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Heat capacities and thermodynamic properties of a novel mixed-ligands MOFs

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Abstract

A novel metal-organic frameworks [Cu2(OH)(2,2′-bpy)2(BTC) · 2H2O]n (CuMOF, BTC = benzene-1,3,5-tricarboxylic acid, 2,2′-bpy = 2,2′-bipyridine) has been synthesized hydrothermally and characterized by single crystal XRD, FT-IR spectra. The low-temperature molar heat capacities were measured by temperature modulated differential scanning calorimetry (TMDSC) for the first time. The thermodynamic parameters such as entropy and enthalpy relative to reference temperature 298.15 K were derived based on the above molar heat capacity data. Moreover, the thermal stability and the decomposition mechanism of CuMOF were investigated by TG-MS (thermogravimetry-mass spectrometer). A four-stage mass loss was observed in the TG curve. MS curve indicated that the gas products for oxidative degradation of CuMOF were H2O, CO2, NO and NO2.

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Acknowledgements

The authors gratefully acknowledge the National Nature Science Foundation of China under Grant No. 50671098, U0734005 and the Chinese National High Tech. “863” program No. 2007AA05Z102 and 2007AA05Z115 for financial support to this work.

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Authors and Affiliations

  1. Materials and Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, 116023, Dalian, People’s Republic of China

    Li-Fang Song, Chun-Hong Jiang, Jian Zhang & Li-Xian Sun

  2. Graduate School of the Chinese Academy of Sciences, 100049, Beijing, People’s Republic of China

    Li-Fang Song & Chun-Hong Jiang

  3. Faculty of Chemistry and Chemical Engineering, Liaoning Normal University, 116029, Dalian, People’s Republic of China

    Fen Xu, Wan-Sheng You & Yi Zhao

  4. Applied Chemistry Institute of R & D Center of PetroChina Pipeline Company, 51 Jinguang Road, 065000, Langfang, Hebei, People’s Republic of China

    Zhi-Heng Zhang

  5. Department of Nanochemistry, Faculty of Engineering, Tokyo Polytechnic University, Atsugi, Kanagawa, 2430297, Japan

    Mei-Han Wang & Yutake Sawada

  6. School of Chemistry & Biological Engineering, Changsha University of Science & Technology, 410076, Changsha, China

    Zhong Cao & Ju-Lan Zeng

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  1. Li-Fang Song
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  2. Chun-Hong Jiang
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  5. Fen Xu
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  7. Yi Zhao
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  8. Zhi-Heng Zhang
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  9. Mei-Han Wang
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  12. Ju-Lan Zeng
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Corresponding author

Correspondence to Li-Xian Sun.

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Song, LF., Jiang, CH., Zhang, J. et al. Heat capacities and thermodynamic properties of a novel mixed-ligands MOFs. J Therm Anal Calorim 100, 679–684 (2010). https://doi.org/10.1007/s10973-009-0207-0

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  • DOI: https://doi.org/10.1007/s10973-009-0207-0

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