摘要:
In one embodiment, a gas sensor element comprises: an electrolyte disposed between and in ionic communication with a first electrode and a second electrode; and a protective layer disposed adjacent to the first electrode. The protective layer comprises a catalytic coating comprising a reducible support material, a catalyst, and a water activator material. The catalyst coating is capable of converting an oxygen consuming species in a gas to an oxygen donating species.
摘要:
In one embodiment, an exhaust treatment device includes: a substrate, a shell disposed around the substrate, and a retention material disposed between the shell and the substrate. The substrate includes a catalyst that includes a precious metal and a solid solution comprising solid solution metals, wherein the solid solution metals include yttrium, zirconium, and titanium.
摘要:
An exhaust treatment device comprises a shell; a substrate disposed within the shell, the substrate having a catalyst disposed thereon, wherein the catalyst comprises platinum and a protective layer selected from the group consisting of tin oxide, iron oxide, and manganese oxide, and wherein the catalyst is capable of oxidizing greater than or equal to 50 wt. % carbon monoxide present in an exhaust gas stream at temperatures of about 150° C. to about 200° C.
摘要:
A NOx abatement system comprising: a first NOx adsorber (18) capable of being disposed in-line and downstream of and in fluid communication with an engine (12); a selective catalytic reduction catalyst (20) disposed in-line and downstream of and in direct fluid communication with the first NOx adsorber (18), wherein the selective catalytic reduction catalyst (20) is capable of storing ammonia; and an off-line reformer (24) disposed in selective communication with and upstream of the first NOx adsorber (18) and the selective catalytic reduction catalyst (20), wherein the reformer (24) is capable of producing a reformate comprising primarily hydrogen and carbon monoxide.
摘要:
In one embodiment, the exhaust manifold can comprise: an exhaust conduit having an inner surface, and an aluminide layer disposed on at least a portion of the inner surface of the manifold. In one embodiment, the method for making the exhaust manifold can comprise oxidizing aluminum on an inner surface of the manifold to form the aluminide layer.
摘要:
An exhaust emission control system can include a reformer a fuel source disposed upstream of and in fluid communication with the reformer, and a NOx adsorber disposed downstream of and in fluid communication with the reformer. The NOx adsorber can include a NOx adsorber catalyst having an acid adsorber disposed on the substrate and a base adsorber disposed over the acid adsorber.
摘要:
In a solid-oxide fuel cell assembly comprising a plurality of components having electrically-conductive mating surfaces therebetween, the surfaces are sealed by an electrically insulating gasket that include a mineral composition comprising about 66 mol % MgO and about 33 mol % SiO2, the mineral composition being known mineralogically as forsterite. A brazing alloy may be applied to enhance bonding of the gasket into place. The gasket composition may include additions of Al2O3 to enhance electrical resistivity while having little to no impact of matching expansion coefficients of the gasket and metal mating surfaces. Also, additions such as titania or zirconia to inhibit glassy phase grain boundaries and the formation of impurities and pores in the ceramic grain boundaries may be used. A recommended particle size distribution of precursor powders is disclosed that leads to an optimum microstructure of the sintered gasket.
摘要:
A method for manufacturing a planar sensor, comprises disposing a film of a material on a substrate, wherein the material is selected from the group consisting of platinum, rhodium, palladium and mixtures and alloys comprising at least one of the foregoing materials; annealing the material; measuring a resistance value of the material; laser trimming the annealed material; heat treating the laser trimmed material; and laser trimming the heat treated material to form the sensor.
摘要:
A planar temperature sensing element is provided with first and second layers disposed over the temperature-sensing device. The second layer comprises an inorganic binder, a first ceramic material, and a second ceramic material. The inorganic binder is selected from the group consisting of M3+ phosphates, M4+ phosphates, M3+ nitrates, M4+ nitrates, and combinations comprising at least one of the foregoing. The first ceramic material is selected from the group consisting of aluminosilicate, M3+ aluminates, M4+ aluminates, M3+ hexaluminates, M4+ hexaluminates, and combinations comprising at least one of the foregoing. The second ceramic material comprises a phosphate-containing material.
摘要:
In one embodiment, an exhaust manifold can comprise: an exhaust conduit and a catalyst portion disposed within at least a portion of the exhaust conduit. The catalyst portion can comprise a metallic substrate, an aluminide layer disposed on at least a portion of the metallic substrate, and a catalyst material disposed on the aluminide. The catalyst material can be selected from the group consisting of platinum, palladium, ruthenium, rhodium, and combinations comprising at least one of the foregoing catalyst materials.