Thermodynamic properties of carbynoid structures in the 0—340 K range

被引：0
作者：
B. V. Lebedev
T. A. Bykova
I. I. Vointseva
机构：
[1] Research Institute of Chemistry at the N. I. Lobachevsky Nizhni Novgorod State University,A. N. Nesmeyanov Institute of Organoelement Compounds
[2] Russian Academy of Sciences,undefined
来源：
Russian Chemical Bulletin | 2001年 / 50卷
关键词：
carbynoid structure; carbyne; heat capacity; enthalpy; entropy; Gibbs function; calorimetry; thermodynamics;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The temperature dependences of the heat capacity (Cp°) of carbynoid structures prepared by alkaline dehydrochlorination of poly(vinylidene chloride) and 1,1,2- and 1,2,3-polytrichlorobutadienes were studied by adiabatic vacuum calorimetry between 5 and 340 K with an accuracy of ∼0.2%. The low-temperature relaxation transitions and abnormal patterns of the Cp° vs.T dependences were identified and characterized. The experimental results were used to calculate the thermodynamic functions Cp°(T), H°(T) – H°(0), S°(T) – S°(0), and G°(T) – H°(0) for 0—340 K. These data were compared with the corresponding data for carbyne produced by oxidative dehydropolycondensation of acetylene, which is a mixture of amorphous α- and β-forms with a minor impurity of crystals of both forms.
引用
收藏
页码：1533 / 1538
页数：5
相关论文
共 42 条
  • [1] Kasatochkin V. I.(1974)undefined Dokl. Akad. Nauk SSSR 214 587-undefined
  • [2] Korshak V. V.(1991)undefined Usp. Khim. 60 764-undefined
  • [3] Sladkov A. M.(1996)undefined Vysokomolek. Soedin., Ser. A 38 1116-undefined
  • [4] Elizen V. M.(1987)undefined Vysokomolek. Soedin., Ser. A 29 2654-undefined
  • [5] Evsyukov S. E.(1988)undefined Makromol. Chem., Rapid Commun. 9 135-undefined
  • [6] Kudryavtsev Y. P.(1997)undefined J. Chem. Thermodyn. 29 623-undefined
  • [7] Korshak Y. V.(1966)undefined Dokl. Akad. Nauk SSSR 168 599-undefined
  • [8] Vointseva I. I.(1996)undefined Vysokomolek. Soedin., Ser. A 38 999-undefined
  • [9] Gil'man L. M.(1979)undefined Vysokomolek. Soedin., Ser. A 21 1031-undefined
  • [10] Kudryavtsev Y. P.(1955)undefined J. Chem. Soc. 77 4774-undefined
12345