Particulate filtration for sorbent-based H2 storage

A method was developed for sizing the particulate filter that can be used inside a sorption-based onboard hydrogen storage system for light-duty vehicles. The method is based on a trade-off between the pressure drop across the particulate filter (during the fill of the H-2 storage tank or during its discharge while driving) and the effect of this pressure drop on the usable amount of H-2 gas from the H-2 storage system. The permeability and filtration efficiency of the particulate filters (in the absence and presence of MOF-5 particulates) was quantified in this study, with an emphasis on meeting DOE's H-2 purity requirements.