Synthesis,Characterization and Application of Co–MgO Mixed Oxides in Oxidation of Carbon Monoxide |
| |
| Authors: | Z Fattah A Biabani-Ravandi A Irankhah H R Arandiyan |
| |
| Affiliation: | 1. Catalyst and Advanced Materials Research Laboratory, Chemical Engineering Department, Faculty of Engineering, University of Kashan, Kashan, Iran;2. Faculty of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran;3. Particles and Catalysis Research Group, School of Chemical Engineering, The University of New South Wales, Sydney, Australia |
| |
| Abstract: | The present work deals with the synthesis of nanostructured Co–MgO mixed oxides with different weight ratios of cobalt by a facile co-precipitation method as a catalyst for low-temperature CO oxidation. The prepared samples were characterized by X-ray diffraction (XRD), N2 adsorption/desorption (BET), Fourier transform infrared spectroscopy (FTIR), and transmission and scanning electron microscopies (TEM and SEM) techniques. The results revealed that inexpensive cobalt–magnesium mixed metal oxide nanoparticles have a high potential as catalyst in low-temperature CO oxidation. The Co–MgO mixed oxide with 30 wt.% cobalt had the highest activity. The results showed that the catalysts pretreated under O2-containing atmosphere possessed higher activity compared to the catalyst pretreated under H2 atmosphere. Co–MgO catalyst showed a good repeatability in reaction condition. The stability test exhibited that the Co–MgO mixed oxides were highly stable for CO oxidation over a 30 h time on stream in the feed gas containing a high amount of moisture and CO2. |
| |
| Keywords: | Carbon monoxide Catalyst Cobalt Magnesium Mixed metal oxide Oxidation |
|
|
