Patent ID: 6402156
Filing Date: 2002-06-11
Classification: B01D,B01J,C01B,C03C,C04B,H01M,Y02E,Y02P,Y10S

Abstract:
A sealant composition comprising a mixture by weight of about 40% to about 85% SiO2 and three or more metal oxides selected from the group aluminum oxide, cobalt oxide, sodium oxide, boron oxide, calcium oxide, magnesium oxide, zinc oxide, titanium oxide, lithium oxide, potassium oxide, phosphorous oxide and zirconium oxide combined with 0.5% to about 80% by weight of a ceramic membrane material wherein the ceramic membrane material is an ionic or electronic conductor material of the formula:AxAâ€²xâ€²ByBâ€²yâ€²O5+z where: A is a lanthanide metal which includes: the lanthanides and yttriun, e.g., La, Ce,Pr, Nd, Pm, Sm, Eu, Gd, Th, Dy, Ho, Rr, Tm, Yb, Lu and Yt, or mixtures thereof; Aâ€² is a Group 2b element of the Periodic Table; B is an element selected from the group consisting of Al, Ga, In, or mixtures thereof; and Bâ€² is a d block transition metal, Mg, or mixture of such elements; y,yâ€², x and xâ€²0; x+xâ€²=2 y+yâ€²=2 and z is a number that makes the material charge neutral.