Acetonitrile Dehydration via Extractive Distillation Using Low Transition Temperature Mixtures as Entrainers,Journal of Chemical & Engineering Data

当前位置： X-MOL 学术 › J. Chem. Eng. Data › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Acetonitrile Dehydration via Extractive Distillation Using Low Transition Temperature Mixtures as Entrainers
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2018-07-09 , DOI: 10.1021/acs.jced.8b00228
Bandhana Sharma ₁ , Neetu Singh ₁ , Tarun Jain ₁ , Jai Prakash Kushwaha ₁ , Parminder Singh ₁

Affiliation

Low transition temperature mixtures (LTTMs) are versatile alternatives to ILs. They share many properties with ILs, so they become a suitable choice for entrainers in extractive distillation processes. In this study, glycolic acid and choline chloride in a 3:1 molar ratio (GC3:1) were synthesized and explored as entrainers for separation of acetonitrile + water azeotropic mixtures. Isobaric vapor–liquid equilibrium data for the pseudobinary mixtures of ACN + GC3:1 and water + GC3:1 were measured at atmospheric pressure (101.32 kPa). For the pseudoternary system ACN + water + GC3:1, also VLE data were measured at different GC3:1 mole fractions of 0.05, 0.1, and 0.15. The thermodynamic modeling of these systems was performed using the nonrandom two-liquid (NRTL) model. Furthermore, a study was conducted for synthesized GC3:1 recoverability. A good agreement were found between experimental data and predicted values for these systems. Results showed that LTTM (GC3:1) eliminated the acetonitrile + water azeotrope by manipulating the relative volatility of the acetonitrile + water mixture. Therefore, LTTM (GC3:1) can be concluded as an efficient entrainer for the separation of an acetonitrile + water azeotropic mixture by extractive distillation.

中文翻译：

通过使用低转变温度混合物作为夹带剂的萃取蒸馏进行乙腈脱水

低转变温度混合物（LTTM）是IL的通用替代品。它们与IL共有许多特性，因此它们成为萃取蒸馏过程中夹带剂的合适选择。在这项研究中，合成了摩尔比为3：1（GC3：1）的乙醇酸和氯化胆碱，并将其作为夹带剂用于分离乙腈+水共沸混合物。在大气压力（101.32 kPa）下测量了ACN + GC3：1与水+ GC3：1的假二元混合物的等压气液平衡数据。对于伪三元体系ACN +水+ GC3：1，还在0.05、0.1和0.15的不同GC3：1摩尔分数下测量了VLE数据。这些系统的热力学模型是使用非随机两液（NRTL）模型进行的。此外，对合成的GC3：1的可回收性进行了研究。在这些系统的实验数据和预测值之间找到了很好的一致性。结果表明，LTTM（GC3：1）通过控制乙腈+水混合物的相对挥发性消除了乙腈+水共沸物。因此，可以认为LTTM（GC3：1）是通过萃取蒸馏分离乙腈+水共沸混合物的有效夹带剂。

更新日期：2018-07-09

点击分享查看原文

点击收藏

阅读更多本刊最新论文