High-temperature thermodynamics of ZnO–NH4Cl–H2O system

High-temperature thermodynamics of ZnO–NH4Cl–H2O system

On the basis of the principles of simultaneous equilibrium, conservation of mass, and aqueous electronic charge neutrality and the correspondence principle of ion entropy, the high-temperature thermodynamics of the ZnO–NH4Cl–H2O system was studied to predict solubility and construct Zn species distr...

Full description

Bibliographic Details
Main Authors: Duoqiang Zhao, Shenghai Yang, Yongming Chen, Yafei Jie, Jing He, Chaobo Tang
Format: Article
Language:English
Published: Elsevier 2020-11-01
Series:Journal of Materials Research and Technology
Subjects:
Zinc hydrometallurgy
Ammonium chloride
High-temperature thermodynamics
Ion entropy
Online Access:http://www.sciencedirect.com/science/article/pii/S2238785420320329
id doaj-4234f523dd9048a587ff105fa41bc60b
record_format Article
spelling doaj-4234f523dd9048a587ff105fa41bc60b2021-01-02T05:12:32ZengElsevierJournal of Materials Research and Technology2238-78542020-11-01961606416071High-temperature thermodynamics of ZnO–NH4Cl–H2O systemDuoqiang Zhao0Shenghai Yang1Yongming Chen2Yafei Jie3Jing He4Chaobo Tang5School of Metallurgy and Environment, Central South University, National Engineering Laboratory for High Efficiency Recovery of Refractory Nonferrous Metals, Changsha, 410083, ChinaSchool of Metallurgy and Environment, Central South University, National Engineering Laboratory for High Efficiency Recovery of Refractory Nonferrous Metals, Changsha, 410083, ChinaCorresponding author.; School of Metallurgy and Environment, Central South University, National Engineering Laboratory for High Efficiency Recovery of Refractory Nonferrous Metals, Changsha, 410083, ChinaSchool of Metallurgy and Environment, Central South University, National Engineering Laboratory for High Efficiency Recovery of Refractory Nonferrous Metals, Changsha, 410083, ChinaSchool of Metallurgy and Environment, Central South University, National Engineering Laboratory for High Efficiency Recovery of Refractory Nonferrous Metals, Changsha, 410083, ChinaSchool of Metallurgy and Environment, Central South University, National Engineering Laboratory for High Efficiency Recovery of Refractory Nonferrous Metals, Changsha, 410083, ChinaOn the basis of the principles of simultaneous equilibrium, conservation of mass, and aqueous electronic charge neutrality and the correspondence principle of ion entropy, the high-temperature thermodynamics of the ZnO–NH4Cl–H2O system was studied to predict solubility and construct Zn species distribution. The model was constructed precisely by using the MATLAB program. The total Zn2+ concentration in the solution was affected significantly by temperature and total ammonium concentration. ZnNH3Cl3− was the predominant species in the ZnO–NH4Cl–H2O system. The solubility of zinc diammine chloride in NH4Cl solution (>2 mol·L−1) in the temperature range of 303–353 K was determined using equilibrium experiments, which had results that agreed well with the theoretical value. The data and high-temperature thermodynamic model used in this paper are reliable.http://www.sciencedirect.com/science/article/pii/S2238785420320329Zinc hydrometallurgyAmmonium chlorideHigh-temperature thermodynamicsIon entropy
collection DOAJ
language English
format Article
sources DOAJ
author Duoqiang Zhao
Shenghai Yang
Yongming Chen
Yafei Jie
Jing He
Chaobo Tang
spellingShingle Duoqiang Zhao
Shenghai Yang
Yongming Chen
Yafei Jie
Jing He
Chaobo Tang
High-temperature thermodynamics of ZnO–NH4Cl–H2O system
Journal of Materials Research and Technology
Zinc hydrometallurgy
Ammonium chloride
High-temperature thermodynamics
Ion entropy
author_facet Duoqiang Zhao
Shenghai Yang
Yongming Chen
Yafei Jie
Jing He
Chaobo Tang
author_sort Duoqiang Zhao
title High-temperature thermodynamics of ZnO–NH4Cl–H2O system
title_short High-temperature thermodynamics of ZnO–NH4Cl–H2O system
title_full High-temperature thermodynamics of ZnO–NH4Cl–H2O system
title_fullStr High-temperature thermodynamics of ZnO–NH4Cl–H2O system
title_full_unstemmed High-temperature thermodynamics of ZnO–NH4Cl–H2O system
title_sort high-temperature thermodynamics of zno–nh4cl–h2o system
publisher Elsevier
series Journal of Materials Research and Technology
issn 2238-7854
publishDate 2020-11-01
description On the basis of the principles of simultaneous equilibrium, conservation of mass, and aqueous electronic charge neutrality and the correspondence principle of ion entropy, the high-temperature thermodynamics of the ZnO–NH4Cl–H2O system was studied to predict solubility and construct Zn species distribution. The model was constructed precisely by using the MATLAB program. The total Zn2+ concentration in the solution was affected significantly by temperature and total ammonium concentration. ZnNH3Cl3− was the predominant species in the ZnO–NH4Cl–H2O system. The solubility of zinc diammine chloride in NH4Cl solution (>2 mol·L−1) in the temperature range of 303–353 K was determined using equilibrium experiments, which had results that agreed well with the theoretical value. The data and high-temperature thermodynamic model used in this paper are reliable.
topic Zinc hydrometallurgy
Ammonium chloride
High-temperature thermodynamics
Ion entropy
url http://www.sciencedirect.com/science/article/pii/S2238785420320329
work_keys_str_mv AT duoqiangzhao hightemperaturethermodynamicsofznonh4clh2osystem
AT shenghaiyang hightemperaturethermodynamicsofznonh4clh2osystem
AT yongmingchen hightemperaturethermodynamicsofznonh4clh2osystem
AT yafeijie hightemperaturethermodynamicsofznonh4clh2osystem
AT jinghe hightemperaturethermodynamicsofznonh4clh2osystem
AT chaobotang hightemperaturethermodynamicsofznonh4clh2osystem
_version_ 1724359199017664512

Similar Items