Catalyst for the reduction of nitrogen oxides in gaseous mixtures and method of making the catalyst
Patent
·
OSTI ID:6434040
A catalyst useful for the reduction of nitrogen oxide comprising vanadium and optionally, tungsten deposited on an inorganic oxide support, preferably titania. A precursor of the catalyst is treated with an acid from the group comprising the moderately strong organic acids and/or the strong mineral acids, excluding sulfuric acid and phosphoric acid, preferably following the deposition of the metal(S). Other aspects of the invention are a method of preparing the catalyst and a process for its use wherein a gaseous stream of nitrogen oxide and ammonia is contacted with the catalyst at reductive reaction conditions.
- Assignee:
- UOP Inc.
- Patent Number(s):
- US 4518710
- OSTI ID:
- 6434040
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACIDIFICATION
AIR POLLUTION CONTROL
AMMONIA
CATALYST SUPPORTS
CATALYSTS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CONTROL
DENITRIFICATION
DEPOSITION
ELEMENTS
GASEOUS WASTES
HYDRIDES
HYDROGEN COMPOUNDS
INORGANIC COMPOUNDS
METALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
REDUCTION
REMOVAL
SYNTHESIS
TRANSITION ELEMENTS
TUNGSTEN
VANADIUM
WASTES
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACIDIFICATION
AIR POLLUTION CONTROL
AMMONIA
CATALYST SUPPORTS
CATALYSTS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CONTROL
DENITRIFICATION
DEPOSITION
ELEMENTS
GASEOUS WASTES
HYDRIDES
HYDROGEN COMPOUNDS
INORGANIC COMPOUNDS
METALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
REDUCTION
REMOVAL
SYNTHESIS
TRANSITION ELEMENTS
TUNGSTEN
VANADIUM
WASTES