Synthesis of [Al]-SSZ-31 by Dry-Gel Conversion (DGC) Method

Synthesis of [Al]-SSZ-31 by Dry-Gel Conversion (DGC) Method

Synthesis of large-pore zeolite [Al]-SSZ-31 has been studied by dry-gel conversion 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), a...

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Veröffentlicht in:Chemistry letters 2000-04, Vol.29 (4), p.300-301
Hauptverfasser: Bandyopadhyay, Rajib, Kubota, Yoshihiro, Ogawa, Masami, Sugimoto, Noriaki, Fukushima, Yoshiaki, Sugi, Yoshihiro
Format: Artikel
Sprache:eng
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Zusammenfassung:Synthesis of large-pore zeolite [Al]-SSZ-31 has been studied by dry-gel conversion 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 yielded mostly MFI phase. A phase change: BEA→SSZ-31→MFI was observed with time course at optimum NaOH/SiO2.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.2000.300