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US 7,964,262 B2Granted
Layered silicate modified cordierite and method
AssigneeCorning Incorporated
InventorsYves Andre Henri Brocheton, Dilip Kumar Chatterjee, Michele Fredholm, Gregory Albert Merkel, Steven Bolaji Ogunwumi
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Abstract
The disclosure provides a composition including a porous cordierite honeycomb body as defined herein having excellent strength, high thermal shock resistance, and reduced microcrack properties. The disclosure also provides methods of making and using the composition, for example, as a catalyst carrier.
Claims9
A cordierite honeycomb body comprising:
- a wt % (M2O+CaO) of not less than about 0.40%;
- a MOR/CFA ratio (psi) of at least about 3,500-40(%porosity);
- a porosity of at least 45%;
- a TSP of at least 500° C.;
- and wherein the porosity has a pore size distribution characterized by a value of (d50−d10)/d50 of ≦0.45,
- where “wt % (M2O+CaO)” is the quantity (wt % Li2O+wt % Na2O+wt % K2O+wt % CaO+wt % Rb2O+wt % Cs2O), TSP is the thermal shock parameter defined as (MOR/E)25°C.(CTE500-900°C.)−1, MOR is the four-point modulus of rupture, E is the elastic modulus, CTE is the coefficient of thermal expansion, CFA is the closed frontal area, and the terms d10 and d50 denote the pore diameters, in micrometers, at which about 10% and about 50%, respectively, of the total pore volume are of a finer pore diameter.
3 more elements
Dependencies are inferred from the claim text.