A novel two-dimensional metal organic framework MgBTC [MgBTC(OCN)2·2H2O, where BTC = 1,3,5-benzenetricarboxylate] has been synthesized solvothermally and characterized by single crystal XRD, powder
XRD, FT-IR spectra. The low-temperature molar heat capacities of MgBTC were measured by temperature modulated differential
scanning calorimetry (TMDSC) over the temperature range from 190 to 350 K for the first time. No phase transition or thermal
anomaly was observed in the experimental temperature range. The thermodynamic parameters of MgBTC such as entropy and enthalpy
relative to reference temperature of 298.15 K were derived based on the above molar heat capacities data. Moreover, the thermal
stability and decomposition of MgBTC was further investigated through thermogravimetry (TG)-mass spectrometer (MS). Four stages
of mass loss were observed in the TG curve. TG-MS curve indicated that the products of oxidative degradation of MgBTC are
H2O, N2, CO2 and CO. The powder XRD showed that the mixture after TG contains MgO and graphite.
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.