TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: (I) further comprises a precious metal or a metal supported by the tetragonal zirconia. (I) or the metal precursor comprises a precious metal (preferably platinum, silver, palladium, rhodium, gold, iridium, rhenium and/or osmium, or their alloys), a metal (preferably cobalt, nickel, iron, copper, scandium, aluminum, neodymium, ytterbium, samarium, chromium and/or gadolinium; or cerium, calcium, magnesium, yttrium and/or lanthanum) or a metal nitrate, a metal acetate, a metal alkoxide and/or a metal hydroxide. (I) comprises the precious metal at 0.1-10 (preferably 0.3-0.5) wt.%. (I) comprises cobalt, nickel, iron, copper, scandium, aluminum, neodymium, ytterbium, samarium, chromium and/or gadolinium, at 1-50 (preferably 1-20) wt.%. (I) comprises cerium, calcium, magnesium, yttrium and/or lanthanum, at 1-50 (preferably 5-20) wt.%. The final zirconia product or (I) comprises many zirconia crystallites or precious metal crystallites having an average crystal size of 1-10 (preferably 1-3) nm. (I) or the final zirconia product comprises the additive at less than about 50 (preferably less than about 10) wt.%.Preferred Process: The first precipitant is subjected in the solution (which has a pH of 8-14) for at least 7 hours. The process further comprises: adding a metal precursor to the digested slurry or its portion, after the step of subjecting the first precipitant in a solution, and before the step of spray drying the digested slurry; adding a morphology enhancing agent to the solution during or after the step of subjecting the first precipitant in a solution; adding an additive to the solution, after the step of subjecting the first precipitant in a solution, and before the step of spray drying the digested slurry; converting the final zirconia product to a derivative product (a pellet, an extrudate, a monolith, a thin film or a coating layer); adding water to the final zirconia product to form a second slurry, adding a metal precursor solution comprising a metal precursor to the slurry to form a metal-containing slurry, drying to form a dry zirconia composition supporting a metal, and calcining the composition to form a final zirconia composition supporting the metal; or adding water to the final zirconia product to form a second slurry, adding an additive to the slurry to form an additive-containing slurry, drying to form a dry zirconia composition supporting the additive, and calcining the composition to form a final zirconia composition supporting the additive; fabricating a supporting anode comprising the final zirconia product. The step of spray drying the digested slurry and step of calcining the dry amorphous zirconia occur simultaneously through spray pyrolysis. The step of drying the metal-containing slurry comprises spray drying the metal-containing slurry. The step of drying the metal-containing slurry and the step of calcining the dry zirconia composition occur simultaneously through spray pyrolysis.Preferred Components: The zirconium precursor is zirconyl nitrate (ZrO(NO3)2), zirconium n-propoxide (Zr(OC3H7)4), zirconium nitrate (Zr(NO3)4), zirconium acetate (ZrC2H4O2), zirconium carbonate (ZrOCO3) and/or Zrx(NH3)xCH2O3, or their solutions. The zirconium precursor comprises less than about 0.01 weight percent chlorine, based on the total weight of the zirconium precursor. The precipitation agent is ammonium hydroxide, urea, sodium hydroxide and/or potassium hydroxide, or their solutions. The first precipitant comprises zirconyl hydroxide (ZrOx(OH)y). The final zirconia product has a surface area greater than about 50 (preferably greater than about 150) m2/g. The zirconium precursor or the precipitation agent comprises a surfactant, which comprises polyethylene oxide, a linear alcohol and/or Tween 80 (RTM: Polysorbate), or their solutions. The morphology enhancing agent is urea, acetic acid, lactic acid, glycine, alcohols, ammonium nitrate, polymers, polyvinylalcohol or carbohydrazide. The additive comprises a suspension comprising alumina, silica, ceria and/or calcium oxide. The first precipitant has an average crystal size of 5-50 (preferably 10-35) nm. The final zirconia product has an average particle size of less than about 40 (preferably less than about 10) microns. The final zirconia product has a substantially spherical morphology. The supporting anode comprises nickel supported on the final zirconia product. EXAMPLE - Zirconyl nitrate (55 g) was dissolved in deionized water (454 ml) to obtain solution (A). Solution (B) was prepared by mixing deionized water (100 ml) and 30 wt.% ammonium hydroxide (100 ml). Solution (A) was added dropwise into solution (B) under vigorous stirring to form a first precipitant. The pH was found to decrease from 12 to about 9.8 at the end of precipitation. Solution (C) containing the first precipitant and zirconia hydroxide, was then digested at 96degreesC for 192 hours to form a high surface area amorphous zirconia. Additional 30 wt.% ammonium hydroxide was added throughout digestion at a rate of 1.56 ml/hour to maintain the pH at about 9.8. The digested sample (digested slurry) was then vacuum filtered and dried overnight in a vacuum oven at 100degreesC. The prepared powder batch included amorphous zirconium oxide (ZrO2). The amorphous ZrO2 was heat treated in a furnace at 1degreesC/minute from room temperature to 500degreesC, 600degreesC, 700degreesC, 800degreesC, 900degreesC or 1000degreesC to form the high surface area amorphous zirconia composition (20 g).