L. Fusheng
2008
Citations
0
Influential Citations
3
Citations
Journal
Journal of Molecular Catalysis
Abstract
Acidic functionalized ionic liquids were synthesized and characterized. Tributyl citrate (TBC) was synthesized using acidic functionalized ionic liquids as catalysts. According to the study of catalytic activity and the reusability of various ionic liquids, [HSO3-pmim] HSO4 was chosen to synthesize TBC as the catalyst. The effects of the reaction conditions on the reaction results, such as the amount of catalyst, molar ratio of acid and alcohol, reaction time, were examined and the optimal conditions were obtained. The optimal conditions were as follows: w (catalyst)∶w (reactants)=8.0%, n (1-butyl alcohol)∶n (citric acid)=5.5∶1, 110~150 ℃, 3 h. Under the optimal reaction conditions, the conversion could be 99.0%. Separated from the products, [HSO3-pmim] HSO4 could be reused 8 times without any disposal and the conversion could reach 95.2%.