摘要 |
The composition contains as active material mordenite in an ammonium or acidic form with a residual sodium content lower than 1,000 ppm wt, representing 70 to 95 % of the total weight of the catalyst composition, the remainder consisting of a binder; the active material itself may be in the form of small-pore mordenite exchanged with the copper cation. …<??>Application to the purification of effluents with a high content of nitrogen oxides, in particular to the decontamination of tail gases discharged into the atmosphere, in the manufacture of nitric acid. |