Journal
CHEMICAL SCIENCE
Volume 8, Issue 11, Pages 7498-7504Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7sc01778b
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Funding
- Ministry of Science and Technology of China [2016YFE0105700, 2016YFA0200700]
- National Natural Science Foundation of China [21373264, 21573275]
- Natural Science Foundation of Jiangsu Province [BK20150362]
- Suzhou Institute of Nano-tech and Nano-bionics [Y3AAA11004]
- Thousand Youth Talents Plan [Y3BQA11001]
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As a promising hydrogen storage medium methanol has many advantages such as a high hydrogen content (12.5 wt%) and low-cost. However, conventional methanol-water reforming methods usually require a high temperature (>200 degrees C). In this research, we successfully designed an effective strategy to fully convert methanol to hydrogen for at least 1900 min (similar to 32 h) at near-room temperature. The strategy involves two main procedures, which are CH3OH -> HCOOH -> H-2 and CH3OH -> NADH -> H-2. HCOOH and the reduced form of nicotinamide adenine dinucleotide (NADH) are simultaneously produced through the dehydrogenation of methanol by the cooperation of alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (ALDH). Subsequently, HCOOH is converted to H-2 by a new iridium polymer complex catalyst and an enzyme mimic is used to convert NADH to H-2 and nicotinamide adenine dinucleotide (NAD(+)). NAD(+) can then be reconverted to NADH by repeating the dehydrogenation of methanol. This strategy and the catalysts invented in this research can also be applied to hydrogen production from other small organic molecules (e.g. ethanol) or biomass (e.g. glucose), and thus will have a high impact on hydrogen storage and applications.
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