Solubility of NH4VO3 in NH4H2PO4-H2O and (NH4)(3)PO4-H2O Systems

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	Solubility of NH4VO3 in NH4H2PO4-H2O and (NH4)(3)PO4-H2O Systems
	Gong Xu-Li 1,2; Zhang Chang-Qiao 1; Ning Peng-Ge 2; Cao Hong-Bin 2; Zhang Yi 2
刊名	ACTA PHYSICO-CHIMICA SINICA
	2016-05-15
卷号	32 期号:5 页码:1134-1142
关键词	NH4VO3 Solubility NH4H2PO4 solution (NH4)(3)PO4 solution
ISSN号	1000-6818
英文摘要	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.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical
研究领域[WOS]	Chemistry
关键词[WOS]	LITHIUM-ION BATTERIES ; SOLVENT-EXTRACTION ; 323 K ; ELECTROCHEMICAL PERFORMANCE ; TRANSPORT-PROPERTIES ; HIGH-PRESSURES ; PHASE-DIAGRAM ; H2O SYSTEM ; VANADIUM ; CATHODE
收录类别	SCI
语种	英语
WOS记录号	WOS:000376834100008
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/20951]
专题	过程工程研究所_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
推荐引用方式 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.