Enthalpies of Solution for VOSO(4)center dot 2.76H(2)O(s) in Water and in Aqueous H(2)SO(4)
文献类型：期刊论文
| 作者 | J. G. Liu ; Y. Qin ; C. W. Yan |
| 刊名 | Acta Chimica Sinica
 |
| 出版日期 | 2010 |
| 卷号 | 68期号:7页码:722-726 |
| 关键词 | vanadium redox flow battery enthalpy of solution vanadyl sulfate sulfuric acid vanadyl sulfate sulfuric-acid redox v(iv)/v(v) battery cell |
| ISSN号 | 0567-7351 |
| 中文摘要 | The molal enthalpies of solution of VOSO(4)center dot 2.76H(2)O(s) with various molalities in water and in aqueous sulfuric acid (0.5 mol.kg(-1)) Delta(s)H(m), were measured by a solution-reaction isoperibol calorimeter at 298.15 K. The value of -Delta(s)H(m) in aqueous sulfuric acid was lower than that in water, which shows that energy state of VOSO(4) in aqueous H(2)SO(4) was higher than that in pure water. An improved Archer's method was put forward in terms of ionic association equilibrium of VOSO(4) and second dissociation equilibrium of H(2)SO(4). Using the improved method, the standard molal enthalpies of solution Delta(s)H(m)(circle minus) = 29.18 kJ.mol(-1) in pure water and Delta(s)H(m)(circle minus) = -25.79 kJ.mol(-1) in aqueous sulfuric acid were obtained, respectively. According to calculation, the molality of VO(2+) was larger in VOSO(4)-H(2)SO(4) mixed solution than that in water. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/31294]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | J. G. Liu,Y. Qin,C. W. Yan. Enthalpies of Solution for VOSO(4)center dot 2.76H(2)O(s) in Water and in Aqueous H(2)SO(4)[J]. Acta Chimica Sinica,2010,68(7):722-726. |
| APA | J. G. Liu,Y. Qin,&C. W. Yan.(2010).Enthalpies of Solution for VOSO(4)center dot 2.76H(2)O(s) in Water and in Aqueous H(2)SO(4).Acta Chimica Sinica,68(7),722-726. |
| MLA | J. G. Liu,et al."Enthalpies of Solution for VOSO(4)center dot 2.76H(2)O(s) in Water and in Aqueous H(2)SO(4)".Acta Chimica Sinica 68.7(2010):722-726. |
入库方式： OAI收割
来源：金属研究所
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