Abstract
The molar heat capacities of one–three-dimensional zeolitic imidazolate frameworks Zn(C4H6N2)2 (ZIF-8) were measured by temperature-modulated differential scanning calorimetry over the temperature range from 213 to 423 K for the first time. No phase transition or thermal anomaly was observed in the experimental temperature range. The fundamental thermodynamic parameters such as entropy and enthalpy relative to 298.15 K were calculated based on the experimentally determined molar heat capacities. The compound was characterized by powder XRD and FT-IR spectroscopy. Moreover, the thermal decomposition characteristics of ZIF-8 were investigated by thermogravimetry spectrometer (TG).
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Acknowledgements
This work was financially supported by the National Natural Science Foundation of China (Nos. 21503129, 21572126, 21675109, 61571062), Education Department of Henan Province (No. 15A150073).
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Liu, S., Sun, LX., Zhou, YL. et al. Heat capacities and thermodynamic properties of a Zn-based zeolitic imidazolate framework. J Therm Anal Calorim 135, 3191–3196 (2019). https://doi.org/10.1007/s10973-018-7605-0
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DOI: https://doi.org/10.1007/s10973-018-7605-0