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US 12,384,729 B2Granted
Inorganic membrane filtration articles and methods thereof
AssigneeCorning Incorporated
InventorsCurtis Robert Fekety, Yunfeng Gu, Yanxia Ann Lu, Zhen Song
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Abstract
An inorganic membrane filtration article and methods for making the same. The membrane filtration article includes a sintered flow-through ceramic honeycomb with a plurality of partition walls defining a plurality of open channels from an inlet end of the honeycomb to an outlet end of the honeycomb. The honeycomb is formed from a cordierite composition with low-sodium and/or low-potassium content for enhanced filtration performance.
Claims25
A method of making a ceramic article, the method comprising:
- forming a green membrane layer by applying a first composition onto at least a portion of partition walls of a honeycomb body, wherein the partition walls of the honeycomb body are formed from a second composition, the first composition comprises:
- Al2O3, SiO2, MgO, and a sodium content in the form of Na2O from 0.01 wt. % to 0.07 wt % Na2O, and the sodium content in the first composition is lower than a sodium content in the second composition of the honeycomb body;
- and
- firing the green membrane layer on the honeycomb body walls to form a porous membrane layer comprising cordierite.
1 more element
Dependencies are inferred from the claim text.