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Enhancing the K resistance of CeTiO x catalyst in NH 3-SCR reaction by CuO modification
Kang, Keke1,2,3; Yao, Xiaojiang1,2,3; Cao, Jun1,2; Li, Zhe1,2,3; Rong, Jing1,2; Luo, Wen1,2,3; Zhao, Wanxia1,2; Chen, Yang1,2,3
2021-01-15
摘要It is generally accepted that CeTiOx catalyst owns outstanding catalytic activity for ammonia-selective catalytic reduction (NH3-SCR), but the tolerance to alkali metals is still dissatisfactory. Thus, it is of great importance to further elevate the catalytic activity and resistance to alkali metals of CeTiOx catalyst. In our work, a series of CeTiOx, CuO/CeTiOx, K-CeTiOx and K-CuO/CeTiOx catalysts were prepared to comprehensively analyze the influence of CuO modification on the physicochemical features, catalytic activity and anti-K ability of CeTiOx catalyst. The results manifest that CuO modification effectively enhances low-temperature catalytic activity and anti-K poisoning ability of CeTiOx catalyst by protecting the reduction ability and the surface acidity as well as weakening the adsorption strength of NOx.
关键词CeTiOx catalyst br CuO modification Anti-K ability NH3-SCR reaction
发表期刊JOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
卷号402页码:15
通讯作者Yao, Xiaojiang(yaoxj@cigit.ac.cn)
收录类别SCI
WOS记录号WOS:000593841100006
语种英语