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Received January 5, 2008
Accepted March 5, 2008
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Synthesis of isoamyl salicylate using a novel mesoporous titania superacid as a catalyst
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R., China 1School of environment, Jiangsu University, Zhengjiang 212013, P. R., China
tshjiang@ujs.edu.cn
Korean Journal of Chemical Engineering, September 2008, 25(5), 1008-1013(6), 10.1007/s11814-008-0163-6
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Abstract
Mesoporous titania was prepared by hydrothermal method and mesoporous titania solid superacid catalyst was prepared by wet impregnation method. The structure and property of the as-prepared catalysts were characterized by means of XRD, FT-IR and N2 physical adsorption. Isoamyl salicylate was synthesized by using concentrated sulfuric acid and solid superacid as catalyst, respectively. The effects of the molar ratio of raw material, the amount of catalyst, reaction time and reaction temperature on the yield of the product were systematically investigated. The results show that mesoporous titania solid superacid is a good catalyst for synthesizing isoamyl salicylate. The optimum conditions of isoamyl salicylate synthesized by using mesoporous titania solid superacid are the following: the molar ratio of salicylic acid to isoamyl alcohol is 1 : 4, the quantity of catalyst is 1.6 g, the reaction time is 5 h, the reaction_x000D_
temperature is 130 oC and the yield can reach 94.6%.
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