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Method for making fine and ultrafine spherical particles of zirconium titanate and other mixed metal oxide systems

  • US 20050014850A1
  • Filed: 07/18/2003
  • Published: 01/20/2005
  • Est. Priority Date: 07/18/2003
  • Status: Active Grant
First Claim
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1. A method for making amorphous spherical particles of zirconium titanate having tailored intraparticle nanostructures comprising the steps of:

  • a) preparing an aqueous solution of a zirconium salt;

    b) preparing an aqueous solution of a titanium salt;

    c) mixing said solution of zirconium salt with said solution of titanium salt into a mixed salt solution wherein said mixed salt solution has about equal moles of zirconium and titanium and wherein said mixed salt solution has a total salt concentration in the range from 0.01 M to about 0.5 M;

    d) adding a stearic dispersant and an organic solvent to said mixed salt solution, subjecting said zirconium salt and said titanium salt in said mixed salt solution to a coprecipitation reaction to form a liquid solution containing amorphous spherical particles of zirconium titanate having tailored intraparticle nanostructures wherein the volume ratio of said organic solvent to aqueous part is in the range from 1 to 5.

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