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US 11,833,488 B2Granted
Highly active thermally stable nanoporous gold catalyst
AssigneeLawrence Livermore National Security, LLC
InventorsJuergen Biener, Arne Wittstock, Monika M. Biener, Michael Bagge-Hansen, Marcus Baeumer, Andre Wichmann, Bjoern Neuman
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Abstract
In one embodiment, a product includes a nanoporous gold structure comprising a plurality of ligaments, and a plurality of oxide particles deposited on the nanoporous gold structure; the oxide particles are characterized by a crystalline phase.
Claims19
A product, comprising:
- a nanoporous gold structure comprising a plurality of ligaments;
- and
- a plurality of oxide particles in a conformal layer covering the ligaments of the nanoporous gold structure throughout nanopores of the nanoporous gold structure,
- wherein the oxide particles include a metal oxide selected from a group consisting of:
- a titanium oxide, a cerium oxide, a praseodymium oxide, and precursors thereof,
- wherein the conformal layer surrounds the ligaments and has about a uniform thickness throughout the nanoporous gold structure,
- wherein the oxide particles are characterized by a crystalline phase.
4 more elements
A product, comprising:
- a nanoporous gold structure comprising a plurality of ligaments;
- and
- a plurality of oxide particles in a conformal layer covering the ligaments of the nanoporous gold structure throughout nanopores of the nanoporous gold structure,
- wherein the conformal layer surrounds the ligaments and has about a uniform thickness throughout the nanoporous gold structure,
- wherein the oxide particles are characterized by a crystalline phase,
- wherein the oxide particles comprise one or more metal oxides selected from a group consisting of:
- a titanium oxide characterized by a predominantly anatase crystalline phase;
- a cerium oxide characterized by a predominantly fluoride crystalline phase having oxygen vacancies;
- a praseodymium oxide characterized by a predominantly fluoride crystalline phase having oxygen vacancies;
- and an iron oxide characterized by a predominantly hematite crystalline phase.
7 more elements
A product, comprising:
- a nanoporous gold structure comprising a plurality of ligaments;
- and
- a plurality of oxide particles deposited on the nanoporous gold structure,
- wherein the oxide particles include a metal oxide selected from a group consisting of:
- a titanium oxide, a cerium oxide, a praseodymium oxide, and precursors thereof,
- wherein the oxide particles are characterized by a crystalline phase,
- wherein the plurality of oxide particles have physical characteristics of being:
- in the form of a conformal, continuous layer extending throughout the nanoporous gold structure and surrounding the ligaments on all sides thereof;
- and
- incubated at a selected temperature for a period of time sufficient to cause the oxide particles to have primarily a predetermined crystalline phase.
7 more elements
Dependencies are inferred from the claim text.