US 6,982,073 B2
Process for making nano-sized stabilized zirconia
Bruce J. Sabacky, Reno, Nev. (US); and Timothy M. Spitler, Fernley, Nev. (US)
Assigned to Altair Nanomaterials Inc., Reno, Nev. (US)
Filed on Nov. 02, 2001, as Appl. No. 10/53,177.
Prior Publication US 2003/0086865 A1, May 08, 2003
Int. Cl. C01G 25/02 (2006.01)
U.S. Cl. 423—608 14 Claims
 
1. A process for producing nano-sized stabilized zirconium dioxide that comprises:
a. providing an aqueous solution that includes a zirconium salt and a stabilizing agent:
b. hydrolyzing the solution to form an intermediate and hydrochloric acid and to remove water, wherein the hydrolyzing is conducted in a controlled temperature, substantially total evaporation process at a temperature higher than the boiling point of the solution but lower than the temperature where there is significant crystal growth; and,
c. calcining the intermediate to form nano-sized agglomerates.