A novel liquid organic hydrogen carrier system based on catalytic peptide formation and hydrogenation

Peng Hu, Eran Fogler, Yael Diskin-Posner, Mark A. Iron and David Milstein ()
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Peng Hu: Weizmann Institute of Science
Eran Fogler: Weizmann Institute of Science
Yael Diskin-Posner: Weizmann Institute of Science
Mark A. Iron: Weizmann Institute of Science
David Milstein: Weizmann Institute of Science

Nature Communications, 2015, vol. 6, issue 1, 1-7

Abstract: Abstract Hydrogen is an efficient green fuel, but its low energy density when stored under high pressure or cryogenically, and safety issues, presents significant disadvantages; hence finding efficient and safe hydrogen carriers is a major challenge. Of special interest are liquid organic hydrogen carriers (LOHCs), which can be readily loaded and unloaded with considerable amounts of hydrogen. However, disadvantages include high hydrogen pressure requirements, high reaction temperatures for both hydrogenation and dehydrogenation steps, which require different catalysts, and high LOHC cost. Here we present a readily reversible LOHC system based on catalytic peptide formation and hydrogenation, using an inexpensive, safe and abundant organic compound with high potential capacity to store and release hydrogen, applying the same catalyst for loading and unloading hydrogen under relatively mild conditions. Mechanistic insight of the catalytic reaction is provided. We believe that these findings may lead to the development of an inexpensive, safe and clean liquid hydrogen carrier system.

Date: 2015
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DOI: 10.1038/ncomms7859

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