Collect. Czech. Chem. Commun. 2008, 73, 1112-1124

Synthesis of Fructone and Acylal Using Hexagonally Ordered Mesoporous Aluminosilicate Catalyst

Ajayan Vinua,b,*, Josena Justusa, Veerappan Vaithilingam Balasubramaniana, Shivappa Basappa Halligudia, Katsuhiko Arigaa and Toshiyuki Morib

a International Center for Materials Nanoarchitectonics, World Premier International Research Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
b Nano-Ionics Materials Group, Fuel Cell Materials Center, 1-1 Namiki, Tsukuba 305-0044, Japan


Hexagonally ordered mesoporous AlSBA-15 with different nSi/nAl ratios have been hydrothermally synthesized using the non-ionic copolymer Pluronic P123 surfactant as the structure directing agent and characterized by XRD, N2 adsorption-desorption, and ammonia-temperature programmed desorption (pyridine-TPD). Acetal and acylal formation reactions of organic carbonyl compounds were efficiently catalyzed by AlSBA-15 under liquid-phase reaction conditions and the results were compared with the MFI, BEA and AlMCM-41(23). Of the catalysts studied, AlSBA-15(45) showed the highest activity in both the acetalization and acylal reactions of the carbonyl compounds under the optimized reaction conditions, and could be recycled several times without loss in activity. AlSBA-15(45) catalyst is highly stable, efficient, chemoselective, and environmental friendly, which could open the possibility for environment benign approach for the synthesis of acetals, acylals and its derivatives under mild reaction conditions.

Keywords: Adsorption; Mesoporous; AlSBA-15; Silica; Acetal; Acylal.

References: 72 live references.