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US 10,286,355 B2Granted
Systems and methods incorporating ionic liquids for electrochemically mediated capturing of lewis acid gases
AssigneeMassachusetts Institute of Technology
InventorsTrevor Alan Hatton, Paul Brown, Sahag Voskian
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Abstract
The present invention generally relates to methods and systems for capturing a Lewis acid gas (e.g., CO2). In some embodiments, the methods and systems utilize an ionic liquid incorporated into one or more electrochemical cells.
Claims20
A method for capturing a Lewis acid gas, comprising:
- providing a system comprising a first zone and a second zone in fluid connection with the first zone, wherein:
- the first zone comprises a functional ionic liquid comprising a cation and an anion;
- and
- the second zone comprises a complexation agent capable of associating and/or disassociating the cation to and/or from the functional ionic liquid upon exposure to an electrical potential;
- exposing the ionic liquid to the Lewis acid gas in the first zone, wherein the cation associates with the Lewis acid gas to form a cation-Lewis-acid-gas complex;
- and
- exposing the cation-Lewis-acid-gas complex to the complexation agent in the second zone,
- wherein the step of exposing the cation-Lewis-acid-gas complex to the complexation agent in the second zone comprises applying an electrical potential to the complexation agent, and
- wherein the complexation agent associates with the cation to form a cation-complexation agent complex and the Lewis acid gas is released to form free Lewis acid gas.
6 more elements
Dependencies are inferred from the claim text.