Determination of heat capacities and thermodynamic properties of Al4(OH)2(OCH3)4(H2N-BDC)3

作者:Liu, Shuang*; Sun, Li-Xian; Liu, Lan-Tao*; Zhou, Yan-Li
来源:Journal of Thermal Analysis and Calorimetry, 2019, 135(6): 3233-3239.
DOI:10.1007/s10973-018-7608-x

摘要

The molar heat capacities of one-three-dimensional metal-organic frameworks Al-4(OH)(2)(OCH3)(4)(H2N-BDC)(3) (CAU-1) were measured by temperature-modulated differential scanning calorimetry (TMDSC) over the temperature range from 213 to 393 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 elemental analysis, powder XRD, FT-IR spectrum. Moreover, the thermal stabilities and decomposition mechanisms of hydrated phase and dehydrated phase of CAU-1 were investigated by thermogravimetric spectrometer in the temperature range 298-1023 K.