B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
23/353, 252/95
B01J 23/22 (2006.01) B01D 53/86 (2006.01) B01D 53/36 (1990.01)
Patent
CA 2136758
SUMMARY The present invention aims at providing a novel NOx-decomposing catalyst and a denitrification method using the same. The feature thereof consists in an NOx-decomposing catalyst, in which vanadium oxide is supported on titanium oxide of anatase type, having a specific surface area of 100 to 250 m2/g and micro pores of 15 to 25 .ANG. in pore diameter and 75 to 85 A in pore diameter respectively in an amount of at least 0.05 cc/g and a method for the denitrifi- cation of a waste gas comprising contacting an NOx-containing waste gas with theabove described catalyst in the presence of a reducing gas at a temperature of 100 to 350°C. An NOx-containing waste gas with coexistent catalyst-poisonous materials such as water, SOx, etc. can be treated in effective manner at a rel- atively low temperature, e.g. 170°C or lower, at which no practical treatment can be carried out by the prior art method, without formation of N2O as a by- product. - 2 1 -
Adachi Masatosi
Ikeyama Nobuhide
Iwanaga Yutaka
Torikai Yuji
Mitsui Mining Co. Ltd.
Riches Mckenzie & Herbert Llp
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