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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
关键词(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
刊名SOLAR ENERGY MATERIALS AND SOLAR CELLS
2011-10-01
DOI10.1016/j.solmat.2011.06.014
95期:10页:2897-2906
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Technology ; Physical Sciences
类目[WOS]Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied
研究领域[WOS]Energy & Fuels ; Materials Science ; Physics
关键词[WOS]THERMAL-ENERGY STORAGE ; HEAT-CAPACITY ; TRANSITIONS
英文摘要Crystalline 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.
语种英语
WOS记录号WOS:000293936300027
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/142329
专题中国科学院大连化学物理研究所
作者单位1.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
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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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