Towards a continuous formic acid synthesis: a two-step carbon dioxide hydrogenation in flow
Literature Information
Helena Reymond, Juan José Corral-Pérez, Atsushi Urakawa, Philipp Rudolf von Rohr
The need for long term, large-scale storage solutions to match surplus renewable energy with demand drives technological innovation towards a low-carbon economy. As a high hydrogen density energy carrier, formic acid streamlines functional storage of unscheduled intermittent power supply. However, the unfavourable thermodynamics of its direct synthesis from CO2 and H2 call for alternative processes to achieve substantial space time yields. This preliminary study investigates the feasibility of continuously producing formic acid in a two-step process by exploiting methyl formate as a thermodynamically stable intermediate. In order to prove the concept, the qualitative efficiency of several three-reactor configurations is evaluated and discussed with respect to the efficiency of a single reactor methanol synthesis over a commercial Cu catalyst. Although concrete solutions are not available yet and identification of formic acid remains arduous, the proposed reactive pathway exceeds the thermodynamic limits of the direct synthesis path over heterogeneous catalysts, and opens up avenues for advances in clean energy production.
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Reaction Chemistry & Engineering

Reaction Chemistry & Engineering is an interdisciplinary journal reporting cutting-edge research focused on enhancing the understanding and efficiency of reactions. Reaction engineering leverages the interface where fundamental molecular chemistry meets chemical engineering and technology. Challenges in chemistry can be overcome by the application of new technologies, while engineers may find improved solutions for process development from the latest developments in reaction chemistry. Reaction Chemistry & Engineering is a unique forum for researchers whose interests span the broad areas of chemical engineering and chemical sciences to come together in solving problems of importance to wider society. All papers should be written to be approachable by readers across the engineering and chemical sciences. Papers that consider multiple scales, from the laboratory up to and including plant scale, are particularly encouraged.




