Table 1.
Temperature of 100% CO conversion for different catalyst states as a function on the nature of support modifying additives.
| Sample | Temperature for 100% CO Conversion, °C | ||||
|---|---|---|---|---|---|
| 1 * | 2 * | 3 * | 4 * | 5 * | |
| Au/TiO2 | 30 | 30 | 80 | 30 | 30 |
| Au/Fe2O3/TiO2 | 305 | 30 | 80 | 30 | 30 |
| Au/CeO2/TiO2 | 230 | 30 | 80 | 30 | 30 |
| Au/La2O3/TiO2 | 215 | 30 | 30 | 30 | 30 |
1 *—as-prepared; 2 *—recently prepared after H2 (300 °C, 1 h) treatment; 3 *—after storage (about 1 year); 4 *—after long storage and H2 (300 °C, 1 h) treatment; 5 *—after long storage, H2 (300 °C, 1 h) and consecutive O2 (300 °C, 1 h) treatments.