Three-dimensional mesoporous cage type aluminosilicate: An efficient catalyst for ring opening of epoxides with aromatic and aliphatic amines

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• 作者：R. Chakravarti ; H. Oveisi ; P. Kalita ; R.R. Pal ; S.B. Halligudi ; M.L. Kantam ; A. Vinu
• 关键词：Catalysis ; Epoxides ; β ; -Amino alcohols ; Mesoporous ; Aluminosilicates
• 刊名：Microporous and Mesoporous Materials
• 出版年：2009
• 出版时间：1 July 2009
• 年：2009
• 卷：123
• 期：1-3
• 页码：338-344
• 全文大小：1490 K

文摘

Three-dimensional mesoporous aluminosilicate catalysts (AlKIT-5) with cage type porous structure were prepared using Pluronic F127 as a structure-directing agent in a highly acidic medium. The catalysts were characterized by XRD, N₂ adsorption, and TPD of NH₃. The acidity and the acid strength of the AlKIT-5 were controlled by varying the amount of Al in the silica framework of the mesochannels. Further, the catalysts were utilized for a facile nucleophilic ring opening of epoxides with various aromatic and aliphatic amines under mild reaction condition. The reactions were found to be highly selective and efficient, affording the corresponding β-aminoalcohols in good yield. It was found that the catalyst is recyclable and the activity of the catalyst was not diminished even after several reaction cycles.