Abstract: Aluminum titanate precursor batch compositions comprising a recycled aluminum titanate component, at least a portion of the recycled aluminum titanate component being comprised of a recycled pre-reacted aluminum titanate composition or alternatively of an un-reacted green aluminum titanate precursor composition, and methods for producing aluminum titanate ceramic articles utilizing the inventive batch compositions.

Abstract: Disclosed are compositions for applying to honeycomb bodies. The compositions can be used as plugging mixtures for forming a ceramic wall flow filter. Alternatively, the compositions can be used to form skin coatings on exterior portions of a honeycomb body. The disclosed compositions include an inorganic powder batch composition, an organic binder, a liquid vehicle, and a rheology modifier. The compositions exhibit improved rheological properties, including an increased yield strength and reduced viscosity under shear, which, among various embodiments, can enable the manufacture of sintered phase end plugs having reduced levels of dimple and pinhole formations in the final dried and fired end plugs as well as end plugs having relatively uniform and desired depths. Also disclosed are methods for forming end plugged ceramic wall flow filters from the plugging mixtures disclosed herein.

Abstract: Flow-through substrates, such as honeycombs, comprising certain zeolites. The flow-through substrates may be used, for example, in the removal of a heavy metal from a fluid such as a gas stream.

Abstract: Flow-through substrates, such as honeycombs, comprising certain zeolites. The flow-through substrates may be used, for example, in the removal of a heavy metal from a fluid such as a gas stream.

Abstract: A ceramic forming batch mixture including inorganic batch materials, such as sources of alumina, titania, and silica, a pore former combination including first and second pore formers with different compositions; an organic binder; and a solvent. Also disclosed is a method for producing a ceramic article involving mixing the inorganic batch materials with the pore former combination having first and second pore formers of different composition, adding an organic binder and a solvent, forming a green body; and firing the green body. A green body having a combination of first and second pore formers with different compositions is disclosed, as are several methods for firing to produce ceramic articles such as aluminum titanate.

Abstract: A ceramic forming batch mixture including inorganic batch materials, such as sources of alumina, titania, and silica, a pore former combination including first and second pore formers with different compositions; an organic binder; and a solvent. Also disclosed is a method for producing a ceramic article involving mixing the inorganic batch materials with the pore former combination having first and second pore formers of different composition, adding an organic binder and a solvent, forming a green body; and firing the green body. A green body having a combination of first and second pore formers with different compositions is disclosed, as are several methods for firing to produce ceramic articles such as aluminum titanate.

Abstract: A ceramic forming batch mixture including inorganic batch materials, such as sources of alumina, titania, and silica, a low amount of one or more pore formers including at least one starch; an organic binder; and a solvent. Also disclosed is a method for producing a ceramic article involving mixing the inorganic batch materials with the low amount of pore former, adding an organic binder and a solvent, forming a green body; and firing the green body. A green body having a low amount of the one or more pore formers including starch is disclosed.

Abstract: A method for passivating a porous ceramic article containing microcracks including filling the microcracks with a liquid, such as water, and then applying a washcoat as described herein.

Abstract: Assemblies comprised of mounted flow-through substrates and methods for using and making said assemblies.

Abstract: Trace cross-contamination in mixtures or preforms of plasticized ceramic-forming powder mixtures, arising for example in manufacturing facilities where components of one ceramic product being manufactured can contaminate mixtures for another product to be manufactured, are controlled by one or more of: the targeted decontamination of shared production lines, rapid trace analysis of the mixtures to establish the presence and/or concentration levels of contaminants, the application of statistical models to project final product properties based on the analyzed concentrations, and decisional analysis of appropriate corrective actions based on the statistical projections.

Abstract: A method is provided for marking a structure containing an ceramic-forming component by applying onto a green body a high temperature ink that has a metal-containing species and a metal complexing agent, wherein the metal in the metal-containing species reacts with the ceramic-forming component during firing of the green body to produce a compound that forms a contrasting mark on the resulting ceramic structure. A method is also provided for marking a ceramic-forming green body by applying a two-dimensional dot matrix mark formed of a high temperature ink onto a surface of the ceramic-forming green body, wherein each dot of the two-dimensional dot matrix is formed of a single drop of the high temperature ink.

Abstract: A method is disclosed for manufacturing a ceramic article that includes mixing at least one ceramic precursor inorganic ingredient, and at least one binder to form a plasticized mixture, wherein the binder includes a proteinous material. The mixture is extruded to form a green body. The green body can be heated to form the ceramic article.

Abstract: A method for passivating a porous ceramic article containing microcracks including filling the microcracks with a liquid, such as water, and then applying a washcoat as described herein.

Abstract: Disclosed are compositions for applying to honeycomb bodies. The compositions can be used as plugging mixtures for forming a ceramic wall flow filter. Alternatively, the compositions can be used to form skin coatings on exterior portions of a honeycomb body. The disclosed compositions include an inorganic powder batch composition, an organic binder, a liquid vehicle, and a rheology modifier. The compositions exhibit improved rheological properties, including an increased yield strength and reduced viscosity under shear, which, among various embodiments, can enable the manufacture of sintered phase end plugs having reduced levels of dimple and pinhole formations in the final dried and fired end plugs as well as end plugs having relatively uniform and desired depths. Also disclosed are methods for forming end plugged ceramic wall flow filters from the plugging mixtures disclosed herein.

Abstract: A ceramic forming batch mixture including inorganic batch materials, such as sources of alumina, titania, and silica, a low amount of one or more pore formers including at least one starch; an organic binder; and a solvent. Also disclosed is a method for producing a ceramic article involving mixing the inorganic batch materials with the low amount of pore former, adding an organic binder and a solvent, forming a green body; and firing the green body. A green body having a low amount of the one or more pore formers including starch is disclosed.

Abstract: Aluminum titanate precursor batch compositions comprising a recycled aluminum titanate component, at least a portion of the recycled aluminum titanate component being comprised of a recycled pre-reacted aluminum titanate composition or alternatively of an un-reacted green aluminum titanate precursor composition, and methods for producing aluminum titanate ceramic articles utilizing the inventive batch compositions.