Standard enthalpy of formation and heat capacities of 3,5-di-tert-butylsalicylic acid
文献类型：期刊论文
| 作者 | Yu, HG; Tan, ZC; Liu, Y; Lan, XZ; Xu, F; Huang, XM; Sun, LX |
| 刊名 | thermochimica acta
 |
| 出版日期 | 2003-09-04 |
| 卷号 | 404期号:1-2页码:89-95 |
| 关键词 | 3 standard enthalpy of formation heat capacity enthalpy of fusion enthalpy of evaporation 5-di-tert-butylsalicylic acid |
| 英文摘要 | the constant volume energy of combustion of crystalline 3,5-di-tert-butylsalicylic acid (t-bsa) in oxygen at 298.15 k was determined using combustion calorimeter to be -8292.57 +/- 2.51 kj mol(-1). the standard molar enthalpies of combustion and formation of 3,5-di-tert-butylsalicylic acid were derived, at t = 298.15 k, delta(c)h(m)(theta) = -8302.48 +/- 2.51 kj mol(-1) and delta(f)h(m)(theta) = -744.30 +/- 3.21 kj mol(-1), respectively. the heat capacities of the compound were measured with an adiabatic calorimeter over the temperature range from 79 to 351 k. no indication of any phase transition or thermal anomaly was observed in this temperature range. the fusion and evaporation behavior of the compound were examined by thermogravimetry (tg). differential thermal analysis (dta) and differential scanning calorimetry (dsc). the molar enthalpy and entropy of fusion. delta(fus)h(m)(theta) and delta(fus)s(m)(theta), at t = 437.5 k, were determined to be 22.92 +/- 0.55 kj mol(-1) and 139.4 +/- 3.3 j mol(-1) k-1, respectively: and the molar enthalpy and entropy of evaporation, delta(vap)h(m)(theta) and delta(vap)s(m)(theta), at t = 477.5 k, were obtained as 83.88 +/- 2.1 kj mol(-1) and 341.7 +/- 8.4 j mol(-1) k-1, respectively. (c) 2003 elsevier science b.v. all rights reserved. |
| 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] | thermochemical properties ; small samples ; combustion ; calorimeter |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000185448300011 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/138213]  |
| 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.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China 2.Wuhan Univ, Dept Chem, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, HG,Tan, ZC,Liu, Y,et al. Standard enthalpy of formation and heat capacities of 3,5-di-tert-butylsalicylic acid[J]. thermochimica acta,2003,404(1-2):89-95. |
| APA | Yu, HG.,Tan, ZC.,Liu, Y.,Lan, XZ.,Xu, F.,...&Sun, LX.(2003).Standard enthalpy of formation and heat capacities of 3,5-di-tert-butylsalicylic acid.thermochimica acta,404(1-2),89-95. |
| MLA | Yu, HG,et al."Standard enthalpy of formation and heat capacities of 3,5-di-tert-butylsalicylic acid".thermochimica acta 404.1-2(2003):89-95. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
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。