论文部分内容阅读
金属有机骨架化合物具有高表面积与多孔性特征,因而拥有良好的吸附性能。通过溶剂热法合成了一种金属有机骨架化合物FeBTB(BTB=4,4′,4″-苯-1,3,5-三-苯甲酸)。借热重分析(TG)和差示扫描量热法(DSC)可研究FeBTB的热力学性质。对FeBTB热容的测量值和温度进行了拟合,推导出热容与折合温度的多项式,并计算出FeBTB在298.15 K时的热容为441.0 J·K-1·mol-1;同时计算出其在该温度下的焓和熵。经DSC分析测出FeBTB的相变温度、相变焓和熵。
Metal-organic framework compounds have high surface area and porosity characteristics and therefore have good adsorption properties. A kind of metal-organic framework compound FeBTB (BTB = 4,4 ’, 4 "-benzene-1,3,5-tri-benzoic acid) was synthesized by solvothermal method.According to the thermogravimetric analysis (TG) and differential scanning The thermodynamic properties of FeBTB can be studied by thermal analysis (DSC). The measured values and temperature of FeBTB heat capacity are fitted and the polynomials of heat capacity and temperature are deduced. The calculated heat capacity of FeBTB at 298.15 K is 441.0 J · K-1 · mol-1, and calculate its enthalpy and entropy at the same time.The phase transition temperature, phase transition enthalpy and entropy of FeBTB were determined by DSC analysis.