Heat capacity of Rb2SO4(aq) and Cs2SO4(aq) solutions and thermodynamic modelling of (Rb2SO4 + H2O) and (Cs2SO4 + H2O) systems
文献类型：期刊论文
| 作者 | Fan, Yanfei; Li, Dongdong ; Gao, Dandan; Zeng, Dewen; Li, Wu
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| 刊名 | JOURNAL OF CHEMICAL THERMODYNAMICS
 |
| 出版日期 | 2020-01 |
| 卷号 | 142页码:106001 |
| ISSN号 | 0021-9614 |
| DOI | 10.1016/j.jct.2019.106001 |
| 英文摘要 | Specific heat capacity of Rb2SO4(aq) and Cs2SO4(aq) solutions was determined using a Calvet-type calorimeter from 288.15 K to 338.15 K and from about 0.25 mol.kg(-1) to concentration near room temperature solubility limits. For both Rb2SO4(aq) and Cs2SO4(aq) solutions, the specific heat capacity decreases with the increase of molality at constant temperature. Combining the heat capacity data determined in this study and other thermodynamic properties (i.e. water activity, osmotic coefficient, mean ionic activity coefficient, enthalpy of dilution and solubility) reported in literature, thermodynamic and phase equilibria properties of the binary Rb2SO4 + H2O and Cs2SO4 + H2O systems were modelled using a comprehensive thermodynamic framework, in which a Pitzer-Simonson-Clegg model was applied to represent the non-ideality of aqueous phases. The models can represent all the properties over wide temperature and concentration ranges. This study forms a basis for solubility prediction in multi-component systems containing Rb and Cs sulfates. (C) 2019 Elsevier Ltd. |
| 源URL | [http://ir.isl.ac.cn/handle/363002/33871]  |
| 专题 | 中国科学院青海盐湖研究所 青海盐湖研究所_盐湖资源与化学实验室 |
| 推荐引用方式 GB/T 7714 | Fan, Yanfei,Li, Dongdong,Gao, Dandan,et al. Heat capacity of Rb2SO4(aq) and Cs2SO4(aq) solutions and thermodynamic modelling of (Rb2SO4 + H2O) and (Cs2SO4 + H2O) systems[J]. JOURNAL OF CHEMICAL THERMODYNAMICS,2020,142:106001. |
| APA | Fan, Yanfei,Li, Dongdong,Gao, Dandan,Zeng, Dewen,&Li, Wu.(2020).Heat capacity of Rb2SO4(aq) and Cs2SO4(aq) solutions and thermodynamic modelling of (Rb2SO4 + H2O) and (Cs2SO4 + H2O) systems.JOURNAL OF CHEMICAL THERMODYNAMICS,142,106001. |
| MLA | Fan, Yanfei,et al."Heat capacity of Rb2SO4(aq) and Cs2SO4(aq) solutions and thermodynamic modelling of (Rb2SO4 + H2O) and (Cs2SO4 + H2O) systems".JOURNAL OF CHEMICAL THERMODYNAMICS 142(2020):106001. |
入库方式： OAI收割
来源：青海盐湖研究所
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