Esterifications of carboxylic acids and alcohols catalyzed by Al2(SO4)3 · 18H2O under solvent-free condition
作者:Li Gang、Pang Wenhui
DOI:10.1134/s0023158410040154
日期:2010.8
Esterifications of equimolar mixture of carboxylic acids and alcohols can be effectively catalyzed by Al-2(SO4)(3) center dot 18H(2)O under solvent-free condition. The esterification catalyzed by Al-2(SO4)(3) center dot 18H(2)O is a promising green method thanks to no need of organic solvent, no pollution, no causticity and ease to handle after reaction. This catalyst is of a low toxicity (usually it is used as purifying agent for drinking water), low-cost compound and is easily separated from the reaction mixture by simple filtration. Moreover, the catalyst can be recycled for the further esterification and the conversion does not evidently decrease.