Active and Stable Embedded Au@CeO2 Catalysts for Preferential Oxidation of CO

Competition of CO and H2 for Active Oxygen Species during the Preferential CO Oxidation (PROX) on Au/TiO2 Catalysts

Aiming at an improved mechanistic understanding of the preferential oxidation of CO on supported Au catalysts, we have investigated the competition between CO and H2 for stable, active oxygen (Oact) species on a Au/TiO2 catalyst during the simultaneous exposure to CO and H2 with various CO/H2 ratios at 80 ̋C and 400 ̋C by quantitative temporal analysis of products (TAP) reactor measurements. It...

Low-content gold-ceria catalysts for the water–gas shift and preferential CO oxidation reactions

Low-content (<0.6 at.%) gold-ceria samples were prepared by one-pot synthesis by the urea gelation/co-precipitation method, and by sodium cyanide leaching of high-content (5 at.%) gold-ceria materials prepared by deposition–precipitation. These catalysts, containing cationic gold in ceria, are active for both the low-temperature water–gas shift (WGS) reaction and the preferential oxidation of C...

Novel embedded Pd@CeO(2) catalysts: a way to active and stable catalysts.

1-wt% Pd-CeO(2) catalysts were prepared by co-precipitation of Pd nanoparticles with ceria (Pd@CeO(2)-CP), by a microemulsion procedure (Pd@CeO(2)-ME), and by normal impregnation of Pd salts (Pd/CeO(2)-IMP) in order to test the concept that Pd-CeO(2) catalysts could be more stable for the water-gas-shift (WGS) reaction when the Pd is embedded in CeO(2). Initial WGS rates measured at 250 degrees...

preparation and characterization of new co-fe and fe-mn nano catalysts using resol phenolic resin and response surface methodology study for fischer-tropsch synthesis

کاتالیزورهای co-fe-resol/sio2و fe-mn-resol/sio2 با استفاده از روش ساده و ارزان قیمت همرسوبی تهیه شدند. از رزین پلیمری resol در فرآیند تهیه کاتالیزور استفاده شد.

Electrochemical Preferential Oxidation of CO in Reformate