Direct synthesis of formic acid from carbon dioxide by hydrogenation in acidic media
By S. Moret, P. Dyson, G. Laurenczy. Nature Communications, 2014
611 citations recorded by the source corpus.
The chemical transformation of carbon dioxide into useful products becomes increasingly important as CO2 levels in the atmosphere continue to rise as a consequence of human activities. In this article we describe the direct hydrogenation of CO2 into formic acid using a homogeneous ruthenium catalyst, in aqueous solution and in dimethyl sulphoxide (DMSO), without any additives. In water, at 40 °C, 0.2 M formic acid can be obtained under 200 bar, however, in DMSO the same catalyst affords 1.9 M formic acid. In both solvents the catalysts can be reused multiple times without a decrease in activity. Worldwide demand for formic acid continues to grow, especially in the context of a renewable energy hydrogen carrier, and its production from CO2 without base, via the direct catalytic carbon dioxide hydrogenation, is considerably more sustainable than the existing routes. The conversion of carbon dioxide into formic acid is attractive for energy storage and chemical production, but the typical use of bases or other additives make isolation of the free acid difficult. Here, the authors report the catalytic conversion of carbon dioxide into formic acid without the need for any additives.
Subfields: Mechanical Engineering, Process Chemistry and Technology, Renewable Energy, Sustainability and the Environment
View Paper: https://www.semanticscholar.org/paper/80af74c556fe466d9a03ac1ebd96e6787058d7b8
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In Renewable Energy, Sustainability and the Environment
Citations in the corpus
- Solar-driven reforming of lignocellulose to H2 with a CdS/CdOx photocatalyst (2017, background): “2 synthesis of renewable liquid fuel.(6) To date however, H2 is almost exclusively produced through 26 reforming/gasification of fossil-derived coal, gas or oil.”