| 硫酸氢钠催化合成混合二元酸二甲酯的研究 |
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| 引用本文： | 赵献增,李天仚,王冬梅,张文楠.硫酸氢钠催化合成混合二元酸二甲酯的研究[J].河南科学,2009,27(11):1370-1372. |
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| 作者姓名： | 赵献增 李天仚 王冬梅 张文楠 |
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| 作者单位： | 河南省精细化工重点实验室,郑州,450002 |
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| 基金项目： | 河南省省属科研单位社会公益项目预研专项 |
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| 摘 要： | 以混合二元酸和甲醇为原料，以硫酸氢钠为催化剂，合成了混合二元酸二甲酯．考察了醇酸量的比反应温度、催化剂用量、反应时间对混合二元酸二甲酯收率的影响．反应温度低于80℃将使混合酸二元酸二甲酯收率下降；提高醇酸量的比使反应温度下降，导致二甲酯收率降低；酯化时间以4h为宜，继续延长反应时间将引发副反应；硫酸氢钠催化剂适宜的使用量为20—30g／（mol酸）．单次酯化，混合二元酸二甲酯收率最高为80％．
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| 关 键 词： | 混合二元酸二甲酯 硫酸氢钠 催化酯化 |
Study on Synthesis of Mixed Dibasic Acid Dimethyl Esters Catalyzed by Sodium Bisulfate |
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| Zhao Xianzeng,Li Tianxian,Wang Dongmei,Zhang Wennan.Study on Synthesis of Mixed Dibasic Acid Dimethyl Esters Catalyzed by Sodium Bisulfate[J].Henan Science,2009,27(11):1370-1372. |
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| Authors: | Zhao Xianzeng Li Tianxian Wang Dongmei Zhang Wennan |
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| Affiliation: | (Henan Key Laboratory of Fine Chemicals, Zhengzhou 450002, China) |
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| Abstract: | Mixed dibasic acid dimethyl esters(DME)were synthesized by mixed dibasic acid(DBA)and methanol catalyzed by sodium bisulfate. The effects of the molar ratio of reactants,reaction temperature and reactant time, amount of catalyst on the yield of DME were determined. The yield of DME drops as temperature below 80 ℃ and molar ratio(methanol/DBA)raise. Favourable esterfication time is 4 h. Favourable amount of the catalyst is 20～30 g(/1 mol DBA). Maximum yield of DBE is 80 % on mono-esterification. |
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| Keywords: | mixed dibasic acid dimethyl esters sodium bisulfate catalysitic esterification |
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