Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
51498 | Catalysis Communications | 2009 | 5 Pages |
Abstract
Three-dimensionally ordered macro-porous (3DOM) CuO–CeO2 was prepared by using polystyrene (PS) colloidal crystal as the template, nitrate as the precursor and citric acid as the chelator. For CO preferential oxidation (PROX), at a higher space velocity of 160,000 mL gcat−1 h−1, complete CO conversion has been obtained between 150 °C and 175 °C. As the macro-pores of 3DOM are destroyed, complete CO conversion cannot be obtained even at a lower space velocity of 80,000 mL gcat−1 h−1, and likewise over particulate CuO–CeO2 catalysts. It is proposed that the ordered macro-pores in the 3DOM catalyst favor mass transfer, resulting in the excellent catalytic performance.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Yuan Zhang, Hao Liang, Xin Yu Gao, Yuan Liu,