Ozone-activated nanoporous gold and methods of its use
AssigneesPresident and Fellows of Harvard College, Lawrence Livermore National Security, LLC
InventorsCynthia M. Friend, Robert J. Madix, Branko Zugic, Lucun Wang, Michelle L. Personick, Juergen Biener, Monika Margarete Biener
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Abstract
The invention relates to nanoporous gold nanoparticle catalysts formed by exposure of nanoporous gold to ozone at elevated temperatures, as well as methods for production of esters and other compounds.
Claims8
A nanoporous gold catalyst produced by a method comprising the steps of:
- providing nanoporous gold comprising 0.1 to 10% silver by atom;
- and
- contacting the nanoporous gold with ozone at a temperature of 100° C. or greater for a time sufficient to form the activated nanoporous gold catalyst.
A nanoporous gold catalyst comprising from 0.1 to 10% silver by atom, wherein the catalyst is treated with ozone at a temperature of 100° C.-185° C., or wherein the catalyst is active for selective oxidation of alcohols and inactive for oxidation of CO, or wherein at least 80% of the surface silver is oxidized and at least 60% of the surface gold is oxidized.
Dependencies are inferred from the claim text.