Title: Ionic liquid-functionalized mesoporous sorbents and their use in the capture of polluting gases

Abstract

A composite structure for capturing a gaseous electrophilic species, the composite structure comprising mesoporous refractory sorbent particles on which an ionic liquid is covalently attached, wherein said ionic liquid includes an accessible functional group that is capable of binding to said gaseous electrophilic species. In particular embodiments, the mesoporous sorbent particles are contained within refractory hollow fibers. Also described is a method for capturing a gaseous electrophilic species by use of the above-described composite structure, wherein the gaseous electrophilic species is contacted with the composite structure. In particular embodiments thereof, cooling water is passed through the refractory hollow fibers containing the IL-functionalized sorbent particles in order to facilitate capture of the gaseous electrophilic species, and then steam is passed through the refractory hollow fibers to facilitate release of the gaseous electrophilic species such that the composite structure can be re-used to capture additional gas.

Inventors:

Lee, Jong Suk; Koros, William J.; Bhuwania, Nitesh; Hillesheim, Patrick C.; Dai, Sheng

Issue Date:

2016-01-12

Research Org.:

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1234676

Patent Number(s):

9233339

Application Number:

13/868,600

Assignee:

UT-Battelle, LLC (Oak Ridge, TN)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D2252/30 - Ionic liquids and zwitter-ions
B01D2257/302 - Sulfur oxides
B01D2257/502 - Carbon monoxide
B01D2257/504 - Carbon dioxide
B01D53/02 - by adsorption, e.g. preparative gas chromatography {
B01D53/508 - {by treating the gases with solids}
B01D53/62 - Carbon oxides

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J20/223 - {containing metals, e.g. organo-metallic compounds, coordination complexes}
B01J20/28028 - {Particles immobilised within fibres or filaments}
B01J20/28083 - {being in the range 2-50 nm, i.e. mesopores}
B01J20/3204 - {Inorganic carriers, supports or substrates}
B01J20/3263 - {comprising a cyclic structure containing at least one of the heteroatoms nitrogen, oxygen or sulfur, e.g. an heterocyclic or heteroaromatic structure}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T428/2927 - including structurally defined particulate matter
Y10T428/2991 - Coated

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DOE Contract Number:  

AC05-00OR22725

Resource Type:

Patent

Resource Relation:

Patent File Date: 2013 Apr 23

Country of Publication:

United States

Language:

English

Subject:

54 ENVIRONMENTAL SCIENCES; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY