25～100°C下ZnO在NaOH溶液中溶解度测定（英文）

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Bibliographic Details
Published in中国有色金属学报：英文版 Vol. 22; no. 6; pp. 1513 - 1516
Main Author 陈爱良 徐冬 陈星宇 张文勇 刘旭恒
Format Journal Article
LanguageEnglish
Published 2012
Subjects
NaOH溶液,Na2O-ZnO-H2O体系
ZnO溶解度
平衡相图
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ISSN1003-6326

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Bibliography:43-1239/TG
CHEN Ai-liang, XU Dong, CHEN Xing-yu, ZHANG Wen-yong, LIU Xu-heng School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China
ZnO solubility; sodium hydroxide solution; Na2O-ZnO-H2O system; equilibrium phase diagram
The solubility of zinc oxide in sodium hydroxide solution was measured in a closed polytetrafluoroethylene vessel from 25 to 100 ℃. The ZnO solubility was determined by employing the method of isothermal solution saturation. The results show that only ZnO solid exists in the equilibrium state in the low concentration alkali regions, and the solubility of zinc oxide is almost invariable with temperature. With the increase of alkali concentration, equilibrium solid turns from ZnO to NaZn（OH）3 suddenly, this mutation is called invariant point. The alkali concentration of the invariant points increases with increasing temperature, but the solubility of NaZn（OH）3 decreases with increasing alkali concentration at the same temperature. At the same Na2O concentration, the higher the temperature is, the higher the solubility of NaZn（OH）3 is.
ISSN:1003-6326