Relevant articles and documents
Improved large mesoporous ordered molecular sieves - Stabilization and acid/base functionalization
Kosslick, Hendrik Pitsch, Irene Deutsch, Jens Pohl, Marga-Martina Schulz, Axel Tuan, Vu Anh Tuyen, Nguyen Dinh Frunza, Ligia Jaeger, Christian
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? 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.
New magnesium oxide fluorides with hydroxy groups as catalysts for Michael additions
Prescott, Hillary A. Li, Zhi-Jian Kemnitz, Erhard Deutsch, Jens Lieske, Heiner
Amorphous materials - magnesium oxide fluoride with hydroxy groups - of high surface area were prepared for the first time by a soft sol-gel method involving initial fluorination and subsequent hydrolysis of the fluorinated gel. Their structural propertie
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