Low temperature heat capacities and thermodynamic properties of 2-methyl-2-butanol
文献类型：期刊论文
| 作者 | Tong Bo1,2; Tan Zhi-Cheng1,3; Wang Shao-Xu3 |
| 刊名 | chinese journal of chemistry
 |
| 出版日期 | 2008-09-01 |
| 卷号 | 26期号:9页码:1561-1566 |
| 关键词 | 2-methyl-2-butanol heat capacity phase transition thermodynamic property |
| 产权排序 | 1;1 |
| 通讯作者 | 谭志诚 |
| 英文摘要 | the low-temperature heat capacity c(p,m) of 2-methyl-2-butanol was precisely measured in the temperature range from 80 to 305 k by means of a small sample automated adiabatic calorimeter. three solid-solid phase transitions and one solid-liquid phase transition were found at t = 146.355, 149.929, 214.395 and 262.706 k from the experimental c(p)-t curve, respectively. the dependence of heat capacity on temperature was fitted to the following polynomial equations with a least square method. in the temperature range of 80 to 140 k, c(p,m)=39.208+8.0724x-1.9583x(2)+10.06x(3)+1.799x(4)-7.2778x(5)+1.4919x(6),x=(t-110)/30; in the temperature range of 155 to 210 k, c(p,m) = 70.701+10.631x+12.767x(2)+0.3583x(3)-22.272x(4)-0.417x(5)+ 12.055x(6), x=(t-182.5)/27.5; in the temperature range of 220 to 250 k, c(p,m)= 99.176+7.7199x-26.138x(2)+28.949x(3)+0.7599x(4)-25.823x(5)+21.131x(6),x =(t-235)/15; and in the temperature range of 270 to 305 k, c(p,m)= 121.73+ 16.53x-1.0732x(2)-34.937x(3)-19.865x(4)+24.324x(5)+18.544x(6), x=(t- 287.5)/17.5. the molar enthalpies of these transitions were determined to be 0.9392, 1.541, 0.6646 and 2.239 kj center dot mol(-1), respectively. the molar entropies of these transitions were determined to be 6.417, 10.28, 3.100 and 8.527 j center dot k(-1)center dot 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 305 k with an interval of 5 k. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, multidisciplinary |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | mixtures ; calorimeter |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000259664300004 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/101437]  |
| 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, Liaoning, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Dalian Jiaotong Univ, Coll Environm & Chem Engn, Dalian 116028, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tong Bo,Tan Zhi-Cheng,Wang Shao-Xu. Low temperature heat capacities and thermodynamic properties of 2-methyl-2-butanol[J]. chinese journal of chemistry,2008,26(9):1561-1566. |
| APA | Tong Bo,Tan Zhi-Cheng,&Wang Shao-Xu.(2008).Low temperature heat capacities and thermodynamic properties of 2-methyl-2-butanol.chinese journal of chemistry,26(9),1561-1566. |
| MLA | Tong Bo,et al."Low temperature heat capacities and thermodynamic properties of 2-methyl-2-butanol".chinese journal of chemistry 26.9(2008):1561-1566. |
入库方式： OAI收割
来源：大连化学物理研究所
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