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Retrofits in catalyst for reduction in the process of preparation of a catalyst reduction and process for reduction of oxides of nitrogen in a gas mixture of mess
Retrofits in catalyst for reduction in the process of preparation of a catalyst reduction and process for reduction of oxides of nitrogen in a gas mixture of mess
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机译:在催化剂还原剂的制备过程中以及在混合气体混合物中还原氮氧化物的方法中用于还原的催化剂的改造
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1488017 Nitrogen oxide reduction catalyst KOGYO KAIHATSU KENKYUSHO 20 Sept 1974 [27 Sept 1973] 41128/74 Heading B1E [Also in Division Cl] Nitrogen oxides are catalytically reduced by a catalyst comprising a synthetic zeolite carrying a metal or metal compound of at least one metal of Gps. IB (Cu, Ag, Au), 2B (Zn, Hg. Cd) or 8 (e.g. Fe, Co, Ni or Pd), the zeolite having been pretreated with an ammonium ion-containing solution before application of the metal or metal compound. The zeolite may be a type -A, -X or -Y. The weight ratio of zeolite to metal may be 100 : 0.01 to 100 : 10. The zeolite may be heated to 100-900‹C after applying the metal. The Examples relate to Fe on zeolites SA and 13X and Cu on zeolite SA.
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