The catalytic reduction of nitric oxide by ammonia over a clean and vanadium oxide-coated platinum foil

Journal Article · Wed May 01 00:00:00 EDT 1991 · Journal of Catalysis; (USA)

DOI:https://doi.org/10.1016/0021-9517(91)90022-V· OSTI ID:5539316

van Tol, M F.H. ^[1]; Quinlan, M A ^[2]; Luck, F ^[3]; Somorjai, G A ^[4]; Nieuwenhuys, B E ^[5]

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1. Leiden Univ. (The Netherlands) Lawrence Berkeley National Laboratory, Berkeley, California (USA)
2. Lawrence Berkeley National Laboratory, Berkeley, California (USA)
3. Lawrence Berkeley National Laboratory, Berkeley, California (USA) Rhone-Poulenc Recherches, Aubervilliers (France)
4. Lawrence Berkeley National Laboratory, Berkeley, California (USA) Univ. of California, Berkeley, California (USA)
5. Leiden Univ. (The Netherlands)

The reduction of NO by NH{sub 3} could be readily monitored over a 2-cm{sup 2} area platinum foil in the temperature range of 450-560 K. The reaction is first order in NO and zero order in NH{sub 3} partial pressures, and the rate is given by r{sub NO}=5{times}10{sup 7} (NO) exp(-E/RT)(mol/cm{sup 2}.s) with E=113{plus minus}20 kJ/mol. Vanadium oxide forms three-dimensional islands on Pt with a stoichiometry near V{sub 2}O{sub 4}. Its presence does not alter the activation energy appreciably but reduces the rate by blocking the active platinum sites.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5539316
• Journal Information: Journal of Catalysis; (USA), Vol. 129:1; ISSN 0021-9517
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
54 ENVIRONMENTAL SCIENCES
NITRIC OXIDE
SELECTIVE CATALYTIC REDUCTION
PLATINUM
CATALYTIC EFFECTS
VANADIUM OXIDES
ACTIVATION ENERGY
AMMONIA
CHEMICAL REACTION KINETICS
DENITRIFICATION
FLUE GAS
FOSSIL-FUEL POWER PLANTS
HIGH TEMPERATURE
KINETIC EQUATIONS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
ENERGY
EQUATIONS
GASEOUS WASTES
HYDRIDES
HYDROGEN COMPOUNDS
KINETICS
METALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
POWER PLANTS
REACTION KINETICS
REDUCTION
THERMAL POWER PLANTS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VANADIUM COMPOUNDS
WASTES
010800* - Coal
Lignite
& Peat- Waste Management
200202 - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)