合成HKUST-1金属有机骨架材料的母液及其再结晶性能

以硝酸铜为金属离子、1,3,5 均苯三甲酸（H3BTC）为配体，在水热条件下合成了铜基金属有机骨架材料（HKUST 1）。以甲烷作为吸附存储对象，研究了HKUST 1材料及其母液再结晶材料理化性质的变化趋势，得到其甲烷吸附等温线。结果表明，经过3次母液再结晶的产物仍然具有与HKUST 1相似的晶体结构和微孔结构，其BET比表面积和微孔体积分别为1984 m2/g和0722 cm3/g。在25℃和3500 kPa条件下，3次再结晶产物的甲烷吸附量为207 cm3/g，母体HKUST 1材料的甲烷吸附量为226 cm3/g，说明再结晶产物具有一定的气体吸附存储能力和应用价值。。

Investigation on Mother Liquor of HKUST-1 Metal-Organic Framework Synthesis and Its Recrystallization Performance

Cu based metal organic framework (HKUST 1) was synthesized with copper nitrate hydrate as the metal source and 1,3,5 benzenetricarboxylic acid (H3BTC) as the organic ligand under hydrothermal conditions. CH4 was used as the adsorption object, the variation trend of physicochemical properties between parent HKUST 1 and recrystallized products was studied, and the CH4 adsorption isotherms were obtained. Results show that the crystal structure and the microstructure of the third recrystallized products are similar as those of the parent HKUST 1, with BET surface area and micropore volume of 1984 m2/g and 0722 cm3/g, respectively. The CH4 adsorption capacities of the third recrystallized products and the parent HKUST 1 were 207 cm3/g and 226 cm3/g at 25℃ under 3500 kPa, which confirms that the recrystallized products have application potential in gas adsorption.