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| 催化合成脂肪族二元酸烷氧基酯的反应动力学研究 | |
| 引用本文： | 陈慕华,方亮,刘准,曹惠庆,朱新宝.催化合成脂肪族二元酸烷氧基酯的反应动力学研究[J].化学工业与工程技术,2012,33(6):1-3. |
| 作者姓名： | 陈慕华 方亮 刘准 曹惠庆 朱新宝 |
| 作者单位： | 1. 南京林业大学化工学院,江苏南京210037;江苏省醇醚工程技术研究中心,江苏无锡214441 2. 南京林业大学化工学院,江苏南京,210037 3. 江苏省醇醚工程技术研究中心,江苏无锡,214441 |
| 基金项目： | 江苏高校优势学科建设工程资助项目;江苏省产学研前瞻性研究项目 |
| 摘 要： | 脂肪族二元酸烷氧基酯是一类性能优良的耐寒性增塑剂产品。以二元羧酸及乙二醇丁醚为原料,在硫酸催化下合成烷氧基酯,测定了表观速率常数,并建立了反应体系的酯化反应动力学模型。实验结果表明,在453.15～473.15K,合成脂肪族二元酸烷氧基酯的宏观动力学符合三级不可逆反应特征,以C5至C8的二元羧酸为原料的酯化过程其反应表观活化能在220～250kJ/mol内。 |
| 关 键 词： | 脂肪族二元酸烷氧基酯 酸催化 酯化 动力学 |
Kinetics for catalytic synthesis of aliphatic dicarboxylic acid alkoxy ethyl ester |
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| CHEN Muhua , FANG Liang , LIU Zhun , CAO Huiqing , ZHU Xinbao.Kinetics for catalytic synthesis of aliphatic dicarboxylic acid alkoxy ethyl ester[J].Journal of Chemical Industry & Engineering,2012,33(6):1-3. | |
| Authors: | CHEN Muhua FANG Liang LIU Zhun CAO Huiqing ZHU Xinbao |
| Affiliation: | 1,2(1.College of Chemical Engineering,Nanjing Forestry University,Nanjing 210037,China; 2.Engineering Research Center for Alcohol Ether of Jiangsu Province,Wuxi 214441,China) |
| Abstract: | Aliphatic dicarboxylic acid alkoxy ethyl ester is synthesized from aliphatic dicarboxylic acid and ethyle glycol monobutyl ether by using sulfuric acid as catalyst. Apparent rate constants for those acid-catalyzed homogeneous esterification reactions are obtained, and apparent kinetics models are established. The results show that the synthesis of aliphatic dicarbox- ylic acid alkoxy ethyl ester under the temperature from 453.15 to 473.15 K is the third order irreversible reaction. According to the kinetic data of those experiments using different aliphatic dicarboxylic acid （C5-C8）, activation energy values （Ea） are all in the range from 220 to 250 kJ/mol. |
| Keywords: | Aliphatic diearboxylic acid alkoxy ester Acid catalysis Esterification Kinetics |
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