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Densities and Apparent Molar Volumes of Aqueous Solutions of Li2SO4 and LiCF3SO3 at Temperatures from 293 to 343 K
Hu, Bin1; Hnedkovsky, Lubomir2; Hefter, Glenn2
2016-10-01
发表期刊JOURNAL OF CHEMICAL AND ENGINEERING DATA
卷号61期号:10页码:3618-3626
文章类型Article
摘要Densities of aqueous solutions of lithium sulfate (Li2SO4) and lithium trifluoromethanesulfonate (LiCF3SO3) at solute molalities ranging from 0.05 to 2.7 or 9.6 mol.kg(-1), respectively, have been measured by vibrating-tube densimetry over the temperature range 293.15 <= T/K <= 343.15 at 0.1 MPa pressure. The apparent molar volumes (V-phi) of Li2SO4(aq) and LiCF3SO3(aq) derived from these data were fitted using an extended Redlich-Rosenfeld-Meyer equation. The V-phi values for the two systems exhibit quite different dependences on concentration and temperature, as do the isobaric expansibilities. A combination of the present and literature data reveals that the densities for Li2SO4(aq) given in o standard compilations are unreliable at low concentrations. Comparison of the present results with literature data for related salts shows that V-phi(LinX) and V-phi(NanX) exhibit a crossover at approximate to 0.5 mol.kg(-1) for both systems, similar to those observed previously for other lithium and sodium salts. Consideration of an appropriate series of lithium salts suggests that anion size influences departures from the Debye-Huckel limiting law for volumes, whereas for a series of sulfate salts cation size does not appear to be a major factor.
WOS标题词Science & Technology ; Physical Sciences ; Technology
关键词[WOS]TRIFLUOROMETHANESULFONIC ACID ; THERMODYNAMIC PROPERTIES ; DIELECTRIC-SPECTROSCOPY ; NONAQUEOUS SOLVENTS ; ION ASSOCIATION ; WATER SOLUTIONS ; 40 MPA ; LITHIUM ; PRESSURES ; SULFATE
收录类别SCI
语种英语
WOS研究方向Thermodynamics ; Chemistry ; Engineering
WOS类目Thermodynamics ; Chemistry, Multidisciplinary ; Engineering, Chemical
WOS记录号WOS:000385606900029
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文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/6355
专题青海盐湖研究所知识仓储
盐湖资源与化学实验室
作者单位1.Chinese Acad Sci, Qinghai Inst Salt Lakes, CAS Key Lab Salt Lake Resources & Chem, Xining 810008, Peoples R China
2.Murdoch Univ, Dept Chem, Murdoch, WA 6150, Australia
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Hu, Bin,Hnedkovsky, Lubomir,Hefter, Glenn. Densities and Apparent Molar Volumes of Aqueous Solutions of Li2SO4 and LiCF3SO3 at Temperatures from 293 to 343 K[J]. JOURNAL OF CHEMICAL AND ENGINEERING DATA,2016,61(10):3618-3626.
APA Hu, Bin,Hnedkovsky, Lubomir,&Hefter, Glenn.(2016).Densities and Apparent Molar Volumes of Aqueous Solutions of Li2SO4 and LiCF3SO3 at Temperatures from 293 to 343 K.JOURNAL OF CHEMICAL AND ENGINEERING DATA,61(10),3618-3626.
MLA Hu, Bin,et al."Densities and Apparent Molar Volumes of Aqueous Solutions of Li2SO4 and LiCF3SO3 at Temperatures from 293 to 343 K".JOURNAL OF CHEMICAL AND ENGINEERING DATA 61.10(2016):3618-3626.
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