Problems with hydrogen production adsorbents
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Many devices used today in hydrogen production rely on molecular sieves for this purpose, but activated carbon also has a high adsorption capacity. In cases where the purity of hydrogen is not required to be extremely high, could activated carbon be used as a substitute for molecular sieves?
Molecular sieves are generally preferred, as activated carbon is less suitable for reuse.
For hydrogen production, molecular sieves are used both domestically and internationally, as they offer high separation efficiency and are cheaper than activated carbon
Activated carbon has a high adsorption capacity, but its separation coefficient for hydrogen and impurities is not necessarily high. It can be selected according to the impurity components. Also, the precision with which activated carbon controls impurities is not entirely ideal.