Heterogeneous photoreduction of nitrogen to ammonia on tungsten oxide

Journal Article · Thu Nov 06 04:00:00 EST 1986 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100281a031· OSTI ID:7038876

Endoh, E; Leland, J K; Bard, A J

Nitrogen was photosynthetically reduced to NH/sub 3/ with irradiated substoichiometric tungsten oxides and tungsten trioxide, WO/sub 3/. The reaction occurred with moist N/sub 2/ above WO/sub 3/ or substoichiometric WO/sub 3-x/ or with substoichiometric tungsten oxide dispersions in N/sub 2/-saturated aqueous solutions. A decrease in the rate of NH/sub 3/ formation at WO/sub 3/ with time was attributed to tungsten bronze formation. The yields of NH/sub 3/ with WO/sub 3-x/ and WO/sub 2.96/ were roughly proportional to time and were about 0.1 ..mu..g/h. Ammonia production for dispersions of WO/sub 3-x/ in an aqueous phase occurred by a thermal, rather than a photochemical, reaction.

• Research Organization: Univ. of Texas, Austin
• OSTI ID: 7038876
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 90:23; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

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10 SYNTHETIC FUELS
14 SOLAR ENERGY
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Photobiological
& Thermochemical Conversion-- (1980-)
AMMONIA
AQUEOUS SOLUTIONS
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
DATA
DISPERSIONS
ELEMENTS
EXPERIMENTAL DATA
HYDRIDES
HYDROGEN COMPOUNDS
INFORMATION
KINETICS
MIXTURES
NITROGEN
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
REACTION KINETICS
REDUCTION
REFRACTORY METAL COMPOUNDS
SOLUTIONS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
TUNGSTEN OXIDES
YIELDS