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Crystal structures and thermochemistry on phase change materials (n-CnH2n+1NH3)(2)CuCl4(s) (n=14 and 15)
He, Dong-Hua1; Di, You-Ying1; Tan, Zhi-Cheng2; Yi, Fang-Fang1; Dan, Wen-Yan1; Liu, Yu-Pu1
Keyword(n-cnh2n+1nh3)(2)Cucl4 (N=14 And 15) X-ray Crystallography Phase Change Materials Adiabatic Calorimetry Low-temperature Heat Capacity Solid-solid Phase Transition
Source PublicationSOLAR ENERGY MATERIALS AND SOLAR CELLS
2011-10-01
DOI10.1016/j.solmat.2011.06.014
Volume95Issue:10Pages:2897-2906
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
WOS SubjectEnergy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied
WOS Research AreaEnergy & Fuels ; Materials Science ; Physics
WOS KeywordTHERMAL-ENERGY STORAGE ; HEAT-CAPACITY ; TRANSITIONS
AbstractCrystalline compounds (C14H29NH3)(2)CuCl4(s) and (C15H31NH3)(2)CuCl4(s) were synthesized. X-ray crystallography was applied to characterize crystal structures of the two compounds. The crystal system is both monoclinic, the space group is both C2/c, and Z=4. The lattice potential energies of the title compounds were calculated to be U-POT [(C14H29NH3)(2)CuCl4, s]=853.12 kJ/mol and U-POT [(C15H31NH3)(2)CUCl4, s]=854.93 kJ/mol. Low-temperature heat capacities of the two compounds were measured by a precision automatic adiabatic calorimeter over the temperature range from 78 to 395 K. The temperatures, molar enthalpies, and entropies of two phase transitions for each of the two complexes were determined to be: for (C14H29NH3)(2)CuCl4(s), 342.35 +/- 0.11 K, 76.17 +/- 0.40 kJ/mol, and 222.49 +/- 1.20 J/K mol for the first peak; 352.61 +/- 0.09 K, 27.83 +/- 0.27 kJ/mol, and 78.92 +/- 0.78 J/K mol for the second peak, and for (C15H31NH3)(2)CuCl4(s), they were 345.40 +/- 0.93 K, 62.06 +/- 1.07 kJ/mol, and 179.67 +/- 2.63 J/K mol for the first peak; 360.98 +/- 0.25 K, 21.66 +/- 0.76 kJ/mol, and 60.00 +/- 2.09 J/K mol for the second peak, respectively. The smoothed heat capacities and thermodynamic functions (H-T(o)-H-298.15(o)) and (Delta S-trs(m)=Delta H-trs(m)/T-trs) of the two compounds were calculated with an interval of 5 K based on the experimental heat capacities. (C) 2011 Elsevier B.V. All rights reserved.
Language英语
WOS IDWOS:000293936300027
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/142329
Collection中国科学院大连化学物理研究所
Affiliation1.Liaocheng Univ, Coll Chem & Chem Engn, Shandong Prov Key Lab Chem Energy Storage & Novel, Liaocheng 252059, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, China Ion Liquid Lab & Thermochem Lab, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
He, Dong-Hua,Di, You-Ying,Tan, Zhi-Cheng,et al. Crystal structures and thermochemistry on phase change materials (n-CnH2n+1NH3)(2)CuCl4(s) (n=14 and 15)[J]. SOLAR ENERGY MATERIALS AND SOLAR CELLS,2011,95(10):2897-2906.
APA He, Dong-Hua,Di, You-Ying,Tan, Zhi-Cheng,Yi, Fang-Fang,Dan, Wen-Yan,&Liu, Yu-Pu.(2011).Crystal structures and thermochemistry on phase change materials (n-CnH2n+1NH3)(2)CuCl4(s) (n=14 and 15).SOLAR ENERGY MATERIALS AND SOLAR CELLS,95(10),2897-2906.
MLA He, Dong-Hua,et al."Crystal structures and thermochemistry on phase change materials (n-CnH2n+1NH3)(2)CuCl4(s) (n=14 and 15)".SOLAR ENERGY MATERIALS AND SOLAR CELLS 95.10(2011):2897-2906.
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