C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 39/44 (2006.01) B01D 53/86 (2006.01) B01J 29/88 (2006.01)
Patent
CA 2315345
The invention concerns a catalyst for reducing nitrous oxide content in gases operating at relatively low temperatures, whereof the activity is hardly sensitive to the presence of water vapour and highly resistant to hydrothermal degradation prepared from iron-exchanged ferrierite. The invention is useful for treating gases with low N2O content, such as gases coming from workshops making nitric acid as well as gases with high N2O content emitted during oxidation of organic compounds by nitric acid.
Un catalyseur pour la réduction de la teneur de gaz en protoxyde d'azote fonctionnant à températures relativement basses, dont l'activité est peu sensible à la présence de vapeur d'eau et résistant bien à la dégradation hydrothermique est élaboré à partir de ferriérite échangée au fer. Application au traitement des gaz à faible teneur en N2O, tels les gaz issus des ateliers de fabrication d'acide nitrique comme des gaz à forte teneur en N2O qui sont émis au cours des oxydations de composés organiques par l'acide nitrique.
Hamon Christian
Malefant Karine
Neveu Bernard (decede)
Gpn
Grande-Paroisse S.a.
Institut Regional Des Materiaux Avances (irma)
Robic
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