Selective catalytic reduction of nitric oxide over vanadia/titania catalysts: Temperature-programmed desorption and isotopically labeled oxygen-exchange studies
- Ohio State Univ., Columbus, OH (United States). Dept. of Chemical Engineering
Temperature-programmed desorption (TPD) and isotopically labeled oxygen-exchange studies were performed over titania-supported vanadia catalysts and bare titania support. The catalysts were characterized using BET surface area analysis, X-ray diffraction, laser Raman spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, and thermal analysis techniques. The TPD experiments were performed over both the catalyst and the bare support using NO and NH[sub 3] as adsorbates. The exchange reactions performed were: [[sup 14]N[sup 16]O] [yields] [[sup 15]N[sup 18]O] and [[sup 16]O[sub 2]] [yields] [[sup 18]O[sub 2]]. Transient experiments which involved step changes such as [NH[sub 3] + O[sub 2]] [yields] [O[sub 2]] were also performed to observed the transient behavior of various products. These results were combined with the earlier work, and conclusions were drawn regarding the adsorption/desorption and exchange characteristics of these catalysts in the SCR reaction.
- OSTI ID:
- 6576170
- Journal Information:
- Industrial and Engineering Chemistry Research; (United States), Vol. 33:12; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
NITRIC OXIDE
SELECTIVE CATALYTIC REDUCTION
TITANIUM OXIDES
CATALYTIC EFFECTS
VANADIUM OXIDES
AIR POLLUTION CONTROL
AMMONIA
CHEMICAL REACTION KINETICS
ISOTOPIC EXCHANGE
REACTION INTERMEDIATES
SORPTION
TEMPERATURE CONTROL
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DENITRIFICATION
HYDRIDES
HYDROGEN COMPOUNDS
KINETICS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
REACTION KINETICS
REDUCTION
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
010800 - Coal
Lignite
& Peat- Waste Management