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Titolo:
Synthesis of mesoporous MCM-48 with a mixed non-ionic-cationic surfactant templating pathway
Autore:
Zhao, W; Yao, JD; Huang, XD; Li, QZ;
Indirizzi:
Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China Fudan Univ Shanghai Peoples R China 200433 nghai 200433, Peoples R China
Titolo Testata:
CHINESE SCIENCE BULLETIN
fascicolo: 17, volume: 46, anno: 2001,
pagine: 1436 - 1439
SICI:
1001-6538(200109)46:17<1436:SOMMWA>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOLECULAR-SIEVES;
Keywords:
MCM-48; mixed template; poly(ethylenglycol) monooctylphenyl ether; hydrothermal synthesis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
9
Recensione:
Indirizzi per estratti:
Indirizzo: Li, QZ Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China Fudan UnivShanghai Peoples R China 200433 00433, Peoples R China
Citazione:
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

Abstract

In a hydrothermal system, we studied the Influence of nonionic surfactant poly(ethylenglycol) monooctylphenyl ether (OP-10) on the self-assembling process 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 further by its stronger van der Waals force, shorten the synthetic period andproduce MCM-48 with more extensive cross-linked framework. By altering theratio of nonionic surfactant to cationic surfactant, we could obtain the mesoporous molecular sieves with different structures. When the crystallization temperature exceeded-140 degreesC, OP-10 would separate from micelle, lose Its amphiphilic character, and then hamper the conversion of lamellar mesoporous molecular sieves Into microporous materials.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 12:39:31