| 部份互溶体系4-甲基-2-戊醇和水的过量焓研究 |
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| 引用本文： | 张雅明,王延儒,时钧.部份互溶体系4-甲基-2-戊醇和水的过量焓研究[J].物理化学学报,1988,4(4):411-414. |
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| 作者姓名： | 张雅明 王延儒 时钧 |
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| 作者单位： | Departmant of Chemical Engineering; Nanjing Institute of Chemical Technology |
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| 摘 要： | 使用LKB-2107型流动式微量量热计测定了4-甲基-2-戊醇和水这一部份互溶体系在293.15 K、298.15 K和303.15 K的常压过量焓。测量结果用Redlich-Kister方程作了关联。另外,还用该体系富醇区的过量焓数据拟合NRTL模型的参数与温度关系,推算较高温度下该体系的常压汽液平衡(VLE)组成及泡点。推算值与文献值是接近的。实验试剂4-甲基-2-戊醇由粗品经三次蒸馏提纯,沸点为404.95 K,折光率n_D~(20)1.4113,密度d~(20)0.8067 g cm~(-3),与文献值一致。无水乙醇、尿素均为分析纯。液体试剂在使用前均
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| 收稿时间： | 1986-11-11 |
| 修稿时间： | 1987-04-15 |
STUDIES ON EXCESS ENTHALPIES FOR PARTIALLY MISCIBLE SYSTEM 4-METHYL-2-PENTANOL AND WATER |
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| Zhang Yaming,Wang Yanru,Shi Jin.STUDIES ON EXCESS ENTHALPIES FOR PARTIALLY MISCIBLE SYSTEM 4-METHYL-2-PENTANOL AND WATER[J].Acta Physico-Chimica Sinica,1988,4(4):411-414. |
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| Authors: | Zhang Yaming Wang Yanru Shi Jin |
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| Institution: | Departmant of Chemical Engineering; Nanjing Institute of Chemical Technology |
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| Abstract: | Excess enthalpies of partially miscible system 4-methyl-2-pentanol and water were measured with LKB-2107 Flow Microcalorimeter at 293.15 K, 298.15 K, 303.15 K under normal pressure. The results obtained were fitted with Redlich-Kister equation. The NRTL parameters correlated from the H~E data measured on rich alcohol region were used to predict the vapor-liquid equilibrium under normal pressure with mean deviations of vapor composition and bubble point of 0.02 mole fraction and 1.03 K from the values in literature respectively. |
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