Integration of catalytic nanostructured platinum and palladium within 3D microscale structures or fluidic environments is important for systems ranging from micropumps to microfluidic chemical reactors and energy converters. We report a straightforward procedure to fabricate microscale patterns of nanocrystalline platinum and palladium using multiphoton lithography. These materials display exce...

Traditional analysis of reactions catalyzed by supported metals involves the structure of the metallic particles. However, we report here that for the class of nanostructured gold- or platinum-cerium oxide catalysts, which are active for the water-gas shift reaction, metal nanoparticles do not participate in the reaction. Nonmetallic gold or platinum species strongly associated with surface cer...

The use of different vanadium sources in the synthesis multi-metal MoVTeNb oxide catalysts has been investigated for their effect on physicochemical properties catalysts. Metal oxides were synthesized by slurry method assisted with a microwave irradiation. Vanadium pentoxide (V2O5), vanadyl sulphate (VOSO4) and ammonium metavanadate (NH4VO3) used as sources, respectively. X-ray diffraction (XRD...

This study presents information about crystal imperfections in the main phase of industrial vanadium phosphorous oxide catalysts that are used to catalyze oxidation n-butane maleic anhydride, being an important intermediate chemical industry. The mechanism this reaction is still debated, and catalytically active selective surface centers have not yet been identified. results presented based on ...

The vanadium bromoperoxidase enzymes (VBPO) are receiving considerable interest since they show increased stability over the more commonly used heme chloroperoxidase enzymes. The multisubunit vanadium enzymes described in this article are exceptionally stable and offer the potential to be exploited for industrial catalysts. The multisubunit enzyme from Corallina officinalis was first crystallis...