中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 期刊论文
题名: Low temperature heat capacities and thermodynamic properties of 2-methyl-2-butanol
作者: Tong Bo1, 2;  Tan Zhi-Cheng1, 3;  Wang Shao-Xu3
通讯作者: 谭志诚
关键词: 2-methyl-2-butanol ;  heat capacity ;  phase transition ;  thermodynamic property
刊名: CHINESE JOURNAL OF CHEMISTRY
发表日期: 2008-09-01
卷: 26, 期:9, 页:1561-1566
收录类别: SCI
文章类型: Article
部门归属: 15
项目归属: 1504
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
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.
关键词[WOS]: MIXTURES ;  CALORIMETER
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000259664300004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/101437
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

Files in This Item:

There are no files associated with this item.


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

Recommended Citation:
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.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Tong Bo]'s Articles
 [Tan Zhi-Cheng]'s Articles
 [Wang Shao-Xu]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Tong Bo]‘s Articles
 [Tan Zhi-Cheng]‘s Articles
 [Wang Shao-Xu]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace