DICP OpenIR
Thermodynamic study of ibuprofen by adiabatic calorimetry and thermal analysis
Xu, F; Sun, LX; Tan, ZC; Liang, HG; Li, RL
关键词Ibuprofen Adiabatic Calorimeter Heat Capacity Thermodynamic Function Dsc Tg-dtg
刊名THERMOCHIMICA ACTA
2004-03-23
DOI10.1016/j.tca.2003.08.021
412期:1-2页:33-37
收录类别SCI
文章类型Article
项目归属1504
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Analytical ; Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]TEMPERATURE HEAT-CAPACITY ; MIXTURES ; ENTHALPY ; ACID
英文摘要Molar heat capacities of ibuprofen were precisely measured with a small sample precision automated adiabatic calorimeter over the temperature range from 80 to 400 K. The polynomial functions of C-p,C-m (J K-1 mol(-1)) versus T were established on the heat capacity measurements by means of the least fitting square method. The functions are as follows: for solid ibuprofen, at the temperature range of 79.105 K less than or equal to T less than or equal to 333.297 K, C-p,C-m = 144.27 + 77.046X + 3.5171X(2) + 10.925X(3) + 11.224X(4), where X = (T - 206.201)/127.096; for liquid ibuprofen, at the temperature range of 353.406 K less than or equal to T less than or equal to 378.785 K, C-p,C-m = 325.79 + 8.9696X - 1.6073X(2) - 1.5145 X-3, where X = (T - 366.095)/12.690. A fusion transition at T = 348.02 K was found from the C-p-T curve. The molar enthalpy and entropy of the fusion transition were determined to be 26.65 kJ mol(-1) and 76.58 J mol(-1) K-1, respectively. The thermodynamic functions on the base of the reference temperature of 298.15 K, (H-T - H-298.15) and (S-T - S-298.15), were derived. Thermal characteristic of ibuprofen was studied by thermo-gravimetric analysis (TG-DTG) and differential scanning calorimeter (DSC). The temperature of fusion, the molar enthalpy and entropy of fusion obtained by DSC were well consistent with those obtained by adiabatic calorimeter. The evaporation process of ibuprofen was investigated further by TG and DTG, and the activation energy of the evaporation process was determined to be 80.3 +/- 1.4 kJ mol(-1). (C) 2003 Elsevier B.V. All rights reserved.
语种英语
原文出处查看原文
WOS记录号WOS:000220132200005
引用统计
被引频次:29[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/81935
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
2.Hunan Inst Drug Detect, Changsha 410001, Peoples R China
推荐引用方式
GB/T 7714
Xu, F,Sun, LX,Tan, ZC,et al. Thermodynamic study of ibuprofen by adiabatic calorimetry and thermal analysis[J]. THERMOCHIMICA ACTA,2004,412(1-2):33-37.
APA Xu, F,Sun, LX,Tan, ZC,Liang, HG,&Li, RL.(2004).Thermodynamic study of ibuprofen by adiabatic calorimetry and thermal analysis.THERMOCHIMICA ACTA,412(1-2),33-37.
MLA Xu, F,et al."Thermodynamic study of ibuprofen by adiabatic calorimetry and thermal analysis".THERMOCHIMICA ACTA 412.1-2(2004):33-37.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
2004R4T4XN2WGM.pdf(133KB) 开放获取--请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Xu, F]的文章
[Sun, LX]的文章
[Tan, ZC]的文章
百度学术
百度学术中相似的文章
[Xu, F]的文章
[Sun, LX]的文章
[Tan, ZC]的文章
必应学术
必应学术中相似的文章
[Xu, F]的文章
[Sun, LX]的文章
[Tan, ZC]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。