| http://www.w3.org/ns/prov#value | - For example, the invention can be used to advantage in separating and purifying hydrogen present as a major component of a feed gas mixture also containing carbon dioxide as a selectively adsorbable component, commonly together with one or more additional minor components to be removed as undesired impurities, such as nitrogen, argon, carbon monoxide, light saturated and unsaturated hydrocarbons,
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