without changing your settings we'll assume you are happy to receive all RSC cookies.
You can change your cookie settings by navigating to our Privacy and Cookies page and following the instructions. These instructions
are also obtainable from the privacy link at the bottom of any RSC page.
Base metal substituted Sn0.95M0.05O2−δ (M = Cu, Fe, Mn, Co) catalysts were synthesized by the solution combustion method and characterized by XRD, XPS, TEM and BET surface area analysis. The catalytic activities of these materials were investigated by performing COoxidation. The rates and the apparent activation energies of the reaction for COoxidation were determined for each catalyst. All the substituted catalysts showed high rates and lower activation energies for the oxidation of CO as compared to unsubstituted SnO2. The rate was found to be much higher over copper substituted SnO2 as compared to other studied catalysts. 100% CO conversion was obtained below 225 °C over this catalyst. A bifunctional reaction mechanism was developed that accounts for CO adsorption on base metal and support ions and O2 dissociation on the oxide ion vacancy. The kinetic parameters were determined by fitting the model to the experimental data. The high rates of the COoxidation reactions at low temperatures were rationalized by the high dissociative chemisorption of adsorbed O2 over these catalysts.
Fetching data from CrossRef. This may take some time to load.
This may take some time to load.
Catalysis Science & Technology
- Information Point