Chemical reactivity of supported gold--4. Reduction of NO by H/sub 2/

Journal Article · Wed Nov 01 04:00:00 EST 1978 · J. Catal.; (United States)

OSTI ID:7061956

Galvagno, S; Parravano, G

Wide-angle X-ray scattering and transmission electron microscopy studies of 0.2-7Vertical Bar3< gold on alumina, silica, and magnesium oxide and kinetic studies of the reaction of nitric oxide with hydrogen to form molecular nitrogen or ammonia and of hydrogen-deuterium exchange over these catalysts showed that the selectivity for nitrogen depended on the electron density at the surface gold site and that the support affected the selectivity significantly. An increase in electron density at the gold site increased electron back-donation from metal to adsorbed nitric oxide; this weakened the N-O bond and facilitated the formation of nitrogen. The nitrogen selectivity increased in the order: silica Vertical Bar3; magnesium oxide Vertical Bar3; alumina.

• Research Organization: University of Michigan
• OSTI ID: 7061956
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 55:2; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical &amp; Physicochemical Properties
CATALYST SUPPORTS
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
ELECTRON DENSITY
ELEMENTS
GOLD
HYDROGEN
KINETICS
METALS
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
REDUCTION
STRUCTURAL CHEMICAL ANALYSIS
SURFACE PROPERTIES
TRANSITION ELEMENTS
YIELDS