Journal article
High performance vanadia-anatase nanoparticle catalysts for the selective catalytic reduction of NO by ammonia
Highly active nanoparticle SCR deNO(x) catalysts composed of amorphous vanadia on crystalline anatase have been prepared by a sol-gel, co-precipitation method using decomposable crystallization seeds. The catalysts were characterized by means of XRPD, TEM/SEM, FT-IR, nitrogen physisorption and NH(3)-TPD.
Due to the high-surface area anatase particles, loading of 20 wt% vanadia could be obtained without exceeding monolayer coverage of V(2)O(5). This resulted in unprecedented high deNO(x) SCR activity corresponding to a factor of two compared to an industrial reference and to other V(2)O(5)/TiO(2) catalysts reported in the literature in the examined temperature range of 200-400 degrees C.
The catalysts showed very high resistivity towards potassium poisoning maintaining a 15-30 times higher activity than the equally poisoned industrial reference catalyst, upon impregnation by 280 mu mole potassium/g of catalyst. (C) 2011 Elsevier Inc. All rights reserved.
Language: | English |
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Year: | 2011 |
Pages: | 60-67 |
ISSN: | 10902694 and 00219517 |
Types: | Journal article |
DOI: | 10.1016/j.jcat.2011.08.017 |
ORCIDs: | Riisager, Anders and Fehrmann, Rasmus |