A conservative CO-Methanol (CHOH) regeneration cycle, to capture and reutilize the greenhouse gas of CO by aqueous hydrogenation for industry-useful CHOH and to convert aqueous CHOH solution by dehydrogenation for the clean energy of hydrogen (H), is demonstrated at normal temperature and pressure (NTP) with two kinds of CuMnOS nanoflower catalysts. The [Cu]-high CuMnOS led to a CHOH yield of 21.1 mmol·gcatal.·h in the CuMnOS-CO-HO system and the other [Cu]-low one had a H yield of 7.65 mmol·gcatal.·h in the CuMnOS-CHOH-HO system. The successful redox reactions at NTP rely on active lattice oxygen of CuMnOS catalysts and its charge (hole or electron) transfer ability between Cu and Cu. The CO-hydrogenated CHOH in aqueous solution is not only a fuel but also an ideal liquid hydrogen storage system for transportation application.
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| http://dx.doi.org/10.1038/srep41194 | DOI Listing |
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