物理化学学报 >> 2017, Vol. 33 >> Issue (6): 1114-1122.doi: 10.3866/PKU.WHXB201702213

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一种精密恒温环境微量燃烧-溶解-反应多用量热计的设计及应用

李旭1,李强国1,*(),蒋建宏1,谷惠文2,*(),李传华1,肖圣雄1,李霞1   

  1. 1 湘南学院化学生物与环境工程学院,湖南郴州423000
    2 长江大学化学与环境工程学院,湖北荆州434023
  • 收稿日期:2016-12-26 发布日期:2017-05-19
  • 通讯作者: 李强国,谷惠文 E-mail:liqiangguo@163.com;gugo@yangtzeu.edu.cn
  • 基金资助:
    国家自然科学基金(21273190);湖南省科技厅计划项目(2014TT2026)

Design and Application of a Precise Isoperibol Combus-tion-Solution-Reaction Microcalorimeter

Xu LI1,Qiang-Guo LI1,*(),Jian-Hong JIANG1,Hui-Wen GU2,*(),Chuan-Hua LI1,Sheng-Xiong XIAO1,Xia LI1   

  1. 1 College of Chemistry Biology and Environmental Engineering, Xiangnan University, Chenzhou 423043, P. R. China
    2 College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, P. R. China
  • Received:2016-12-26 Published:2017-05-19
  • Contact: Qiang-Guo LI,Hui-Wen GU E-mail:liqiangguo@163.com;gugo@yangtzeu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(21273190);Science and Technology Plan Projects of Hunan Province, China(2014TT2026)

摘要:

将SRC-100型溶解-反应量热计改进成了一种精密恒温环境微量燃烧-溶解-反应多用量热计。采用电能法标定了量热计的能当量,其值为Ccalor=(987.63±0.61)J·K-1。用该量热计分别测定了苯甲酸和丁二酸的标准质量燃烧热,分别为△cUm, Bθ(cr, T=298.15K)=-(26425.99±10.70)J·g-1和△cUm, Sθ(cr, T=298.15K)=-(12621.97±5.30)J·g-1。测量的不确定度小于0.04%,精度高于0.05%。

关键词: 微量燃烧-溶解-反应量热计, 标准质量燃烧热, 苯甲酸, 丁二酸

Abstract:

The SRC-100 type solution-reaction calorimeter was improved to a more precise and versatile isoperibol combustion-solution-reaction microcalorimeter. The energy equivalent of the calorimeter was calibrated to be Ccalor=(987.63±0.61) J·K-1 by the electric calibration method. The standard massic energy of combustion of benzoic acid and succinic acid were determined by the developed isoperibol combustion-solution-reaction microcalorimeter as △cUm, Bθ(cr, T=298.15K)=-(26425.99±10.70) J·g-1 and △cUm, Sθ(cr, T=298.15K)=-(12621.97±5.30) J·g-1, respec-tively. The uncertainty of the measurement was less than 0.04% and the accuracy was higher than 0.05%.

Key words: Combustion-solution-reaction microcalorimeter, Standard massic energy of combustion, Benzoic acid, Succinic acid

MSC2000: 

  • O642