternative
Influence of Silica Source on Zeolite Synthesis in the Presence of 1-Butanol <Note>
creator
Kubota, Toshikazu
Oumi, Yasunori
Uozumi, Toshiya
NDC
Chemistry
abstract
Synthesis of high-silica zeolites in the presence of 1-butanol(n-BuOH) was conducted under various conditions to explore the role of silica source, aging time, and n-BuOH.
It was found that the solubility of the silica source in the aqueous phase was a critical factor for the formation of zeolite precursor when KOH was employed as an alkali source. MFI(ZSM-5) type zeolites were obtained when fumed silica with small BET specific surface area was employed, whereas TON(Theta-1) type zeolites were formed when fumed silica with large BET specific surface area was employed. It was also found that the addition of n-BuOH suppressed the formation of cristobalite. This is probably due to the reduction of the Si concentration in the aqueous phase of the synthesis gel. FT-IR and 13C CP MAS NMR measurements of as-made zeolites suggested that n-BuOH molecules were occluded in the zeolitic pores of TON and MFI type zeolites at the initial stage of crystallization.
journal title
Journal of the Chemical Society of Japan : chemistry and industrial chemistry
volume
Volume 2000
issue
Issue 10
start page
733
end page
737
date of issued
2000-10-10
publisher
日本化学会
issn
0369-4577
ncid
publisher doi
language
jpn
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2000 The Chemical Society of Japan
relation url
department
Graduate School of Engineering