Abstract
The esterification of salicylic acid with methanol was carried out over a series of Ce4+ modified cation-exchange resins. The effect of different reaction conditions was studied on the conversion of salicylic acid, and the optimal reaction parameters were obtained. The experimental results indicated that Ce(SO4)2/001×7 was an effective catalyst for the synthesis of methyl salicylate. The conversion of salicylic acid could reach 93.3% while its selectivity was more than 99.0%. SEM-EDS and TG-DSC analysis were employed to characterize the structure and property of the catalyst. Besides, the catalytic performance of Ce(SO4) 2/001×7 in the esterification of salicylic acid with different alcohols was compared. The reusability of Ce(SO4)2/ 001×7 was also studied by using salicylic acid and methanol as model substrates. The mechanism was proposed for the esterification of salicylic acid with methanol over Ce4+ modified cation-exchange resins.
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Zhang, M., Zhu, W. S., Li, H. M., Shi, H., Yan, Y. S., & Wang, Z. G. (2012). Esterification of salicylic acid using Ce4+ modified cation-exchange resin as catalyst. Journal of the Chilean Chemical Society, 57(4), 1477–1481. https://doi.org/10.4067/S0717-97072012000400029
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