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题名: Low-temperature heat capacities, and thermodynamic properties of solid-solid phase change material bis(1-octylammonium) tetrachlorocuprate
作者: Lu, D. F.1;  Di, You-Ying1;  Tan, Z. C.2;  Dou, J. M.1
关键词: Phase change material ;  Adiabatic calorimetry ;  Low-temperature heat capacities ;  Solid-solid phase transition ;  Thermodynamic function
刊名: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
发表日期: 2013
DOI: 10.1007/s10973-012-2238-1
卷: 111, 期:1, 页:213-218
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical ;  Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: A new crystalline complex (C8H17NH3)(2)CuCl4(s) (abbreviated as C8Cu(s)) was synthesized by liquid phase reaction. Chemical analysis, elemental analysis, and X-ray crystallography were applied to characterize the composition and crystal structure of the complex. Low-temperature heat capacities of the complex were measured by a precision automatic adiabatic calorimeter over the temperatures ranging from 78 to 395 K, and two solid-solid phase changes appeared in the heat capacity curve. The temperatures, molar enthalpies and entropies of the two phase transitions of the complex were determined to be: T (trs, 1) = 309.4 +/- A 0.35 K, Delta(trs) H (m, 1) = 16.55 +/- A 0.41 kJ mol(-1), and Delta(trs) S (m, 1) = 53.49 +/- A 1.3 J K-1 mol(-1) for the first peak; T (trs, 2) = 338.5 +/- A 0.63 K, Delta(trs) H (m, 2) = 6.500 +/- A 0.10 kJ mol(-1), and Delta(trs) S (m, 2) = 19.20 +/- A 0.28 J K-1 mol(-1) for the second peak. Two polynomial equations of the heat capacities as a function of the temperature were fitted by least-square method. Smoothed heat capacities and thermodynamic functions of the complex relative to the standard reference temperature of 298.15 K were calculated based on the fitted polynomial equations.
关键词[WOS]: TETRACHLOROZINCATE ;  TRANSITIONS ;  STORAGE
语种: 英语
WOS记录号: WOS:000313207400027
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137551
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Liaocheng Univ, Shandong Prov Key Lab Chem Energy Storage & Novel, Coll Chem & Chem Engn, Liaocheng 252059, Shandong, Peoples R China
2.Chinese Acad Sci, Energy Storage & Thermochem Lab, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Lu, D. F.,Di, You-Ying,Tan, Z. C.,et al. Low-temperature heat capacities, and thermodynamic properties of solid-solid phase change material bis(1-octylammonium) tetrachlorocuprate[J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,2013,111(1):213-218.
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