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题名: Investigation on Phase Transitions and Thermodynamic Properties of 1-Dodecylamine Hydrochloride (C12H25NH3Cl)(s) by an Improved Adiabatic Calorimeter
作者: Kong, Yu-Xia1;  Di, You-Ying1;  Zhang, Ya-Qian1;  Yang, Wei-Wei1;  Tan, Zhi-Cheng2
通讯作者: You-Ying Di
关键词: Adiabatic calorimetry ;  1-Dodecylamine hydrochloride ;  Low-temperature heat capacity ;  Phase transitions
刊名: INTERNATIONAL JOURNAL OF THERMOPHYSICS
发表日期: 2009-12-01
DOI: 10.1007/s10765-009-0675-2
卷: 30, 期:6, 页:1960-1974
收录类别: SCI
文章类型: Article
部门归属: 2
项目归属: 207
产权排名: 2;5
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Thermodynamics ;  Chemistry, Physical ;  Mechanics ;  Physics, Applied
研究领域[WOS]: Thermodynamics ;  Chemistry ;  Mechanics ;  Physics
英文摘要: 1-Dodecylamine hydrochloride was synthesized by the solvent-thermal method. The structure and composition of the compound were characterized by chemical and elemental analyses, the X-ray powder diffraction technique, and X-ray crystallography. The main structure and performance of an improved automated adiabatic calorimeter are described. Low-temperature heat capacities of the title compound are measured by the new adiabatic calorimeter over the temperature range from 78 K to 397 K. Two solid-to-solid phase transitions have been observed at the peak temperatures of (330.78 +/- 0.43) K and (345.09 +/- 0.16) K. The molar enthalpies of the two phase transitions of the substance were determined to be (25.718 +/- 0.082) kJ center dot mol(-1) and (5.049 +/- 0.055) kJ center dot mol(-1), and their corresponding molar entropies were calculated as (77.752 +/- 0.250) J center dot mol(-1) center dot K-1 and (14.632 +/- 0.159) J center dot mol(-1) center dot K-1, respectively, based on the analysis of heat-capacity curves. Experimental values of heat capacities for the title compound have been fitted to two polynomial equations. In addition, two solid-to-solid phase transitions and a melting process of C12H25NH3Cl(s) have been verified by differential scanning calorimetry.
关键词[WOS]: SYNTHETIC SAPPHIRE ALPHA-AL2O3 ;  TEMPERATURE HEAT-CAPACITIES ;  STANDARD REFERENCE MATERIAL ;  THERMAL-ENERGY STORAGE ;  MOLAR ENTHALPY ;  RANGE ;  CONSTRUCTION ;  SYSTEMS ;  ACID
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000272616400016
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/102869
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, Coll Chem & Chem Engn, Liaocheng 252059, Shandong, Peoples R China
2.Chinese Acad Sci, Thermochem Lab, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Kong, Yu-Xia,Di, You-Ying,Zhang, Ya-Qian,et al. Investigation on Phase Transitions and Thermodynamic Properties of 1-Dodecylamine Hydrochloride (C12H25NH3Cl)(s) by an Improved Adiabatic Calorimeter[J]. INTERNATIONAL JOURNAL OF THERMOPHYSICS,2009,30(6):1960-1974.
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