STICKSTOFFOXYD-ZERSETZENDER KATALYSATOR UND ENTSTICKUNGSVERFAHREN UNTER VERWENDUNG DESSELBEN

This invention aims at providing a novel NOx decomposing catalyst and a denitration method using the same, and the characteristics of the invention reside in an NOx decomposing catalyst in which vanadium oxide is supported on anatase type titanium oxide having a specific surface area of 100-250 m /g...

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Main Authors TORIKAI, YUJI, MITSUI MINING CO., LTD. KYUSHU RES., KITAKYUSHU-SHI, FUKUOKA-KEN 408, JP, IWANAGA, YUTAKA, MITSUI MINING CO.LTD. KYUSHU RES., KITAKYUSHU-SHI, FUKUOKA-KEN 808, JP, IKEYAMA, NOBUHIDE, MITSUI MINING CO., LTD. KYUSHU, KITAKYUSHU-SHI,O FUKUOKA-KEN 408, JP, ADACHI, MASATOSI, MITSUI MINING CO., LTD. KYUSHU, KITAKYUSHU-SHI, FUKUOKA-KEN 808USHU-SHI,, JP
Format Patent
LanguageGerman
Published 22.04.1999
Edition6
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:This invention aims at providing a novel NOx decomposing catalyst and a denitration method using the same, and the characteristics of the invention reside in an NOx decomposing catalyst in which vanadium oxide is supported on anatase type titanium oxide having a specific surface area of 100-250 m /g and not less than 0.05 cc/g each of micropores of diameters of 15-25 ANGSTROM and 75-85 ANGSTROM , and an exhaust gas denitration method in which an NOx-containing exhaust gas is treated by bringing the same gas into contact with the above-mentioned catalyst at a temperature in the range of 100-350 DEG C in the presence of a reducing gas. An NOx-containing exhaust gas with which a catalyst-poisoning substance, such as water and SOx coexists can be treated efficiently at a comparatively low temperature of not higher than 170 DEG C, at which a practical treatment for the exhaust gas cannot be conducted in a conventional method of this kind, without causing N2O to be byproduced.
Bibliography:Application Number: DE19946014063T