Measurement and correlation of vapor pressure for 1-butyl-3- methylimidazolium dibutylphosphate and water/alcohol

常仁杰

doi:10.3969/j.issn.0438-1157.2011.z2.005

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Measurement and correlation of vapor pressure for 1-butyl-3- methylimidazolium dibutylphosphate and water/alcohol

更新时间：2025-12-10

- Measurement and correlation of vapor pressure for 1-butyl-3- methylimidazolium dibutylphosphate and water/alcohol
- CIESC Journal Issue S2, Pages: 26-30(2011)
- 作者机构：
  
  大连理工大学化工与环境生命学部
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2011.z2.005
  CLC：
- Online First：20 December 2011，
  
  Published：20 December 2011
- 稿件说明：
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常仁杰. Measurement and correlation of vapor pressure for 1-butyl-3- methylimidazolium dibutylphosphate and water/alcohol[J]. CIESC Journal, 2011, (S2): 26-30.
DOI：

常仁杰. Measurement and correlation of vapor pressure for 1-butyl-3- methylimidazolium dibutylphosphate and water/alcohol[J]. CIESC Journal, 2011, (S2): 26-30. DOI： 10.3969/j.issn.0438-1157.2011.z2.005.

摘要

合成了离子液体1-丁基-3-甲基咪唑磷酸二丁酯(［BMIM］［DBP］)，用静态法测量了［BMIM］［DBP］与H2O/CH3OH/C2H5OH 所形成的3个二元体系的汽液平衡数据，并用NRTL模型对活度因子进行关联。实验结果表明，［BMIM］［DBP］+H2O/CH3OH/C2H5OH二元体系汽液平衡数据对Roualt定律呈负偏差，说明3个体系均可作为吸收式热泵的潜在工质。3个体系的关联结果与实验数据的平均相对误差分别为2.37%、2.51%和1.89%。

Abstract

The ionic liquid 1-butyl-3-methylimidazolium dibutylphosphate (［BMIM］［DBP］) was prepared and vapor pressure for three binary systems composed of ［BMIM］［DBP］and water

methanol or ethanol were measured at different temperature and mole fraction with static method

the data was correlated with NRTL activity coefficient model. The results indicate that the binary solutions are all negative deviation from the Roualt’s Law

which make them to be suitable as candidates for working pairs in industrial applications of absorption heat pumps. Meanwhile the experimental data can be well correlated by NRTL equations with the average relative deviations (ARD) of 2.37%

2.51% and 1.89%

respectively.

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