| 摘要 |
PROBLEM TO BE SOLVED: To provide a marine exhaust gas treatment catalyst which is used for treating the exhaust gas to be generated from a marine diesel engine, allows NOx to be treated stably over a long time even when the exhaust gas has a low temperature range, and allows NOx to be treated stably over a long time even when sulfur oxide is contained in the exhaust gas in particular.SOLUTION: The marine exhaust gas treatment catalyst contains: a compound oxide and/or a mixed oxide, which are obtained from three kinds of compounds of titanium, silicon and tungsten by a coprecipitation method, as an A component; a compound of at least one element selected from vanadium, niobium and tantalum as a B component; and another compound of at least one element selected from zinc, manganese, iron and cobalt.SELECTED DRAWING: None |
