| 柠檬酸与正丁醇合成柠檬酸三丁酯的热力学分析 |
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| 引用本文： | 杨浩,王建红,乔聪震.柠檬酸与正丁醇合成柠檬酸三丁酯的热力学分析[J].石油化工,2011,40(2):171-174. |
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| 作者姓名： | 杨浩 王建红 乔聪震 |
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| 作者单位： | 河南大学,化学化工学院催化材料与工程实验室,河南,开封,475004 |
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| 摘 要： | 采用Benson基团贡献法,对柠檬酸和正丁醇合成柠檬酸三丁酯反应体系进行了反应焓变、熵变、吉布斯自由能变和平衡常数的计算;在300～1 000 K温度范围内,研究了该酯化反应的焓变、熵变和吉布斯自由能变随反应温度的变化以及正丁醇与柠檬酸的摩尔比(醇酸比)对柠檬酸平衡转化率的影响。计算结果表明,该反应为吸热反应;在考察温度范围内,该反应在热力学上是可行的;吉布斯自由能变随反应温度的升高而降低,说明高温有利于反应的进行;醇酸比的提高可以使柠檬酸的平衡转化率增大,理论上最高转化率可达0.990。
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| 关 键 词： | 柠檬酸 正丁醇 柠檬酸三丁酯 热力学分析 |
Thermodynamic Analysis for Synthesis of Tributyl Citrate from Citric Acid and n-Butanol |
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| Yang Hao,Wang Jianhong,Qiao Congzhen.Thermodynamic Analysis for Synthesis of Tributyl Citrate from Citric Acid and n-Butanol[J].Petrochemical Technology,2011,40(2):171-174. |
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| Authors: | Yang Hao Wang Jianhong Qiao Congzhen |
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| Affiliation: | Yang Hao,Wang Jianhong,Qiao Congzhen (Depatment of Chemistry and Chemical Engineering,Laboratory of Catalytic Materials and Engineering,Henan University,Kaifeng Henan 475004,China) |
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| Abstract: | In order to obtain the thermodynamic data of the synthesis of tributyl citrate from citric acid and n-butanol,the standard molar enthalpy,Gibbs free energy and molar heat capacity of the reactants and the products were calculated by Benson group contribution method.The enthalpy change, free energy change,equilibrium constant and equilibrium conversion of the reaction were calculated according to the principles of chemical thermodynamics in the temperature range of 300-1 000 K.The effect of mole ratio of n-b... |
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| Keywords: | citric acid n-butanol tributyl citrate thermodynamics |
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