【摘要】 采用磁力搅拌法快速合成了HKUST-1型铜基金属有机骨架材料,对HKUST-1粉末试样A进行挤条成型和离心抛丸成型处理,考察了不同试样对甲烷吸附能力的影响。采用XRD、TEM、N₂吸附-脱附等方法对试样的晶体结构和微孔结构进行了表征。表征结果显示,离心抛丸成型试样C中较多地保留了HKUST-1晶体结构特点和微孔结构特点,挤条成型试样B中HKUST-1的微孔结构破损程度高于试样C。实验结果表明,在25℃、3.5 MPa时,试样A、B和C的甲烷吸附量分别为215,63,130 cm³/g;在黏合剂种类和用量相同的条件下,试样B的理化性质低于试样C,说明成型方式是造成HKUST-1粉末成形体间差异的主要原因。更多还原

【Abstract】 Cu-based metal-organic framework HKUST-1 was prepared by magnetic stirring method. The resulting HKUST-1 powders A were molded by extrusion and centrifugal granulation. The effects of different samples on CH₄ uptake were investigated. The crystal structure and microstructure of different samples were analyzed by XRD,TEM and N₂ adsorption desorption. The results showed that more crystal structure and microstructure were preserved in centrifugal granulation sample C. Damaged microstructure of HKUST-1 in extrusion sample B was higher than sample C. Experimental results showed that CH₄ uptakes of the sample A,B and C were 215,63,130 cm³/g,respectively. With the same binding agent and dosage,the physicochemaical properties of sample B was lower than that of sample C,which can be explained by the reason that molding method was causing the difference between the molded bodies from HKUST-1 powders.更多还原