对N-甲基形式胺和N,N-二甲基形式胺的热力学研究
Květoslav Růžička1, Vojtěch Štejfa1, Ctirad Červinka1
1Department of Physical Chemistry, University of Chemistry and Technology, Prague, Technická 5, CZ-166 28 Prague, Czech Republic.
Molecules (Basel, Switzerland)
|March 13, 2024
概括
本研究对N-甲基形式胺和N,N-二甲基形式胺进行了全面的热力学分析. 新的实验数据和理论计算确保了对这些甲胺的热力学性质的准确预测.
科学领域:
- 化学热力学化学热力学
- 有机化合物的物理化学 有机化合物的物理化学
背景情况:
- N-甲基形式胺和N,N-二甲基形式胺是重要的工业溶剂.
- 准确的热力学数据对于工艺设计和安全至关重要.
研究的目的:
- 对N-甲基形式胺和N,N-二甲基形式胺进行广泛的热力学研究.
- 用实验和理论方法开发一个一致的热力学描述.
- 为提供可靠的N-methylformamide蒸汽压力方程.
主要方法:
- 使用天卡尔维特热量计测试液体热容量的实验测量.
- 使用静态方法对蒸汽压力的实验测量.
- 通过密度函数理论 (DFT) 和统计热力学计算理想气体的热力学特性.
- 同时对实验和文献数据进行相关联,以获得热力学一致性.
主要成果:
- 对N-甲基形式胺的测量液体热容量在250-300K之间.
- 两种化合物的测量蒸汽压力在238-308K之间.
- 计算了理想气体的热力学特性.
- 开发了一个一致的热力学描述和一个有效的蒸汽压力方程为N-methylformamide.
结论:
- 这项研究为N-methylformamide和N,N-dimethylformamide提供了一致可靠的热力学数据集.
- 开发的蒸汽压力方程从三重点到正常沸点是有效的.
- 综合方法确保了热力学属性的高精度和可靠性.
相关概念视频
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Temporary attractive forces like dispersion are present in all molecules, whether they are polar or nonpolar. They...
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The IUPAC and common names of amides are derived from the parent carboxylic acid, by replacing the suffix “oic acid” and “ic acid,” respectively, with “amide.” In the following example, the IUPAC name ethanamide is derived from ethanoic acid, and the common name, acetamide, is obtained from acetic acid.
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