Influence of support composition on the reduction of nitric oxide over rhodium catalysts
Journal Article
·
· J. Catal.; (United States)
The NO reduction by CO and H/sub 2/ over Rh/SiO/sub 2/, Rh/Al/sub 2/O/sub 3/, Rh/MgO, Rh/La/sub 2/O/sub 3/, and Rh/TiO/sub 2/ was investigated. Support composition was found to influence the activity, but not the selectivity of Rh. Exceptionally high low-temperature activity was obtained with Rh/TiO/sub 2/. The rate parameters for NO reduction over Rh/TiO/sub 2/ are distinctly different from those for all other catalysts. The high activity of Rh/TiO/sub 2/ is attributed to the presence of catalytically active centers on the support as well as on the surface of the supported Rh crystallites.
- Research Organization:
- Univ. of California, Berkeley (USA)
- OSTI ID:
- 5182176
- Journal Information:
- J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 98:1; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
33 ADVANCED PROPULSION SYSTEMS
330701 -- Emission Control-- Nitrogen Oxides
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
550200 -- Biochemistry
59 BASIC BIOLOGICAL SCIENCES
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC CONVERTERS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
ELEMENTS
EQUIPMENT
HYDROGEN
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
METALS
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PLATINUM METALS
POLLUTION CONTROL EQUIPMENT
RARE EARTH COMPOUNDS
REDUCTION
RHODIUM
SILICON COMPOUNDS
SILICON OXIDES
SYNTHESIS
TESTING
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
330701 -- Emission Control-- Nitrogen Oxides
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
550200 -- Biochemistry
59 BASIC BIOLOGICAL SCIENCES
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC CONVERTERS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
ELEMENTS
EQUIPMENT
HYDROGEN
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
METALS
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PLATINUM METALS
POLLUTION CONTROL EQUIPMENT
RARE EARTH COMPOUNDS
REDUCTION
RHODIUM
SILICON COMPOUNDS
SILICON OXIDES
SYNTHESIS
TESTING
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS