| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 149809 | Chemical Engineering Journal | 2012 | 7 Pages |
The CuO/ZnO/ZrO2/Al2O3 catalysts were prepared by co-precipitation method and the effects of ZrO2 on steam reforming of methanol over CuO/ZnO/Al2O3 catalysts with various CuO/ZnO ratios (40/50–10/80) were examined and discussed. Zirconium oxide improved the dispersion and reducibility of the CuO/ZnO/Al2O3 catalysts and promoted the adsorption of methanol. The promoting effect of ZrO2 was observed only on the CuO/ZnO/Al2O3 with the CuO/ZnO ratio less than 0.8. A lower CuO/ZnO ratio in the CuO/ZnO/Al2O3 catalysts was associated with greater promoting effect of ZrO2 in the SRM reactions, which depend on appropriate interactions through the interface between CuO and ZnO.
► ZrO2 improved the dispersion and reducibility of the CuO/ZnO/Al2O3 catalysts. ► ZrO2 also enhanced the adsorption of methanol on the CuO/ZnO/Al2O3 catalysts. ► A lower CuO/ZnO ratio was associated with more promoting effect of ZrO2. ► An appropriate CuO/ZnO ratio 0.75–0.8 was needed for the promoting effect of ZrO2.
