期刊
CATALYSIS COMMUNICATIONS
卷 100, 期 -, 页码 117-120出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2017.06.035
关键词
W-modified SnMnCeOx; NH3-SCR; N-2 selectivity; Resistance; Redox property
资金
- Public Projects Foundation of China Ministry of Environmental Protection [201509021, 201509012]
- National key research and development program [2016YFC0203900, 2016YFC0203901]
- National Natural Science Foundation of China [51478241, 21577173]
A series of W-modified SnMnCeOx catalysts was prepared by a co-precipitation method and investigated for the selective catalytic reduction (SCR) of NOx with NH3. It was found that W-modified SnMnCeOx catalyst enhanced not only the N-2-selectivity but also the SO2 and H2O resistance of SnMnCeOx. Based on the H-2-TPR and XPS results obtained, the decline of redox ability for W-modified SnMnCeOx catalysts might account for its excellent N-2-selectivity. The results of NH3-TPD and in situ DRIFTS revealed that addition of W into the SnMriCeO(x) catalyst significantly increased its surface acidity.
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