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| Synthesis of epoxy soybean oil catalyzed by tetrabutylammonium bromide |
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| DOI： |
| KeyWord:solvent free tetrabutylammonium bromide tert-butyl hydroperoxide epoxy soybean oil |
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| Abstract: |
| In the absence of solvent and carboxylic acid, epoxy soybean oil was synthesized with tetrabutylammonium bromide as phase transfer catalyst and TBHP (65%) as oxygen source. The effects of reaction time, reaction temperature, dosage of catalyst and molar ratio of TBHP to carbon-carbon double bond on the epoxy reaction were investigated, and the reaction mechanism was analyzed by FTIR. The results showed that the optimal reaction conditions were obtained as follows: reaction temperature 65?℃, reaction time 3 h, dosage of catalyst 3.0 g(soybean oil mass 10.0 g), molar ratio of TBHP to carbon-carbon double bond 1.5∶?1.Under the optimal conditions, the catalytic epoxy result was the best, and the epoxy value of the product, conversion and selectivity could reach 3.5%, 53.9% and 77.5%, respectively. The method had the items of simply process, easy operation and low cost, and it overcame the drawbacks of the traditional methods of using carboxylic acids and solvents. |
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