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2012•Journal of the Chilean Chemical SocietyOpen access

ESTERIFICATION OF SALICYLIC ACID USING Ce4+ MODIFIED CATION-EXCHANGE RESIN AS CATALYST

Ming Zhang, Wen Shuai Zhu, Hua Ming Li, Hua Shi, Yong Sheng Yan, ZHIGAO WANG

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Abstract

The esterification of salicylic acid with methanol was carried out over a series of Ce 4+ 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(SO 4 ) 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(SO 4 ) 2 /001×7 in the esterification of salicylic acid with different alcohols was compared.The reusability of Ce(SO 4 ) 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 Ce 4+ modified cation-exchange resins.

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The esterification of salicylic acid with methanol was carried out over a series of Ce 4+ 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(SO 4 ) 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(SO 4 ) 2 /001×7 in the esterification of salicylic acid with different alcohols was compared.The reusability of Ce(SO 4 ) 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 Ce 4+ modified cation-exchange resins.

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Available abstract

The esterification of salicylic acid with methanol was carried out over a series of Ce 4+ 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(SO 4 ) 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(SO 4 ) 2 /001×7 in the esterification of salicylic acid with different alcohols was compared.The reusability of Ce(SO 4 ) 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 Ce 4+ modified cation-exchange resins.

Key concepts: Salicylic acid, Methanol, Catalysis, Chemistry, Ion-exchange resin, Nuclear chemistry, Ion exchange, Organic chemistry

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