Title: Nanostructured carbon materials for adsorption of methane and other gases

Abstract

Provided are methods for storing gases on porous adsorbents, methods for optimizing the storage of gases on porous adsorbents, methods of making porous adsorbents, and methods of gas storage of optimized compositions, as in systems containing porous adsorbents and gas adsorbed on the surface of the porous adsorbent. The disclosed methods and systems feature a constant or increasing isosteric enthalpy of adsorption as a function of uptake of the gas onto the exposed surface of a porous adsorbent. Adsorbents with a porous geometry and surface dimensions suited to a particular adsorbate are exposed to the gas at elevated pressures in the specific regime where n/V (density) is larger than predicted by the ideal gas law by more than several percent.

Inventors:

Stadie, Nicholas P.; Fultz, Brent T.; Ahn, Channing; Murialdo, Maxwell

Issue Date:

Tue Jun 30 00:00:00 EDT 2015

Research Org.:

California Institute of Technology (CalTech), Pasadena, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1187954

Patent Number(s):

9067848

Application Number:

14/050,755

Assignee:

California Institute of Technology (Pasadena, CA)

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

B01D2253/102 - Carbon
B01D2253/31 - Pore size distribution
B01D2257/7025 - Methane
B01D2259/4525 - for storage and dispensing systems
B01D53/02 - by adsorption, e.g. preparative gas chromatography {

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

B01J20/00 - Solid sorbent compositions or filter aid compositions
B01J20/02 - comprising inorganic material
B01J20/103 - {comprising silica}
B01J20/186 - {Chemical treatments in view of modifying the properties of the sieve, e.g. increasing the stability or the activity, also decreasing the activity}
B01J20/20 - comprising free carbon
B01J20/205 - {Carbon nanostructures, e.g. nanotubes, nanohorns, nanocones, nanoballs
B01J20/28057 - {Surface area, e.g. B.E.T specific surface area}
B01J20/2809 - {Monomodal or narrow distribution, uniform pores}
B01J20/3057 - {Use of a templating or imprinting material

C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS

C07C17/389 - by adsorption on solids
C07C29/76 - by physical treatment
C07C51/42 - Separation
C07C9/04 - Methane

C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10L - FUELS NOT OTHERWISE PROVIDED FOR

C10L2230/14 - for improving storage or transport of the fuel
C10L2270/10 - for transport, e.g. in pipelines as a gas hydrate slurry
C10L3/06 - Natural gas

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02C - CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]

Y02C20/10 - of nitrous oxide
Y02C20/20 - of methane

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DOE Contract Number:  

SG0001057

Resource Type:

Patent

Resource Relation:

Patent File Date: 2013 Oct 10

Country of Publication:

United States

Language:

English

Subject:

03 NATURAL GAS; 36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY