Journal
CHEMSUSCHEM
Volume 11, Issue 5, Pages 864-871Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201702359
Keywords
enzymes; formic acid; hydrogen; iridium; methanol
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]
- Collaborative Innovation Center of Suzhou Nano Science and Technology
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As an excellent hydrogen-storage medium, methanol has many advantages, such as high hydrogen content (12.6 wt%), low cost, and availability from biomass or photocatalysis. However, conventional methanol-water reforming usually proceeds at high temperatures. In this research, we successfully designed a new effective strategy to generate hydrogen from methanol at near-room temperature. The strategy involved two main processes: CH3OH -> HCOOH -> H-2 and NADH -> HCOOH -> H-2. The first process (CH3OH -> HCOOH -> H-2) was performed by an alcohol dehydrogenase (ADH), an aldehyde dehydrogenase (ALDH), and an Ir catalyst. The second procedure (NADH -> HCOOH -> H-2) was performed by formate dehydrogenase (FDH) and the Ir catalyst. The Ir catalyst used was a previously reported polymer complex catalyst [Cp*IrCl2(ppy); Cp* = pentamethylcyclopentadienyl, ppy = polypyrrole] with high catalytic activity for the decomposition of formic acid at room temperature and is compatible with enzymes, coenzymes, and poisoning chemicals. Our results revealed that the optimum hydrogen generation rate could reach up to 17.8 mu mol h(-1)g(cat)(-1) under weak basic conditions at 30 degrees C. This will have high impact on hydrogen storage, production, and applications and should also provide new inspiration for hydrogen generation from methanol.
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