B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 21/08 (2006.01) B01D 53/94 (2006.01) B01J 21/06 (2006.01) B01J 23/42 (2006.01) B01J 35/00 (2006.01) B01J 37/02 (2006.01)
Patent
CA 2295850
The invention concerns a method for treating gases to reduce nitrogen oxide emissions wherein a catalytic composition containing a catalytic phase on a support is used, characterised in that the support is based on silica and titanium oxide in an atomic proportion Ti/Ti+Si ranging between 0.1 and 15 %. The method is particularly useful for treating exhaust gases of diesel engines or of engines using a weak mixture.
La présente invention concerne un procédé de traitement de gaz pour la réduction des émissions des oxydes d'azote. Ce procédé est du type dans lequel on utilise une composition catalytique comprenant une phase catalytique sur un support et il est caractérisé en ce que le support est à base de silice et d'oxyde de titane dans une proportion atomique Ti/Ti+Si comprise entre 0,1 et 15 %. Le procédé de l'invention s'applique plus particulièrement au traitement des gaz d'échappement de moteurs diesel ou de moteurs fonctionnant en mélange pauvre.
Hedouin Catherine
Macaudiere Pierre
Rhodia Chimie
Robic
LandOfFree
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