Patent · US Active

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

US9670237B2 · kind B2 · utility

2Cited by

1References

35Claims

0Family size

Assignee

UT-BATTELLE, LLC · US

Inventors

Sheng Dai · Knoxville, US
Congmin Wang · Hangzhou City, CN
Huimin Luo · Knoxville, US
De-en Jiang · Knoxville, US

Key dates

Filing date	Sep 22, 2011
Grant date	Jun 6, 2017
Priority date	—
Expiry date	May 9, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02C20/40
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

An ionic liquid composition having the following chemical structural formula:wherein R1, R2, R3, and R4 are independently selected from hydrocarbon groups containing at least 1 and up to 20 carbon atoms, and X− 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 CO2 or SO2, by contacting the gaseous electrophilic species with an ionic liquid according to Formula (1) are also described.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.