Cristal USA, Inc.

Tronox LLC

Charles B Muehlberger

Mark Barrett Watson

Guoyi Fu

A process for making a catalyst having precious metal nanoparticles deposited on a support includes first providing an aqueous dispersion of support particles. A pre-treatment slurry is prepared by mixing the aqueous dispersion of support particles with a water-soluble precious metal precursor and a reducing agent. The pre-treatment slurry is hydrothermally treated at a temperature in the range of from about 40&#xb0; C. to about 220&#xb0; C. for a time sufficient to deposit precious metal nanoparticles on the surface of the support particles, the precious metal nanoparticles having an average particle size less about 50 nm.

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Baltimore, MD, United States of America

Charles B Muehlberger