何丽娟,马文清,孙尚志,王淑旭,吴夏梦

• 1:内蒙古科技大学 能源与环境学院，内蒙古 包头 014010

摘要(Abstract)：

针对CO₂-离子液体二元体系的相平衡问题，搭建了一套汽液相平衡数据测定系统，获得了CO₂-[emim][Tf₂N]二元体系在273.15~328.15 K的汽液相平衡数据，利用PR（Peng-Robinson）状态方程、NRTL（non-random two liquid）活度系数模型结合WS（Wong-Sandler）混合规则对实验数据进行关联，并应用此模型计算得到CO₂-[emim][Tf₂N]二元体系的超额焓。结果表明：关联得到的压力计算值与实验值相比，两者的平均相对偏差为3.87%，与其他模型对比所选模型偏差最小，能够成功地关联CO₂-[emim][Tf₂N]二元体系汽液相平衡数据。进一步完善了CO₂-离子液体二元体系的关联模型。

关键词(KeyWords)： CO₂;[emim][Tf₂N];汽液相平衡;超额焓

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金（51566014）；内蒙古自治区自然科学基金（2015MS0547）。

作者(Author): 何丽娟,马文清,孙尚志,王淑旭,吴夏梦

DOI: 10.3969/j.issn.1003-9015.2020.03.006

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