Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4756614 | Catalysis Communications | 2017 | 4 Pages |
Abstract
Dispersed CuyTi1Ox catalysts derived from Cu-Ti-CO3 layered double hydroxides (LDHs) were successfully prepared. Due to the better dispersion of active CuO phase, the optimal catalyst Cu1Ti1Ox reached a high NOx conversion of 88.9% at 200 °C, which is significantly higher than that of the control catalyst 10 wt% CuO/TiO2 (29.5%). Cu1Ti1Ox catalyst also showed improved SO2 resistance, with a very stable NOx conversion of 76.4% at 200 °C after 8 h running with 50 ppm SO2, much higher than that of 10 wt% CuO/TiO2 (3.3%). The reaction mechanism was discussed with NH3-TPD and H2-TPR analyses, which indicated that Cu1Ti1Ox has more surface acidic sites and higher redox property than 10 wt% CuO/TiO2. In all, CuyTi1Ox prepared from Cu-Ti LDH precursor can work as highly efficient and SO2 resistant low-temperature NH3-SCR catalyst for NOx removal.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Yu Nie, Qinghua Yan, Sining Chen, Dermot O'Hare, Qiang Wang,