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Wet chemical and plasma methods of forming stable PTPD catalysts

  • US 9,433,938 B2
  • Filed: 11/19/2015
  • Issued: 09/06/2016
  • Est. Priority Date: 02/23/2011
  • Status: Expired due to Fees
First Claim
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1. A method of forming nano-particles, the method comprising:

  • forming a plurality of aluminum-palladium carrier nano-particles using a plasma gun, wherein the aluminum-palladium carrier nano-particles comprise an interior region and an exterior surface, the interior region comprising a mixed-metal oxide that includes aluminum oxide and palladium, and the exterior surface comprising pure metallic palladium; and

    affixing platinum nano-particles to the pure metallic palladium on the aluminum-palladium carrier nano-particles using a wet chemistry process;

    wherein forming the plurality of aluminum-palladium carrier nano-particles using the plasma gun comprises;

    loading a quantity of aluminum oxide material and a quantity of palladium material into the plasma gun in a desired ratio, wherein the aluminum oxide material and the palladium material are in powder form;

    vaporizing the quantity of aluminum oxide material and the quantity of palladium material using the plasma gun, thereby forming a vapor cloud comprising vaporized aluminum oxide and vaporized palladium; and

    quenching the vapor cloud, thereby condensing the vaporized aluminum oxide and the vaporized palladium into carrier nano-particles.

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