Sulfonic acid functionalized periodic mesoporous organosilicas as acetalization catalysts
作者： M. Rat , M.H. Zahedi-Niaki , S. Kaliaguine , T.O. Do
DOI: 10.1016/J.MICROMESO.2007.09.010
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摘要: Abstract Three types of sulfonic acid functionalized hybrid mesoporous materials AS-MES (arene ethane-silica), PS-MES (propyl ethane-silica) and AS-SBA-15 SBA-15), were synthesized characterized using XRD, BET, TEM 13 C MAS NMR techniques. The catalytic properties these organic–inorganic solids studied the liquid phase acetalization heptanal by 1-butanol at 75 °C, which is a water generating reaction. specific activities per site compared with those HY zeolite Amberlyst-15. Sulfonic exhibit good activity. higher conversion sample associated its hydrophobic organosilica framework strength sites. results show predominant effect polarity channels walls on reaction rate, catalyst deactivation water.
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