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US 9,073,842 B2Granted
Method for producing formic acid by CO2 hydrogenation
AssigneeRheinische-Westfalische Technische Hochschule Aachen
InventorsWalter Leitner, Ulrich Hintermair, Sebastian Wesselbaum
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Abstract
The invention relates to a continuous method for producing formic acid from CO2 and extracting the formic acid using compressed CO2.
Claims7
A method for hydrogenation of CO2 to formic acid, comprising the following steps:
- a) producing formic acid by a catalytic reaction of CO2 with hydrogen in the presence of a high molecular-weight amine, in a reaction area;
- b) at least partially discharging the produced formic acid using compressed CO2 from the reaction area of step (a);
- c) releasing the formic acid while removing the CO2 from step (b).
Dependencies are inferred from the claim text.