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Heat capacities and thermodynamic properties of one manganese-based MOFs |
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| Authors: | Li-Fang Song Chun-Hong Jiang Cheng-Li Jiao Jian Zhang Li-Xian Sun Fen Xu Qing-Zhu Jiao Yong-Heng Xing Yong Du Zhong Cao Feng-Lei Huang |
| Affiliation: | 1. Materials and Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, People’s Republic of China 2. Graduate School of the Chinese Academy of Sciences, 100049, Beijing, People’s Republic of China 3. Faculty of Chemistry and Chemical Engineering, Liaoning Normal University, 116029, Dalian, People’s Republic of China 4. State Key Laboratory of Powder Metallurgy, Central South University, 410083, Changsha, People’s Republic of China 5. College of Chemistry and Biological Engineering, Changsha University of Science and Technology, 410076, Changsha, People’s Republic of China 6. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, 100081, Beijing, People’s Republic of China |
| Abstract: | A metal-organic framework [Mn(4,4′-bipy)(1,3-BDC)] n (MnMOF, 1,3-BDC = 1,3-benzene dicarboxylate, 4,4′-bipy = 4,4′-bipyridine) has been synthesized hydrothermally and characterized by single crystal XRD and FT-IR spectrum. The low-temperature molar heat capacities of MnMOF were measured by temperature-modulated differential scanning calorimetry 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 MnMOF were investigated by thermogravimetry analysis-mass spectrometer. A two-stage mass loss was observed in air flow. MS curves indicated that the gas products of oxidative degradation were H2O, CO2, NO, and NO2. |
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