Catalysts for the removal of nitrogen oxides
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United States of America Patent
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Oct 30, 1990
Grant Date -
N/A
app pub date -
Nov 30, 1988
filing date -
Dec 2, 1987
priority date (Note) -
Expired
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Abstract
Disclosed is a catalyst for removing nitrogen oxides from exhaust gases from internal combustion devices such as boilers, gas turbine and diesel engines which is characterized in that the catalyst contains Component A comprising type II anhydrous gypsum (insoluble anhydrite) and Component B comprising titanium oxide, the sum of the weights of Components A and B is equal to or more than 80 weight % of the total weight of the catalyst, the weight ratio of Component B to (Component A+Component B) is between 0.05 and 0.3, and the catalyst contains at least one or more of the oxides of vanadium, tungsten, molybdenum, iron, copper, chromium and manganese.
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