Synthesis of [Al]-SSZ-31 by dry-gel conversion (DGC) method

Authors
Bandyopadhyay, R Kubota, Y Ogawa, M Sugimoto, N Fukushima, Y Sugi, Y
Citation
R. Bandyopadhyay et al., Synthesis of [Al]-SSZ-31 by dry-gel conversion (DGC) method, CHEM LETT, (4), 2000, pp. 300-301
Citations number
11
Categorie Soggetti
Chemistry
Journal title
CHEMISTRY LETTERS
ISSN journal
03667022 → ACNP
Issue
4
Year of publication
2000
Pages
300 - 301
Database
ISI
SICI code
0366-7022(20000405):4<300:SO[BDC>2.0.ZU;2-7
Abstract
Synthesis of large-pore zeolite [Al]-SSZ-31 has been studied by dry-gel con version method using 1,8-diazoniaoctane type of structure-directing agent. Pure SSZ-31 was obtained with NaOH/SiO2 = 0.05-0.12, while the product was contaminated with MFI below or above this range. Snowtex-40 (colloidal), as the silica source yielded SSZ-31, while Cab-O-Sil M-5 and Ludox AS-40 yiel ded mostly MFI phase. A phase change: BEA-->SSZ-31-->MFI was observed with time course at optimum NaOH/SiO2.