水的多相行为 + 1-butanol + 深层欧特克溶剂系统在101.3kPa时
Isadora Pires Gomes1, Nicolas Pinheiro Dos Santos1, Pedro Bernardes Noronha1
1Department of Chemical Engineering, Lorena School of Engineering (EEL/USP), University of São Paulo, Lorena 12602-810, SP, Brazil.
Molecules (Basel, Switzerland)
|October 26, 2024
概括
这项研究研究了深度环氧溶剂 (DES) 作为混合物分离的可持续替代品. 该研究模拟了水,1-butanol 和胆化物 + 糖 DES 的热力学行为,显示了其在工业分离过程中的潜力.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 热力学是一种热力学.
- 绿色化学 绿色化学
背景情况:
- 化学工业寻求可持续的分离和净化工艺,推动人们对新型溶剂替代品的兴趣.
- 与传统的溶剂,如离子液 (IL) 相比,深深的溶解剂 (DES) 提供了一种环保,成本效益和毒性较低的选择.
- 了解DES在分离过程中的热力学行为对于其工业应用至关重要.
研究的目的:
- 为了研究水+1-butanol+DES系统的液体-液体平衡 (LLE) 和蒸汽-液体平衡 (VLE).
- 用既定方法评估热力学一致性和建模相位行为.
- 评估DES作为提取剂的潜力,并将其与ILs进行比较.
主要方法:
- 在298.15 K和101.3 kPa.LLE的实验性确定.
- 在364.05K至373.85K的温度范围内,在101.3kPa的VLE的实验性确定.
- 热力学一致性测试 (马西拉等人) 和威斯尼亚克的方法).
- 使用LLE的gamma-gamma方法和VLE的gamma-phi方法与NRTL模型进行建模.
主要成果:
- 实验LLE和VLE数据得到并验证了热力学一致性.
- 非随机双液体 (NRTL) 模型有效地关联了研究系统的相位行为.
- 分离和分布系数表明了DES的开采潜力.
- 相对挥发率计算评估了亚热的存在,这对于蒸设计至关重要.
结论:
- 研究的DES (胆化物+甘油) 使用NRTL模型证明了高效的相位行为相关性.
- 在分离和净化过程中,DES显示为ILs的有效和可持续替代品.
- 这项研究为设计和优化利用DES的工业分离工艺提供了基础.
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