Synthesis of mesoporous MCM-48 with a mixed non-ionic-cationic surfactant templating pathway

Citation
W. Zhao et al., Synthesis of mesoporous MCM-48 with a mixed non-ionic-cationic surfactant templating pathway, CHIN SCI B, 46(17), 2001, pp. 1436-1439
Citations number
9
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Multidisciplinary
Journal title
CHINESE SCIENCE BULLETIN
ISSN journal
1001-6538 → ACNP
Volume
46
Issue
17
Year of publication
2001
Pages
1436 - 1439
Database
ISI
SICI code
1001-6538(200109)46:17<1436:SOMMWA>2.0.ZU;2-8
Abstract
In a hydrothermal system, we studied the Influence of nonionic surfactant p oly(ethylenglycol) monooctylphenyl ether (OP-10) on the self-assembling pro cess of mesoporous molecular sieve MCM-48 and found that OP-10 can decrease the amount of cationic surfactant needed for the preparation of MCM-48 fur ther by its stronger van der Waals force, shorten the synthetic period and produce MCM-48 with more extensive cross-linked framework. By altering the ratio of nonionic surfactant to cationic surfactant, we could obtain the me soporous molecular sieves with different structures. When the crystallizati on temperature exceeded-140 degreesC, OP-10 would separate from micelle, lo se Its amphiphilic character, and then hamper the conversion of lamellar me soporous molecular sieves Into microporous materials.