Title: Study on synthesis of 4-acetoxybenzoic acid with tungstophosphoric acid as catalyst
Abstract: 4-acetoxybenzoic acid was prepared from p-hydroxybenzoic acid and acetic anhydride using tungstophosphoric acid as catalyst.Studied the dosage of acetic anhydride,temperature,reaction time,phosphorus tungsten acid to synthesize the factors such as the dosage of the influence of products,research shows that,in comparison with malefic acid yield experiments,the effects on n(acid) : n(acetic anhydride) = 1:3 supreme;when the reaction yield In the reaction temperature on the influence of the yield of product in 90~99℃,when yield best;In reaction time influences on the product yield when,in 40minutes best,yield response supreme;In catalyst dosage of the product yield in the influence of 0.5 g,yield the best.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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