Low-Temperature Heat Capacities and Thermodynamic Properties of 2-Aminopyridine

Chun-Sheng Zhou; Feng-Ying Chen; Yan-Qing Di; Yong-Liang Liu; Yan-Feng Liu

doi:10.14233/ajchem.2016.19384

Issue

Vol. 28 No. 3 (2016): Vol 28 Issue 3

Issue Published : December 5, 2015

This work is licensed under a Creative Commons Attribution 4.0 International License.

Low-Temperature Heat Capacities and Thermodynamic Properties of 2-Aminopyridine

https://doi.org/10.14233/ajchem.2016.19384

Chun-Sheng Zhou

Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, College of Chemical Engineering and Modern Materials, Shangluo University, Shangluo 726000, Shaanxi Province, P.R. China

Feng-Ying Chen

Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, College of Chemical Engineering and Modern Materials, Shangluo University, Shangluo 726000, Shaanxi Province, P.R. China

Yan-Qing Di

Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, College of Chemical Engineering and Modern Materials, Shangluo University, Shangluo 726000, Shaanxi Province, P.R. China

Yong-Liang Liu

Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, College of Chemical Engineering and Modern Materials, Shangluo University, Shangluo 726000, Shaanxi Province, P.R. China

Yan-Feng Liu

Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, College of Chemical Engineering and Modern Materials, Shangluo University, Shangluo 726000, Shaanxi Province, P.R. China

Corresponding Author(s) : Chun-Sheng Zhou

18729522962@126.com

Asian Journal of Chemistry, Vol. 28 No. 3 (2016): Vol 28 Issue 3
Article Published : December 5, 2015

Abstract

Low-temperature heat capacities of 2-aminopyridine have been measured by a precision automatic adiabatic calorimeter over the temperature range from 78 to 370 K. A solid-liquid phase transition was observed from 315 to 335 K. The peak temperature, molar enthalpy and entropy of the solid-liquid phase transition were determined to be: (330.09 ± 0.01) K, (18.33 ± 0.05) kJ mol^-1 and (55.53 ± 0.14) J K^-1 mol^-1, respectively. In addition, the mole fraction purity, the melting temperature of the given sample and that of pure sample were calculated to be (99.54 ± 0.06) %, (330.20 ± 0.01) K and (330.43 ± 0.01) K by means of fractional melting method. The results showed that the melting temperature of the sample from adiabatic calorimetry agreed basically with that from theoretical analysis of the purity.

Keywords

2-Aminopyridine Adiabatic calorimetry Heat capacity Melting process Thermodynamic function Purity analysis

Zhou, C.-S., Chen, F.-Y., Di, Y.-Q., Liu, Y.-L., & Liu, Y.-F. (2015). Low-Temperature Heat Capacities and Thermodynamic Properties of 2-Aminopyridine. Asian Journal of Chemistry, 28(3), 529–534. https://doi.org/10.14233/ajchem.2016.19384

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References

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References

J. Chen, R.J. Qu and Y.Z. Niu, J. Ludong Univ. (Nat. Sci. Ed.), 22, 333 (2006).

J. Bickerton, G. Pilcher and G. Al-Takhin, J. Chem. Thermodyn., 16, 373 (1984); doi:10.1016/0021-9614(84)90175-7.

W. Brostow, J.C. Iniguez, M.A. Shmorhun and J.A. Valdez, Mater. Chem. Phys., 12, 557 (1985); doi:10.1016/0254-0584(85)90042-2.

C.W.N. Cumper, R.F.A. Ginman, D.G. Redford and A.I. Vogel, J. Chem. Soc., 1731 (1963); doi:10.1039/jr9630001731.

D. Wei and L. Chen, J. Chem. Eng. Data, 54, 1129 (2009); doi:10.1021/je800841v.

D. Wei and L. Chen, J. Chem. Eng. Data, 54, 1098 (2009); doi:10.1021/je800768x.

J. Buckingham and S.M. Donaghy, Dictionary of Organic Compounds, Published by Chapman & Hall: New York, edn 5, Vol. 1, p. 796 (1982).

Z.C. Tan, G.Y. Sun, Y. Sun, A. Yin, W. Wang, J. Ye and L. Zhou, J. Therm. Anal. Calorim., 45, 59 (1995); doi:10.1007/BF02548664.

Z.C. Tan, B.P. Liu, J.B. Yan and L.X. Sun, J. Comput. Appl. Chem., 20, 264 (2003).

Z.C. Tan, Q. Shi, B.P. Liu and H.T. Zhang, J. Therm. Anal. Calorim., 92, 367 (2008); doi:10.1007/s10973-007-8954-2.

D.A. Ditmars, S. Ishihara, S.S. Chang, G. Bernstein and E.D. West, J. Res. Natl. Bur. Stand., 87, 159 (1982); doi:10.6028/jres.087.012.

Y.Y. Di, Z.C. Tan, X.M. Wu, S.H. Meng and S.S. Qu, Thermochim. Acta, 356, 143 (2000); doi:10.1016/S0040-6031(00)00479-2.

J.H. Badley, J. Phys. Chem., 63, 1991 (1959); doi:10.1021/j150582a002.

S.V.R. Mastrangelo and R.W. Dornte, J. Am. Chem. Soc., 77, 6200 (1955); doi:10.1021/ja01628a037.

Issue

Vol. 28 No. 3 (2016): Vol 28 Issue 3

Low-Temperature Heat Capacities and Thermodynamic Properties of 2-Aminopyridine

Corresponding Author(s) : Chun-Sheng Zhou

Abstract

Keywords

Full Article

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