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Shifting the equilibrium of methanol synthesis from CO2 by in situ absorption using ionic liquid media

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Abstract

Renewable energy sources such as wind and solar power generate fluctuating electric energy. To bridge energy-lean times and to utilize the temporal surplus of electricity production large amounts of energy must be stored. One promising approach is the chemical storage in methanol that is formed from renewable H2 from water electrolysis and CO2. In our contribution we demonstrate a way to increase the methanol yields in CO2 hydrogenation significantly by in situ sorption of methanol and water in alkali salt-doped ionic liquids (ILs). The reaction and product sorption take place in a single reactor vessel which shifts the methanol yield from the thermodynamic equilibrium of 25.3% at 75 bar (H2 : CO2 = 3 : 1) and 250 °C up to 60%.

Graphical abstract: Shifting the equilibrium of methanol synthesis from CO2 by in situ absorption using ionic liquid media

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Publication details

The article was received on 11 Jul 2019, accepted on 13 Sep 2019 and first published on 16 Sep 2019


Article type: Paper
DOI: 10.1039/C9SE00494G
Sustainable Energy Fuels, 2019, Advance Article

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    Shifting the equilibrium of methanol synthesis from CO2 by in situ absorption using ionic liquid media

    J. Reichert, S. Maerten, K. Meltzer, A. Tremel, M. Baldauf, P. Wasserscheid and J. Albert, Sustainable Energy Fuels, 2019, Advance Article , DOI: 10.1039/C9SE00494G

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