Synthesis of Tributyl Citrate Using Preyssler Acid as Catalyst.

The synthesis condition of tributyl citrate using H14 [NaP5W30O110] the catalyst was investigated. The results showed that the esterification yield of 95.2% was obtained under the optimum esterification condition as follows: molar ratio of n - utanol to citric acid 3.5: 1, reaction time 6 h, catalyst dosage 2% of citric acid mass. The catalyst possessed good effects of repeated use. [ABSTRACT FROM AUTHOR]