Micro-/meso-porous stannosilicate composites (Sn-MFI/MCM-41) via two-step crystallization process: process parameter-phase relationship

TitleMicro-/meso-porous stannosilicate composites (Sn-MFI/MCM-41) via two-step crystallization process: process parameter-phase relationship
Publication TypeJournal Article
Year of Publication2010
AuthorsNiphadkar, PS, Garade, AC, Jha, RKumar, Rode, CV, Joshi, PN
JournalMicroporous and Mesoporous Materials
Volume136
Issue1-3
Pagination115-125
Date PublishedDEC
ISSN1387-1811
Keywordscomposites, Crystallization, Micro-/meso-porous stannosilicate, p-Cresol hydroxyalkylation, Sn-MCM-41, Sn-MFI
Abstract

Sn-MFI/MCM-41 composite material was successfully synthesized by monitoring the re-crystallization time in a simple two-step crystallization process. The length of period allowed for the recrystallization of the precursor species was found to be a controlling factor to achieve either the end members viz. Sn-MCM-41 and Sn-MFI or Sn-MFI/MCM-41 composite material. Powder XRD, FTIR, SEM, TEM, nitrogen sorption measurement, DRUV-vis and hydroxyalkylation of p-cresol reaction were used as the characterization tools. Attempts were also made to establish the relationship between type of phase formed and the process parameters such as aging time, re-crystallization temperature, time and molar ratios of TPAOH/SiO(2), CTMABr/SiO(2) and SiO(2)/SnO(2) in the gel. (C) 2010 Elsevier Inc. All rights reserved.

DOI10.1016/j.micromeso.2010.08.005
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)3.220
Divison category: 
Catalysis and Inorganic Chemistry
Chemical Engineering & Process Development