Abstract: A catalytic combustor (28) includes a plurality of concentric tubular pressure boundary elements (46). The pressure boundary elements are arranged to form a first annular space (e.g., 50) conducting a first fluid flow (e.g., 60) and a second annular space (e.g. 49), separate from the first annular space, conducting a second fluid flow (e.g., 58). A catalytic material (32) is disposed on a surface (e.g., 64) of at least one of the pressure boundary elements and exposed to at least one of the fluid flows.

Abstract: A catalytic combustor (14) includes a first catalytic stage (30), a second catalytic stage (40), and an oxidation completion stage (49). The first catalytic stage receives an oxidizer (e.g., 20) and a fuel (26) and discharges a partially oxidized fuel/oxidizer mixture (36). The second catalytic stage receives the partially oxidized fuel/oxidizer mixture and further oxidizes the mixture. The second catalytic stage may include a passageway (47) for conducting a bypass portion (46) of the mixture past a catalyst (e.g., 41) disposed therein. The second catalytic stage may have an outlet temperature elevated sufficiently to complete oxidation of the mixture without using a separate ignition source. The oxidation completion stage is disposed downstream of the second catalytic stage and may recombine the bypass portion with a catalyst exposed portion (48) of the mixture and complete oxidation of the mixture.

Abstract: A coated article (e.g., 244) and a method for preparing a coating (e.g., 400) for a metallic substrate (402) are described. In one embodiment, the method includes preparing a ceramic powder comprising particles of a ceramic material (404) doped with a catalyst species (406). The method also includes adding metal particles (408) and the ceramic powder to a fluid to form a fluid suspension effective to maintain the catalyst species dispersed therein, and then applying the fluid suspension to the metallic substrate to form the coating thereon. In another embodiment, an aqueous suspension of undoped ceramic particles (316) may be combined with a fluid suspension of metallic particles to form the coating.

Abstract: A catalytic combustor for a combustion turbine that employs a protective nickel aluminide diffusion barrier on its inside and outside surfaces with a porous alumina, zirconia, titania, and/or ceria, and bond phase coating on the outside surface in which a catalyst is contained.

Abstract: A high temperature hydrogen gas separation membrane employing a physically interlocking barrier layer to form a spinel or intermetallic architecture bonding the metal barrier layer onto the surface of a fibrous metal medial structural support substrate. A tantalum/niobium interface layer is deposited on the barrier layer. The final layer is a precious metal such as palladium, which is deposited on the tantalum/niobium interface layer.

Abstract: A lubricating composition of about 90 to about 99% by weight of a lubricant and about 1 to about 5% by weight of an organometallic phthalocynaine, preferably a polymeric organometallic phthalocyanine complex, including nitrogen-substituted analogues thereof, where the complexed metal ion is preferably a Group IVA metal and provides increased time of machine operation to failure by improving oil lubricated bearing performance. Phthalocynanine peripheral ring substituents and attached to the phthalocyanine increase solubility in aqueous and organic lubricants.

Abstract: A lubricating composition of about 90 to about 99% by weight of a lubricant and about 1 to about 5% by weight of a polymeric organometallic phthalocyanine complex, including nitrogen-substituted analogues thereof, where the complexed metal ion is preferably a Group IVA metal and provides increased time of machine operation to failure by improving grease or oil lubricated bearing performance. The phthalocyanine is doped with an electrically conductive dopant to bleed internal charge build up from the internals of turbines and large drive motors.

Abstract: Disclosed is a lubricating grease composition of about 90 to about 99% by weight of a lubricant and about 1 to about 5% by weight of polymeric organometallic phthalocyanine complex, including nitrogen-substituted analogues thereof, where the complexed metal ion is a Group IVA metal. The lubricating composition is used in ball and roller bearings, especially at high speeds and high temperatures.