Patent ID: 8551910

Claim:
A porous structure, comprising: a ceramic material comprising a pseudobrookite oxide phase comprising titanium, aluminum, magnesium, and zirconium in proportions such that the pseudobrookite oxide phase is represented by a formula: (Al 2 TiO 5 ) x (MgTi 2 O 5 ) y (MgTiZrO 5 ) z , said material comprising, in mol % based only on oxides Al 2 O 3 , TiO 2 , MgO, and ZrO 2 : 90<2 a+ 3 m< 110; 100+ a< 3 t< 210 −a; and a+t+m+zr= 100, wherein: a is a molar content of Al 2 O 3 ; t is a molar content of TiO 2 ; m is a molar content of MgO; and zr is a molar content of ZrO 2 ; x is between 0.45 and 0.94; y is between 0.05 and 0.50; z is between 0.005 and 0.06; and x+y+z= 1.