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US 8,709,126 B1Granted
Generation of metal and alloy micron, submicron, or nano particles in simple, rapid process
AssigneeStc.Unm
InventorsClaudia Catalina Luhrs, Zayd Leseman, Jonathan Phillips, Hugo Ricardo Zea-Ramirez
Life of this patent
Estimating the term…
Abstract
Various embodiments provide methods of forming metallic particles or carbon/graphite coated metallic particles with zero-valence from metal precursor compounds by a reductive/expansion synthesis method using nitrogen-hydrogen containing molecules.
Claims20
A method of forming a metallic particle comprising:
- mixing one or more metal precursor compounds and a chemical agent that produces reducing gases upon thermal decomposition to form a physical mixture, wherein the one or more metal precursor compounds comprise one or more metals having a positive valence;
- and
- heating the physical mixture in an inert atmosphere to a temperature ranging from 300° C. to 900° C., to form a plurality of metallic particles each comprising one or more metals corresponding to the one or more metal precursor compounds,
- wherein the chemical reducing agent is urea and the one or more metal precursor compounds comprise nitrates or hydrated nitrates of a metal selected from Fe, Ni and a combination thereof.
1 more element
A method of forming a metallic particle comprising:
- mixing one or more metal precursor compounds and a chemical agent that produces reducing gases upon thermal decomposition to form a physical mixture, wherein the one or more metal precursor compounds comprise one or more metals having a positive valence;
- and
- heating the physical mixture in an inert atmosphere to form a plurality of metallic particles each comprising one or more metals corresponding to the one or more metal precursor compounds, wherein each metallic particle of the plurality of metallic particles comprises a carbonaceous shell comprising carbon or graphite surrounding the metallic particle,
- wherein the chemical agent that produces reducing gases upon thermal decomposition comprises one or more nitrogen-hydrogen-containing molecules.
1 more element
A method of forming a metallic particle comprising:
- mixing one or more metal precursor compounds and a chemical agent that produces reducing gases upon thermal decomposition to form a physical mixture, wherein the one or more metal precursor compounds comprise one or more metals having a positive valence;
- and
- heating the physical mixture in an inert atmosphere to a temperature ranging from about 400° C. to about 1000° C., to form a plurality of metallic particles each comprising one or more metals corresponding to the one or more metal precursor compounds,
- wherein the chemical reducing agent is urea and the one or more metal precursor compounds comprise nitrates or hydrated nitrates of a metal selected from Fe, Ni and a combination thereof.
1 more element
Dependencies are inferred from the claim text.