Molecular metal-Oxo catalysts for generating hydrogen from water
Abstract
A composition of matter suitable for the generation of hydrogen from water is described, the positively charged cation of the composition having the general formula [(PY5W.sub.2)MO].sup.2+, wherein PY5W.sub.2 is (NC.sub.5XYZ)(NC.sub.5H.sub.4).sub.4C.sub.2W.sub.2, M is a transition metal, and W, X, Y, and Z can be H, R, a halide, CF.sub.3, or SiR.sub.3, where R can be an alkyl or aryl group. The two accompanying counter anions, in one embodiment, can be selected from the following Cl.sup.-, I.sup.-, PF.sub.6.sup.-, and CF.sub.3SO.sub.3.sup.-. In embodiments of the invention, water, such as tap water containing electrolyte or straight sea water can be subject to an electric potential of between 1.0 V and 1.4 V relative to the standard hydrogen electrode, which at pH 7 corresponds to an overpotential of 0.6 to 1.0 V, with the result being, among other things, the generation of hydrogen with an optimal turnover frequency of ca. 1.5 million mol H.sub.2/mol catalyst per h.
- Inventors:
- Issue Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1171094
- Patent Number(s):
- 8961776
- Application Number:
- 13/499,886
- Assignee:
- The Regents of the University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07F - ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- DOE Contract Number:
- AC02-05CH11231
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2010 Sep 10
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Long, Jeffrey R, Chang, Christopher J, and Karunadasa, Hemamala I. Molecular metal-Oxo catalysts for generating hydrogen from water. United States: N. p., 2015.
Web.
Long, Jeffrey R, Chang, Christopher J, & Karunadasa, Hemamala I. Molecular metal-Oxo catalysts for generating hydrogen from water. United States.
Long, Jeffrey R, Chang, Christopher J, and Karunadasa, Hemamala I. Tue .
"Molecular metal-Oxo catalysts for generating hydrogen from water". United States. https://www.osti.gov/servlets/purl/1171094.
@article{osti_1171094,
title = {Molecular metal-Oxo catalysts for generating hydrogen from water},
author = {Long, Jeffrey R and Chang, Christopher J and Karunadasa, Hemamala I},
abstractNote = {A composition of matter suitable for the generation of hydrogen from water is described, the positively charged cation of the composition having the general formula [(PY5W.sub.2)MO].sup.2+, wherein PY5W.sub.2 is (NC.sub.5XYZ)(NC.sub.5H.sub.4).sub.4C.sub.2W.sub.2, M is a transition metal, and W, X, Y, and Z can be H, R, a halide, CF.sub.3, or SiR.sub.3, where R can be an alkyl or aryl group. The two accompanying counter anions, in one embodiment, can be selected from the following Cl.sup.-, I.sup.-, PF.sub.6.sup.-, and CF.sub.3SO.sub.3.sup.-. In embodiments of the invention, water, such as tap water containing electrolyte or straight sea water can be subject to an electric potential of between 1.0 V and 1.4 V relative to the standard hydrogen electrode, which at pH 7 corresponds to an overpotential of 0.6 to 1.0 V, with the result being, among other things, the generation of hydrogen with an optimal turnover frequency of ca. 1.5 million mol H.sub.2/mol catalyst per h.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 24 00:00:00 EST 2015},
month = {Tue Feb 24 00:00:00 EST 2015}
}
Works referenced in this record:
Synthesis and Characterization of New d0 Tungsten and Molybdenum Imido Complexes with Heteroatomic Bifunctional O-N Chelate Ligands
journal, June 1994
- Takacs, Janos; Cavell, Ronald G.
- Inorganic Chemistry, Vol. 33, Issue 12