Crystal structures and thermochemistry on phase change materials (n-CnH2n+1NH3)(2)CuCl4(s) (n=14 and 15)

	Crystal structures and thermochemistry on phase change materials (n-CnH2n+1NH3)(2)CuCl4(s) (n=14 and 15)
	He, Dong-Hua 1; Di, You-Ying 1; Tan, Zhi-Cheng 2; Yi, Fang-Fang 1; Dan, Wen-Yan 1; Liu, Yu-Pu 1
刊名	solar energy materials and solar cells
	2011-10-01
卷号	95 期号:10 页码:2897-2906
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
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.
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
收录类别	SCI
语种	英语
WOS记录号	WOS:000293936300027
公开日期	2015-11-17
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/142329]
专题	大连化学物理研究所_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
推荐引用方式 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.