Heat capacity and thermodynamic properties of benzyl disulfide (C14H14S2)

被引：12
作者：
Wang, Shao-Xu
Tan, Zhi-Cheng [1 ]
Li, Yan-Sheng
Li, Ying
Shi, Quan
Tong, Bo
机构：
[1] Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
[2] Dalian Jiaotong Univ, Coll Environm & Chem Engn, Dalian 116028, Peoples R China
来源：
THERMOCHIMICA ACTA | 2007年 / 463卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
benzyl disulfide; heat capacity; adiabatic calorimetry; thermal decomposition; activation energy;
D O I：
10.1016/j.tca.2007.05.014
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Heat capacities of benzyl disulfide have been measured with a high-precision automatic adiabatic calorimeter over the temperature range from 80 to 377 K. The melting point, molar enthalpy and entropy of fusion were determined to be 341.72 +/- 0.07 K, 44965 10 J mol(-1) and 130.78 +/- 0.11 J K-1 mol(-1), respectively. The thermal stability and the kinetics of thermal decomposition of the compound were investigated in air by means of thermogravimetry JG) and differential thermal analysis (DTA). TG/DTA curves showed that the decomposition proceeded through one step. The activation energy and the reaction order for one-step decomposition was calculated to be 110.7 +/- 12.3 kJ mol(-1) and 1.2 +/- 0.2 through Kissinger method. (C) 2007 Elsevier B.V. All rights reserved.
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页码：21 / 25
页数：5
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