| 离子交换树脂催化乳酸与异丁醇及正丁醇酯化反应的动力学研究 |
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| 引用本文： | 屈一新,彭少君,王水,张志强,王际东. 离子交换树脂催化乳酸与异丁醇及正丁醇酯化反应的动力学研究[J]. 中国化学工程学报, 2009, 17(5): 773-780. DOI: 10.1016/S1004-9541(08)60276-1 |
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| 作者姓名： | 屈一新 彭少君 王水 张志强 王际东 |
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| 作者单位： | Beijing Key Laboratory of Bioprocess, Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| 基金项目： | 国家重点基础研究发展规划(973计划) |
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| 摘 要： | The esterification reactions of lactic acid with isobutanol and n-butanol have been studied in the presence of acid ion-exchange resin Weblyst D009. The influences of catalyst loading, stirrer speed, catalyst particle size, initial reactant molar ratio and temperature on the reaction rate have been examined. Experimental kinetic data were correlated by using the Pseudo-homogeneous, Langmuir-Hinshelwood and Eley-Rideal models. Nonideality of the liquid phase was taken into account by using activities instead of molar fractions. The activity coefficients were calculated according to the group contribution method UNIFAC. Provided that the nonideality of the liquid is taken into account, the esterification kinetics of lactic acid with isobutanol and n-butanol catalyzed by the acid ion-exchange resin can be described using all three models with reasonable errors.
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| 关 键 词： | kinetics esterification lactic acid isobutanol n-butanol ion exchange resin |
| 收稿时间： | 2009-03-19 |
| 修稿时间： | 2009-7-12 |
Kinetic Study of Esterification of Lactic Acid with Isobutanol and n-Butanol Catalyzed by Ion-exchange Resins |
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| QU Yixin,PENG Shaojun,WANG Shui,ZHANG Zhiqiang,WANG Jidong. Kinetic Study of Esterification of Lactic Acid with Isobutanol and n-Butanol Catalyzed by Ion-exchange Resins[J]. Chinese Journal of Chemical Engineering, 2009, 17(5): 773-780. DOI: 10.1016/S1004-9541(08)60276-1 |
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| Authors: | QU Yixin PENG Shaojun WANG Shui ZHANG Zhiqiang WANG Jidong |
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| Affiliation: | Beijing Key Laboratory of Bioprocess, Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | The esterification reactions of lactic acid with isobutanol and n-butanol have been studied in the presence of acid ion-exchange resin Weblyst D009. The influences of catalyst loading, stirrer speed, catalyst particle size, initial reactant molar ratio and temperature on the reaction rate have been examined. Experimental kinetic data were correlated by using the Pseudo-homogeneous, Langmuir-Hinshelwood and Eley-Rideal models. Nonideality of the liquid phase was taken into account by using activities instead of molar fractions. The activity coefficients were calculated according to the group contribution method UNIFAC. Provided that the nonideality of the liquid is taken into account, the esterification kinetics of lactic acid with isobutanol and n-butanol catalyzed by the acid ion-exchange resin can be described using all three models with reasonable errors. |
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| Keywords: | kinetics esterification lactic acid isobutanol n-butanol ion exchange resin |
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