Process optimization on synthesis of methyl benzoate catalyzed by NaHSO4
Benzoic acid and methanol were used as raw materials and NaHSO4 as the catalyst.Methyl benzoate was synthesized through catalysts under the conditions of heating,stirring and reflux.The effects of catalyst dosage,reaction time,molar ratio of methanol to benzoic acid and reaction tempera-ture on the yield of methyl benzoate were investigat-ed,and the optimal process conditions were deter-mined.The results showed that the optimal process conditions were as follows:the catalyst dosage was 10.0%of the mass of benzoic acid,the reaction time was 10 h,the ratio of alcohol to acid was 10∶1,the reaction temperature was 65℃,and no water ab-sorbent was added.At this moment,the yield of methyl benzoate was 95.03%.
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