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US 9,580,375 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.
Claims11
A method of continuously hydrogenating 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 base, in a reaction area;
- b) at least partially discharging the produced formic acid using compressed CO2, which is compressed during the reaction in step a), from the reaction area of step (a);
- and
- c) releasing the formic acid while removing the CO2 from step (b);
- wherein the base is an amine bonded to a fixed carrier.
2 more elements
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 base bonded to a fixed carrier, in a reaction area, wherein the base is an amine;
- b) at least partially discharging the produced formic acid using compressed CO2, which is compressed during the reaction in step a), from the reaction area of step (a);
- and
- c) releasing the formic acid while removing the CO2 from step (b).
1 more element
Dependencies are inferred from the claim text.