Patent ID: 6365123
Filing Date: 2002-04-02
Classification: B01D,B01J,C01G,C01P

Abstract:
A metal-zirconium oxide material made by sol-gel techniques from alkoxides including heterometallic alkoxide comprising:(I) at least one heterometallic alkoxide selected from the group consisting of: (a) alkali metal-zirconium alkoxides having the general chemical formulas: M[Zr(OR)5], M[Zr2(OR)9], or M2[Zr3(OR)14], where M is an alkali metal; and (b) alkaline earth metal-zirconium alkoxides having the general chemical formulas: Mâ€²[Zr2(OR)9]2, or Mâ€²[Zr3(OR)14], where Mâ€² is an alkaline earth metal; (II) lanthanide-zirconium alkoxides selected from the group consisting of: Ln[Zr2(OR)9]2, where Ln is a lanthanide; wherein the metal-zirconium oxide material comprises zirconium oxide in the range of 40-87 wt. %; alkali metal oxide and alkaline earth metal oxide in the range of 3-30 wt. %; and lanthanum oxide in the range of 10-30 wt. %; wherein M and Mâ€² are uniformly distributed; and wherein the zirconium oxide, alkali metal oxide, alkaline earth metal oxide and lanthanum oxide are joined by chemical bonds to one another.