Phase Diagram of the Nicotinic Acid + Ammonium Sulfate + Water System


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The solid–liquid equilibria (SLE) in the ternary nicotinic acid + ammonium sulfate + water system were experimentally studied at T = 298.15, 323.15, and 348.15 K under atmospheric pressure by an isothermal equilibrium method. Three isothermal phase diagrams of the system were established based on the measured mutual solubility data. Meanwhile, the physicochemical properties (density and conductivity) of this system were measured. The phase diagram contained three crystallization regions, two crystallization curves, and one co-saturation point at each temperature. The crystallization field of both nicotinic acid and ammonium sulfate enlarged with increase of temperature. The crystallization region of ammonium sulfate was smaller than that of nicotinic acid at each temperature.

作者简介

Yanfei Wang

Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science,
Tianjin University of Science and Technology

Email: xyz@tust.edu.cn
中国, Tianjin, 300457

Jiaqi Hu

Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science,
Tianjin University of Science and Technology

Email: xyz@tust.edu.cn
中国, Tianjin, 300457

Xiaoyu Zhao

Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science,
Tianjin University of Science and Technology

编辑信件的主要联系方式.
Email: xyz@tust.edu.cn
中国, Tianjin, 300457

Xiaoyu Liu

Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science,
Tianjin University of Science and Technology

Email: xyz@tust.edu.cn
中国, Tianjin, 300457

Zhao Chen

Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science,
Tianjin University of Science and Technology

Email: xyz@tust.edu.cn
中国, Tianjin, 300457

Zongjing Liu

Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science,
Tianjin University of Science and Technology

Email: xyz@tust.edu.cn
中国, Tianjin, 300457

Libin Yang

Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science,
Tianjin University of Science and Technology

Email: xyz@tust.edu.cn
中国, Tianjin, 300457

Liang Zhu

Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science,
Tianjin University of Science and Technology

Email: xyz@tust.edu.cn
中国, Tianjin, 300457

Zuoliang Sha

Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science,
Tianjin University of Science and Technology

Email: xyz@tust.edu.cn
中国, Tianjin, 300457

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