Journal
SUSTAINABLE ENERGY & FUELS
Volume 1, Issue 5, Pages 1049-1055Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7se00131b
Keywords
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Funding
- Japan Science and Technology Agency (JST), CREST
- Ministry of Economy, Trade, and Industry (METI), Japan
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High-pressure hydrogen is of great interest in the industrial utilization of hydrogen energy, especially for hydrogen fuel cell vehicles. In this work, a method of automatic high-pressure H-2 generation by the decomposition of formic acid, a recently renowned hydrogen storage material, in the presence of a heterogeneous catalyst (palladium nano-particles on a graphene oxide catalyst (Pd/PDA-rGO)) was proposed. This catalyst can effectively catalyze the decomposition of formic acid to produce high-pressure H-2 and CO2 over 35 MPa without any detectable formation of CO or other by-products. For example, a 36.3 MPa total gas pressure was successfully achieved using an aqueous solution of 6.7 mol L-1 formic acid and 6.7 mol L-1 sodium formate at 80 degrees C. This research provided a preliminary study on the automatic high-pressure hydrogen gas generation by the decomposition of formic acid without any compression facilities in the presence of a heterogeneous catalyst, which can be easily separated from the reaction process, for hydrogen energy utilization.
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