Title: Polyoxometalate water oxidation catalysts and methods of use thereof

Abstract

Homogeneous water oxidation catalysts (WOCs) for the oxidation of water to produce hydrogen ions and oxygen, and methods of making and using thereof are described herein. In a preferred embodiment, the WOC is a polyoxometalate WOC which is hydrolytically stable, oxidatively stable, and thermally stable. The WOC oxidized waters in the presence of an oxidant. The oxidant can be generated photochemically, using light, such as sunlight, or electrochemically using a positively biased electrode. The hydrogen ions are subsequently reduced to form hydrogen gas, for example, using a hydrogen evolution catalyst (HEC). The hydrogen gas can be used as a fuel in combustion reactions and/or in hydrogen fuel cells. The catalysts described herein exhibit higher turn over numbers, faster turn over frequencies, and/or higher oxygen yields than prior art catalysts.

Inventors:

Hill, Craig L.; Gueletii, Yurii V.; Musaev, Djamaladdin G.; Yin, Qiushi; Botar, Bogdan

Issue Date:

Tue Sep 02 00:00:00 EDT 2014

Research Org.:

Emory Univ., Atlanta, GA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1154930

Patent Number(s):

8822367

Application Number:

13/256,227

Assignee:

Emory University (Atlanta, GA)

Patent Classifications (CPCs):

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

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

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

B01J23/002 - {Mixed oxides other than spinels, e.g. perovskite}
B01J23/6527 - {Tungsten}
B01J23/888 - Tungsten
B01J2523/00 - Constitutive chemical elements of heterogeneous catalysts
B01J2523/12 - Sodium
B01J2523/13 - Potassium
B01J2523/14 - Rubidium
B01J2523/15 - Caesium
B01J2523/41 - Silicon
B01J2523/51 - Phosphorus
B01J2523/69 - Tungsten
B01J2523/821 - Ruthenium
B01J2523/845 - Cobalt
B01J27/188 - with chromium, molybdenum, tungsten or polonium
B01J27/199 - with chromium, molybdenum, tungsten or polonium
B01J35/0033 - {Electric or magnetic properties}
B01J35/004 - {Photocatalysts}

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

C01B13/0207 - {Water}
C01B3/042 - {Decomposition of water}

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F

C01G51/006 - {Compounds containing, besides cobalt, two or more other elements, with the exception of oxygen or hydrogen
C01G55/002 - {Compounds containing, besides ruthenium, rhodium, palladium, osmium, iridium, or platinum, two or more other elements, with the exception of oxygen or hydrogen

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

C01P2002/82 - by IR- or Raman-data
C01P2002/84 - by UV- or VIS- data
C01P2002/86 - by NMR- or ESR-data
C01P2002/88 - by thermal analysis data, e.g. TGA, DTA, DSC
C01P2006/40 - Electric properties

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

H01M8/0606 - with means for production of gaseous reactants

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
Y02E60/50 - Fuel cells

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DOE Contract Number:  

FG02-03ER15461

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY