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
- Application Number:
- TRN: 85-027114
- OSTI ID:
- 6434040
- Resource Relation:
- Patent File Date: Filed date 25 Jan 1984; Other Information: PAT-APPL-573753
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
CATALYSTS
CHEMICAL COMPOSITION
GASEOUS WASTES
AIR POLLUTION CONTROL
DENITRIFICATION
NITROGEN OXIDES
REMOVAL
ACIDIFICATION
AMMONIA
CATALYST SUPPORTS
CHEMICAL PREPARATION
DEPOSITION
INORGANIC COMPOUNDS
ORGANIC ACIDS
OXIDES
REDUCTION
TUNGSTEN
VANADIUM
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
ELEMENTS
HYDRIDES
HYDROGEN COMPOUNDS
METALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION CONTROL
SYNTHESIS
TRANSITION ELEMENTS
WASTES
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)
CATALYSTS
CHEMICAL COMPOSITION
GASEOUS WASTES
AIR POLLUTION CONTROL
DENITRIFICATION
NITROGEN OXIDES
REMOVAL
ACIDIFICATION
AMMONIA
CATALYST SUPPORTS
CHEMICAL PREPARATION
DEPOSITION
INORGANIC COMPOUNDS
ORGANIC ACIDS
OXIDES
REDUCTION
TUNGSTEN
VANADIUM
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
ELEMENTS
HYDRIDES
HYDROGEN COMPOUNDS
METALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION CONTROL
SYNTHESIS
TRANSITION ELEMENTS
WASTES
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)