Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6503614 | Catalysis Communications | 2013 | 4 Pages |
Abstract
In this work, cerium-tungsten oxide catalysts were prepared by three methods: single step sol-gel (SG), impregnation (IM), and solid processing (SP). The catalysts were used for selective catalytic reduction (SCR) of NOx with ammonia over a wide temperature range. The results indicated that the catalysts prepared by the SP and IM methods exhibited better SCR activity than that prepared via the SG method in 175-500 °C. The excellent activity can be attributed to larger surface area, higher surface concentrations of Ce and Ce3 +, enhanced NO oxidization ability, and greater number of surface acid sites.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Caixia Liu, Liang Chen, Huazhen Chang, Lei Ma, Yue Peng, Hamidreza Arandiyan, Junhua Li,