Patent ID: 6413895
Filing Date: 2002-07-02
Classification: B01D,C04B,F01N,Y10S,Y10T

Abstract:
A structure comprising predominately an NZP-type phase having the general formula RxZ4P6âˆ’ySiyO24, wherein 0&lE;x&lE;8, 0&lE;y&lE;6, R is selected from the group consisting of Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, Y, lanthanides, and combinations thereof, Z is selected from the group consisting of Zr, Ti, Nb, Ta, Y, lanthanides, and combinations thereof, and optionally a sintering additive, and having an open porosity of at least about 20% by volume as measured by mercury porosimetry, a median pore diameter in micrometers of equal to or greater than a value defined by the quantity [10âˆ’0.10(% open porosity)] as measured by mercury porosimetry, and a four-point modulus of rupture as measured on a solid rod of circular cross section of at least about 300 psi.