초록 ▼

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

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.

대표청구항 ▼

A catalyst composition useful for the reduction of nitrogen oxide comprising an inorganic oxide support having tungsten and vanadium deposited thereon, said support having been treated, before or after the deposition of either of said tungsten or vanadium thereon, with a strong mineral acid, excludi

A catalyst composition useful for the reduction of nitrogen oxide comprising an inorganic oxide support having tungsten and vanadium deposited thereon, said support having been treated, before or after the deposition of either of said tungsten or vanadium thereon, with a strong mineral acid, excluding sulfuric and phosphoric acids.