Thermodynamic investigation of several natural polyols (II) - Heat capacities and thermodynamic properties of sorbitol
文献类型：期刊论文
| 作者 | Tong, B.1,3; Tan, Z. C.1,2; Shi, Q.1,3; Li, Y. S.2; Wang, S. X.2 |
| 刊名 | journal of thermal analysis and calorimetry
 |
| 出版日期 | 2008-02-01 |
| 卷号 | 91期号:2页码:463-469 |
| 关键词 | DSC heat capacity phase transition sorbitol TG-DTG thermodynamic properties |
| 产权排序 | 1;1 |
| 通讯作者 | 谭志诚 |
| 英文摘要 | the low-temperature heat capacity c-p,c-m of sorbitol was precisely measured in the temperature range from 80 to 390 k by means of a small sample automated adiabatic calorimeter. a solid-liquid phase transition was found at t=369.157 k from the experimental c-p-t curve. the dependence of heat capacity on the temperature was fitted to the following polynomial equations with least square method. in the temperature range of 80 to 355 k, c-p,c-m/j k-1 mol(-1)=170.17+157.75x+128.03x(2)-146.44x(3)-335.66x(4)+177.71x(5)306.15x(6), x= [(t/k)-217.5]/137.5. in the temperature range of 375 to 390 k, c-p,c-m/j k-1 mol(-1)=518.13+3.2819x, x=[(t/k)-382.5]/7.5. the molar enthalpy and entropy of this transition were determined to be 30.35 +/- 0.15 kj mol(-1) and 82.22 +/- 0.41 j k-1 mol(-1) respectively. the thermodynamic functions [h-t-h-298.15] and [s-t-s-298.15], were derived from the heat capacity data in the temperature range of 80 to 390 k with an interval of 5 k. dsc and tg measurements were performed to study the thermostability of the compound. the results were in agreement with those obtained from heat capacity measurements. |
| 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] | phase |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000252994700020 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/100393]  |
| 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.Dalian Univ Technol, Coll Environm Sci & Engn, Dalian 116023, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tong, B.,Tan, Z. C.,Shi, Q.,et al. Thermodynamic investigation of several natural polyols (II) - Heat capacities and thermodynamic properties of sorbitol[J]. journal of thermal analysis and calorimetry,2008,91(2):463-469. |
| APA | Tong, B.,Tan, Z. C.,Shi, Q.,Li, Y. S.,&Wang, S. X..(2008).Thermodynamic investigation of several natural polyols (II) - Heat capacities and thermodynamic properties of sorbitol.journal of thermal analysis and calorimetry,91(2),463-469. |
| MLA | Tong, B.,et al."Thermodynamic investigation of several natural polyols (II) - Heat capacities and thermodynamic properties of sorbitol".journal of thermal analysis and calorimetry 91.2(2008):463-469. |
入库方式： OAI收割
来源：大连化学物理研究所
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