Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9608083 | Applied Catalysis A: General | 2005 | 5 Pages |
Abstract
Steam reforming of methanol was carried out over CuO/CeO2-based catalysts. The optimum amount of CuO in CuO/CeO2 was 80Â wt.%. The addition of ZrO2 had an accelerating effect; the best weight ratio of CuO/CeO2/ZrO2 was 8/1/1. Although CuO/CeO2 gradually lost its activity during the reaction, no deactivation was observed for CuO/ZrO2 or CuO/CeO2/ZrO2 during the reaction for 5Â h. X-ray diffraction analysis revealed that copper was present in the form of Cu2O during the reaction when combined with ZrO2, mainly as Cu metal with CeO2, and as a mixture of Cu metal plus trace amount of Cu2O with CeO2/ZrO2. TPR and XANES analyses also showed that all of Cu species were stabilized as Cu2O in the presence of ZrO2. The synergistic effect of ZrO2 was discussed.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Hisayuki Oguchi, Toshiya Nishiguchi, Tomoaki Matsumoto, Hiroyoshi Kanai, Kazunori Utani, Yasuyuki Matsumura, Seiichiro Imamura,