In this work, the effect of metal-organic framework (MOF) structure of MOF-5 was investigated in hydrogen adsorption based on the degree of solvent exploitation and/or sample preparation procedures. In this regard, the characterization analyses of FT-IR, BET and PXRD pattern of MOF-5 samples were used to compare their architectures with different specific surface area and porosity in hydrogen adsorption. The results show that the pore size distribution of samples is related to the main peaks in the micropores, mesopores and macropores regions. One can found that the adsorption of hydrogen at room temperature (296 K) is controlled by diffusion of adsorbed hydrogen inside the pores of the crystals. Larger diffusivities at a given pressure are expected due to diffusion in macroporous. The values of heats of adsorption on prepared sample are calculated as 3.68 and 12.45 kJ mol⁻¹ for meso and macroporous regions, respectively. These results are suggesting that weak interactions between the adsorbed hydrogen molecules and MOF crystals is occur in mesoporous regions and the adsorption into macroprous which are filling in high temperature shows strong interaction.

在这项工作中，基于溶剂的利用程度和/或样品制备程序，研究了MOF-5的金属有机骨架（MOF）结构在氢吸附中的作用。在这方面，使用MOF-5样品的FT-IR，BET和PXRD图谱进行表征分析，以比较它们在氢吸附中具有不同比表面积和孔隙率的体系结构。结果表明，样品的孔径分布与微孔，中孔和大孔区域的主峰有关。可以发现，室温（296 K）下氢的吸附受晶体孔内氢的扩散控制。由于在大孔中的扩散，在给定压力下预期会有更大的扩散。^-1分别用于中孔和大孔区域。这些结果表明，吸附的氢分子与MOF晶体之间的弱相互作用发生在中孔区域，并且在高温下填充到大颗粒中的吸附表现出强烈的相互作用。