Methods for producing platinum powders
AssigneeSuperior MicroPowders LLC
InventorsToivo T. Kodas, Mark J. Hampden-Smith, James Caruso, Daniel J. Skamser, Quint H. Powell, Clive D. Chandler
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Abstract
Platinum powders and methods for producing platinum powders. The powders preferably have a small particle size, narrow size distribution and a spherical morphology. The method includes forming the particles by a spray pyrolysis technique. The invention also includes novel devices and products formed from the platinum powders.
Claims53
A method for the production of platinum metal particles, comprising the steps of:
- a) generating an aerosol of droplets from a liquid wherein said liquid comprises a platinum metal precursor and wherein said droplets have a size distribution such that at least about 80 weight percent of said droplets have a size of from about 1 .mu.m to about 5 .mu.m;
- b) moving said droplets in a carrier gas;
- and
- c) heating said droplets to remove liquid therefrom and form platinum metal particles comprising at least about 50 weight percent platinum metal.
A method for the production of metal composite particles, comprising the steps of:
- a) forming a liquid solution comprising a platinum metal precursor and a non-metallic phase precursor;
- b) generating an aerosol of droplets from said liquid solution;
- c) moving said droplets in a carrier gas;
- d) heating said droplets to remove liquid therefrom and form metal composite particles comprising platinum metal and a non-metallic phase.
A method for the production of metal alloy particles, comprising the steps of:
- a) forming a liquid solution comprising a platinum metal precursor and a second metal precursor;
- b) generating an aerosol of droplets from said liquid solution;
- c) moving said droplets in a carrier gas;
- d) heating said droplets to remove liquid therefrom and form metal alloy particles comprising platinum metal and a second metal.
Dependencies are inferred from the claim text.