Cordierite aluminum magnesium titanate compositions and ceramic articles comprising same

A ceramic article, comprising:

• a honeycomb monolith structure having an inlet end and an outlet end, and a multiplicity of cells formed by porous walls extending from the inlet end to the outlet end, wherein the porous walls of the honeycomb monolith structure further comprise:
• at least about 50 wt % of a pseudobrookite phase comprising predominately alumina, magnesia, and titania and including 15 wt % to 35 wt % of MgTiO5;
• a second phase comprising cordierite;
• a third phase comprising mullite, and
• wherein the porous walls of the honeycomb monolith structure comprise a composition, as expressed in weight percent on an oxide basis, of from 4% to 10% MgO;
• from 40% to 55% Al2O3;
• from 25% to 44% TiO2;
• and from 5% to 25% SiO2, and
• wherein the honeycomb monolith structure further comprises:
• a coefficient of thermal expansion, as measured between 25° C.-1000° C., of less than or equal to 14×10−7/° C.;
• total porosity % P of at least 40% by volume;
• median pore diameter d50 of at least 10 μm;
• and
• df that does not exceed 0.50.