SYNTHESIS OF SAPO-35 IN NONAQUEOUS GELS

Citation
N. Venkatathri et al., SYNTHESIS OF SAPO-35 IN NONAQUEOUS GELS, Journal of the Chemical Society. Faraday transactions, 93(18), 1997, pp. 3411-3415
Citations number
25
Categorie Soggetti
Chemistry Physical","Physics, Atomic, Molecular & Chemical
ISSN journal
09565000
Volume
93
Issue
18
Year of publication
1997
Pages
3411 - 3415
Database
ISI
SICI code
0956-5000(1997)93:18<3411:SOSING>2.0.ZU;2-M
Abstract
The molecular sieve SAPO-35 has been synthesized in a non-aqueous medi um for the first time using a new template, hexamethyleneimine. It has been characterized by XRD, SEM, TG-DTA, MAS NMR, FTIR and adsorption techniques. The study indicates that Si replaces mainly the P atoms in the AlPO4-35 framework giving rise to three different Bronsted acid b ridging hydroxy groups, with IR absorptions at 3580, 3604 and 3631 cm( -1). The three bands are attributed to Si incorporation in different t etrahedral positions in double six-membered rings and single six-membe red rings.