多孔材料对氢气的吸附性能研究

Hydrogen isotherms for MOF-177, Zn4O(1,3,5-benzenetribenzoate)2, crystals were independently
measured by volumetric and gravimetric methods at 77 K to confirm its hydrogen uptake capacity
and to establish the importance of calibrating gas adsorption instrumentation prior to evaluating
H2 storage capacities. Reproducibility of hydrogen adsorption experiments is important because
non-systematic errors in measurements can easily occur leading to erroneous reports of capacities.
The surface excess weight percentage of hydrogen uptake in MOF-177 samples is 7.5 wt% at
70 bar, which corresponds to an absolute adsorbed amount of 11 wt%. These values are in
agreement with our previous report and with those found independently by Southwest Research
Institute. Considering its well-known structure and its significant H2 uptake properties, we believe
MOF-177 is an excellent material to serve as a benchmark adsorber. PCTPro-Evo气体吸附测量仪