Improved large mesoporous ordered molecular sieves—Stabilization and acid/base functionalization

Autor:	Marga-Martina Pohl, Hendrik Kosslick, Nguyen Dinh Tuyen, Axel Schulz, Vu Anh Tuan, Christian Jaeger, Jens Deutsch, Irene Pitsch, Ligia Frunza
Rok vydání:	2010
Předmět:	Mesoporous organosilica Chemical engineering Nanoporous Chemistry Organic chemistry Surface modification Chemical stability General Chemistry Molecular sieve Heterogeneous catalysis Mesoporous material Catalysis
Zdroj:	Catalysis Today. 152:54-60
ISSN:	0920-5861
Popis:	The preparation of nanoporous materials with enhanced stability using an improved synthesis route using reactive inorganic silica and alumina species is reported. This way improved mesoporous molecular sieves were obtained. The synthesized aluminum substituted mesoporous molecular materials (Al-MMS) contain very large pores of 50–200 A size combined with an improved pore wall thickness. Increased wall thickness and Al substitution lead to an improved chemical stability against alkaline solution. The textural, structural and acid properties are investigated by physico-chemical methods. The catalytic performance acidic materials was tested in the benzoylation reaction; amino functionalized materials were studied in the base catalyzed Michael addition.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8422e07a15552defdb1ce01dd5511fbf https://doi.org/10.1016/j.cattod.2010.03.005 Zobrazit plný text záznamu Full Text from ScienceDirect