Affiliation:
1. Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan.
Abstract
Molecular hydrogen (H
2
) is one of the most important energy carriers. In the midterm future, a huge amount of H
2
will be produced from a variety of hydrocarbon sources through conversion and removal of contaminants such as CO and CO
2
. However, bypassing these purification processes is desirable, given their energy consumption and environmental impact, which ultimately increases the cost of H
2
. Here, we demonstrate a strategy to separate H
2
from a gaseous mixture of H
2
/CO/CO
2
/CH
4
that can include an excess of CO and CO
2
relative to H
2
and simultaneously store it in N-heterocyclic compounds that act as liquid organic hydrogen carriers (LOHCs), which can be applied to produce H
2
by subsequent dehydrogenation. Our results demonstrate that LOHCs can potentially be used for H
2
purification from CO- and CO
2
-rich crude H
2
in addition to their well-established use in H
2
storage.
Publisher
American Association for the Advancement of Science (AAAS)
Cited by
19 articles.
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