The Effect of Dissolved Gases as Impurities on Crystallization

被引：14

作者：

Huang, Jiting ^{[1
,2
]}

Yin, Qiuxiang ^{[2
]}

Ulrich, Joachim ^{[1
]}

机构：

[1] Univ Halle Wittenberg, Ctr Engn Sci, Thermal Proc Engn, D-06099 Halle, Saale, Germany

[2] Tianjin Univ, Sch Chem Engn & Technol, State Key Lab Chem Engn, Tianjin, Peoples R China

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2016年 / 39卷 / 07期

关键词：

Dissolved gases; Impurities; Kinetics; Thermodynamics; CRYSTAL-GROWTH; PH-VALUE; KINETICS; SUPERSATURATION; NUCLEATION; CHLORIDE;

D O I：

10.1002/ceat.201500674

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Gases dissolved in solvents are usually low in amount but introduce many impurities to certain systems, thus creating disadvantages or advantages which have so far been seldom reported. Evidence of the effects of dissolved gases as impurities on crystallization is provided here. Four types of gases were used. By bubbling these gases into a solvent, gas-saturated solutions were prepared, whereas the degassed solvent was used as a comparison. The results show that different types of gases (including the degassed solvent) do change the thermodynamic and kinetic aspects to a different degree. The pH values of the epsomite solutions that were saturated with different types of gases turned out to be different compared to the untreated solutions, indicating that the gas-liquid-solid equilibrium varied.

引用

页码：1213 / 1218

页数：6

共 24 条

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