Solubility of NH4VO3 in NH4H2PO4-H2O and (NH4)(3)PO4-H2O Systems
Gong Xu-Li1,2; Zhang Chang-Qiao1; Ning Peng-Ge2; Cao Hong-Bin2; Zhang Yi2
2016-05-15
发表期刊ACTA PHYSICO-CHIMICA SINICA
ISSN1000-6818
卷号32期号:5页码:1134-1142
摘要The solubility of ammonium metavanadate (NH4VO3) in NH4H2PO4-H2O and (NH4)(3)PO4-H2O systems at T = 298.15-328.15 K was measured using the classic isothermal dissolution method. The densities and pH values of the solutions were also determined. The solubility of NH4VO3 decreased at first and then increased with increasing NH4H2PO4 or (NH4)(3)PO4 concentrations. This was considered to be caused by the common ionic effect, chemical reaction equilibrium and ionic activity. At T= 298.15 K, the solubility of NH4VO3 in the NH4H2PO4-H2O system was the highest, and was lower in the (NH4)(3)PO4-H2O system. The solubility in the (NH4)(2)HPO4-H2O system was the lowest. The mean ionic activity coefficients were calculated for the three phosphate solutions at C = 0.5 mol . kg(-1) using the pH values and dissolution reaction constant. The mean ionic activity coefficients were the largest for the (NH4)(2)HPO4-H2O system, and were smaller for the (NH4)(3)PO4-H2O system. The mean ionic activity coefficients were the smallest for the NH4H2PO4-H2O system, which agrees with the solubility variations of NH4VO3 in the three phosphate systems.
关键词Nh4vo3 Solubility Nh4h2po4 Solution (Nh4)(3)Po4 Solution
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.3866/PKU.WHXB201602194
收录类别SCI
语种英语
关键词[WOS]LITHIUM-ION BATTERIES ; SOLVENT-EXTRACTION ; 323 K ; ELECTROCHEMICAL PERFORMANCE ; TRANSPORT-PROPERTIES ; HIGH-PRESSURES ; PHASE-DIAGRAM ; H2O SYSTEM ; VANADIUM ; CATHODE
WOS研究方向Chemistry
WOS类目Chemistry, Physical
项目资助者Technology Support Program of China(2015BAB02B05) ; National Basic Research Program of China (973)(2013CB632605) ; National Natural Science Foundation of China(51425405)
WOS记录号WOS:000376834100008
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/20951
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
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GB/T 7714
Gong Xu-Li,Zhang Chang-Qiao,Ning Peng-Ge,et al. Solubility of NH4VO3 in NH4H2PO4-H2O and (NH4)(3)PO4-H2O Systems[J]. ACTA PHYSICO-CHIMICA SINICA,2016,32(5):1134-1142.
APA Gong Xu-Li,Zhang Chang-Qiao,Ning Peng-Ge,Cao Hong-Bin,&Zhang Yi.(2016).Solubility of NH4VO3 in NH4H2PO4-H2O and (NH4)(3)PO4-H2O Systems.ACTA PHYSICO-CHIMICA SINICA,32(5),1134-1142.
MLA Gong Xu-Li,et al."Solubility of NH4VO3 in NH4H2PO4-H2O and (NH4)(3)PO4-H2O Systems".ACTA PHYSICO-CHIMICA SINICA 32.5(2016):1134-1142.
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