Scr catalyst for removal of nitrogen oxides
AssigneeKorea Institute of Science and Technology
InventorsHeon-Phil Ha, Soon-Hyo Chung, Young-Joo Oh
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Abstract
The present invention provides for catalysts for selective catalytic reduction of nitrogen oxides. The catalysts comprise metal oxide supporters, vanadium, an active material, and antimony, a promoter that acts as a catalyst for reduction of nitrogen oxides, and at the same time, can promote higher sulfur poisoning resistance and low temperature catalytic activity. The amount of antimony of the catalysts is preferably 0.5-7 wt. %.
Claims8
A method of reducing nitrogen oxides produced during fuel combustion, at a temperature of 300° C. or lower, by using a catalyst, the method comprising:
- processing the nitrogen oxides being produced during said fuel combustion with a supporter comprising titanium dioxide (TiO2);
- an active material comprising vanadium compounds;
- and a promoter comprising antimony compounds,
- wherein the catalyst is active in nitrogen oxides reduction at a temperature of 300° C. or lower and has sulfur poisoning resistance,
- wherein the active material is comprised in 1-3 wt. % and the promoter is comprised in 0.5-7 wt. % based on the total weight of the catalyst.
Dependencies are inferred from the claim text.