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US4916107A Catalyst for the selective reduction of nitrogen oxides with ammonia 失效
用氨选择还原氮氧化物的催化剂

Catalyst for the selective reduction of nitrogen oxides with ammonia
摘要:
A catalyst for the selective reduction with ammonia of nitrogen oxides from an intimate mixture of at least 3 metals in the form of their oxides, namely, titanium, tungsten and at least one of the metals vanadium, iron, niobium, molybdenum, with an atomic ratio of Ti to the other metals of 1:0.001 to 1, wherein there is used as oxide of the titanium a product obtained by flame hydrolysis, which product is impregnated with solutions of the salts of the other metals and is dried and calcined at a high temperature.
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