Journal
CATALYSIS LETTERS
Volume 146, Issue 7, Pages 1221-1230Publisher
SPRINGER
DOI: 10.1007/s10562-016-1739-0
Keywords
NOx removal; CeMoxOy/Al2O3; Molybdenum additives; Promotional effect; Selective catalytic reduction
Categories
Funding
- National Natural Science Foundation of China [51272105]
- Jiangsu Provincial Science and Technology Supporting Program [BE2013718]
- Research Subject of Environmental Protection Department of Jiangsu Province of China [2013006]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Ask authors/readers for more resources
A series of CeO2/Al2O3 and CeMoxOy/Al2O3 catalysts were prepared by an extrusion method for selective catalytic reduction of NOx, and were characterized by techniques of XRD, XPS, N-2-BET, H-2-TPR and NH3-TPD. Promotional effects of molybdenum additives on catalytic performances and tolerances toward SO2 and H2O poisoning of the catalysts were comparatively studied. Results showed that the CeO2/Al2O3 catalyst with the Ce/Al molar ratio of 1:5 exhibited the best catalytic performance; molybdenum additives greatly improved catalytic performance of the CeMoxOy/Al2O3 catalysts, and the catalyst with the Al/Ce/Mo molar ratio of 5:1:0.15 calcinated at 550 A degrees C exhibited the highest catalytic activity above 95 % in active temperature window of 250-430 A degrees C under the gas hourly space velocity (GHSV) of 7200 h(-1). Moreover, molybdenum additives broadened the range of the active temperature, and significantly enhanced the anti-sulfur poisoning ability. Analysis showed that the promotional effects of molybdenum additives were attributed to the improvement of specific surface area, increment of surface acidity and the enhancement of the redox properties.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available