Lawrence Berkeley National Laboratory
Molecular metal-Oxo catalysts for generating hydrogen from water
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 [(PY5W2)MO]2+, wherein PY5W2 is (NC5XYZ)(NC5H4)4C2W2, M is a transition metal, and W, X, Y, and Z can be H, R, a halide, CF3, or SiR3, where R can be an alkyl or aryl group. The two accompanying counter anions, in one embodiment, can be selected from the following Cl−, I−, PF6−, and CF3SO3−. 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 H2/mol catalyst per h.
The Regents of the University of California
C
C07F
inventional
Hemamala I. Christopher J. Jeffrey R.
Karunadasa Chang Long