Phosphonium-based ionic liquids and their use in the capture of polluting gases

Dai, Sheng; Wang, Congmin; Luo, Huimin; Jiang, De-en

Phosphonium-based ionic liquids and their use in the capture of polluting gases

Patent · Tue Jun 06 00:00:00 EDT 2017

OSTI ID:1361551

Dai, Sheng; Wang, Congmin; Luo, Huimin; Jiang, De-en

An ionic liquid composition having the following chemical structural formula: ##STR00001## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are independently selected from hydrocarbon groups containing at least 1 and up to 20 carbon atoms, and X.sup.- is a cyclic anion that possesses a negatively-charged group reactive with a gaseous electrophilic species, particularly carbon dioxide or sulfur dioxide. Methods for capturing a gaseous electrophilic species, such as CO.sub.2 or SO.sub.2, by contacting the gaseous electrophilic species with an ionic liquid according to Formula (1) are also described.

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-00OR22725

Assignee:: UT-BATTELLE, LLC

Patent Number(s):: 9,670,237

Application Number:: 13/240,275

OSTI ID:: 1361551

Country of Publication:: United States

Language:: English

References (11)

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