Title: Membrane for hydrogen recovery from streams containing hydrogen sulfide

Abstract

A membrane for hydrogen recovery from streams containing hydrogen sulfide is provided. The membrane comprises a substrate, a hydrogen permeable first membrane layer deposited on the substrate, and a second membrane layer deposited on the first layer. The second layer contains sulfides of transition metals and positioned on the on a feed side of the hydrogen sulfide stream. The present invention also includes a method for the direct decomposition of hydrogen sulfide to hydrogen and sulfur.

Inventors:

Agarwal, Pradeep K.

Issue Date:

Tue Jan 16 00:00:00 EST 2007

Research Org.:

Univ. of Wyoming, Laramie, WY (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1176072

Patent Number(s):

7163670

Application Number:

11/002,612

Assignee:

University Of Wyoming (Laramie, WY)

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

B01D2323/46 - Impregnation
B01D2325/10 - Catalysts being present on the surface of the membrane or in the pores
B01D2325/12 - Adsorbents being present on the surface of the membranes or in the pores
B01D53/228 - {characterised by specific membranes}
B01D67/0069 - {by deposition from the liquid phase, e.g. electrochemical deposition
B01D67/0072 - {by deposition from the gaseous phase, e.g. sputtering, CVD, PVD}
B01D69/12 - Composite membranes
B01D71/02 - Inorganic material
B01D71/022 - {Metals}

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

B01J20/28033 - {Membrane, sheet, cloth, pad, lamellar or mat}
B01J35/065 - {Membranes}

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

C01B17/0495 - {by dissociation of hydrogen sulfide into the elements}
C01B2203/0266 - containing a decomposition step
C01B2203/0405 - Purification by membrane separation
C01B2203/041 - In-situ membrane purification during hydrogen production
C01B2203/0485 - the impurity being a sulfur compound
C01B3/04 - by decomposition of inorganic compounds, e.g. ammonia {
C01B3/503 - {characterised by the membrane}
C01B3/505 - {Membranes containing palladium}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E60/36 - Hydrogen production from non-carbon containing sources

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DOE Contract Number:  

FC02-91ER75680

Resource Type:

Patent

Resource Relation:

Patent File Date: 2004 Dec 02

Country of Publication:

United States

Language:

English

Subject:

08 HYDROGEN