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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
Source PublicationACTA PHYSICO-CHIMICA SINICA
ISSN1000-6818
Volume32Issue:5Pages:1134-1142
AbstractThe 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.
KeywordNh4vo3 Solubility Nh4h2po4 Solution (Nh4)(3)Po4 Solution
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.3866/PKU.WHXB201602194
Indexed BySCI
Language英语
WOS KeywordLITHIUM-ION BATTERIES ; SOLVENT-EXTRACTION ; 323 K ; ELECTROCHEMICAL PERFORMANCE ; TRANSPORT-PROPERTIES ; HIGH-PRESSURES ; PHASE-DIAGRAM ; H2O SYSTEM ; VANADIUM ; CATHODE
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
Funding OrganizationTechnology Support Program of China(2015BAB02B05) ; National Basic Research Program of China (973)(2013CB632605) ; National Natural Science Foundation of China(51425405)
WOS IDWOS:000376834100008
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20951
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.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
Recommended Citation
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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