多孔材料[ZnNa(H3btc)(H2O)2]·(H2O)2的合成、晶体结构及吸附性能研究

Study on synthesis,crystal structure and adsorption properties of[ZnNa(H_3btc)(H_2O)_2]·(H_2O)_2

合成了一种多孔金属有机骨架材料[ZnNa(H3btc)(H2O)2].(H2O)2,分析晶体结构,并采用体积法气体吸附实验,考察了该配合物的吸附气体性能。实验测试结果表是:该配合物为双核,中心Zn2+与三羧基和二个水构成双四面体配位模式),中心Na+与四羧基和二个水构成正八面体配位模式;该配合物对CO2饱和吸附量较大,在p=20bar,t=20℃条件下达到14.25mmol/g,且随着温度升高,可缩短饱和吸附时间,但吸附性能有所下降。

A porous metal organic framework materials （MOFs）was synthesized. The crystal structure of EZnNa （Ha btc）（H2O）23 . （H2O）2 was analyzed, and the adsorption properties of the complexes were investigated with volume method. Experimental results showed that the complex belonged to the dual-core, Zn^2＋ and Na^＋ coordinated with carboxyl group and water. The saturated adsorption CO2 capacity of the complex was large and it was up to 14. 25mmol/g on the condition of p = 20bar,t = 20. Saturation adsorption-time became short and its adsorption performance declined as temperature increaseing.