| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 55719 | Catalysis Today | 2011 | 8 Pages |
CZ doped by nickel oxide with different loadings was prepared through a co-precipitation and supercritical dried method and the corresponding Pd-only TWCs were prepared and characterized. The results demonstrate that Pd/CZNi(3%) catalyst exhibits the best catalytic activity and the widest operation window before and after aging, compared with that of other catalysts. Moreover, the introduction of nickel oxide with 3% loading increases the average pore diameter and broadens the range of pore size distribution of sample, which is propitious to the formation of accumulative pore favoring the adsorption/desorption of reaction species. The introduction of nickel oxide with suitable loading (3%) promotes the thermal stability of CZ corresponding to the better surface composition and more concentration of Ce3+ or oxygen vacancy. Furthermore, the introduction of nickel oxide with 3% loading exhibits the best DOSC compared with other content doping, possibly due to the better structure and better surface composition and better thermal stability of CZNi(3%).
Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (114 K)Download as PowerPoint slideHighlights► Pd/CZNi(3%) catalyst exhibits the best catalytic activity before and after aging. ► The introduction of Ni with 3% loading promotes the thermal stability of CZ. ► CZNi(3%) exhibits better surface composition and more concentration of Ce3+. ► The increasing of oxygen vacancies for CZNi leads to the enhancement of DOSC.
