Formaldehyde Oxidation Over Manganese-Cerium-Aluminum Mixed Oxides Supported on Cordierite Monoliths at Low Temperatures
Park, S; Jeon, S; Kim, SH
| HERO ID | 2365156 |
|---|---|
| In Press | No |
| Year | 2014 |
| Title | Formaldehyde Oxidation Over Manganese-Cerium-Aluminum Mixed Oxides Supported on Cordierite Monoliths at Low Temperatures |
| Authors | Park, S; Jeon, S; Kim, SH |
| Journal | Catalysis Letters |
| Volume | 144 |
| Issue | 4 |
| Page Numbers | 756-766 |
| Abstract | The activities of base metal oxides comprising 27 % MnO2, 21 % CeO2, and 52 % Al2O3 supported on cordierite monoliths calcined at 1,000 degrees C for 3 h in air dropped very rapidly due to the migration of mobile silicon dioxide (SiO2) from the cordierite to the base metal oxides to react with or physically block the active catalysts. After immobilizing migrating SiO2, cordierite-supported base metal oxides catalysts pretreated with BaO-Al2O3 barrier coats and calcined at 1,000 degrees C for 3 h in air, initiated the oxidation of HCHO, CH3OH, and CO at 150, 170, and 220 degrees C, respectively. These catalysts turned out to be more effective for the formaldehyde oxidation than 0.5 % Pt/Al2O3 precious metal catalysts. The incorporation of small amount of palladium (0.147 wt%) to cordierite-supported base metal oxides pretreated with BaO-Al2O3 barrier coats, showed the superiority for HCHO, CH3OH, and CO oxidation to 0.5 % Pt/Al2O3 precious metal catalysts. The temperatures of 50 % conversion of formaldehyde, methanol, and carbon monoxide were 70 degrees C lower over base metal oxides catalysts than over precious metal catalysts. |
| Doi | 10.1007/s10562-014-1207-7 |
| Wosid | WOS:000332866400027 |
| Url | <Go to ISI>://WOS:000332866400027 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | Formaldehyde; Methanol; Base metal oxide; Cordierite; Barrier coat |