CATALYSEURS DE REDUCTION DES OXYDES D'AZOTE DANS UN MILIEU OXYDANT, PREPARATION ET UTILISATION

• Main Authors: MABILON GIL, BOURGES PATRICK, LACOMBE SYLVIE, BOUCHEZ MATTHIAS
• Format: Patent
• Language: French
• Published: 11.02.2000
• Edition: 7
• Subjects: CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSEGASES [GHG]; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

The low temperature (150-300 degrees C) elimination of nitrogen oxides comprises a highly selective reduction to nitrogen and minimal production of nitrous oxide, by use of a catalyst containing a NU-86, NU-87 or EU-1 type zeolite. The catalyst comprises a refractory inorganic oxide which contains a zeolite NU-86, NU-87 or EU-1, a group VIB, VIIB, VIII or 1B transition metal and/or a group VIII noble metal. Independent claims are also included for the use of the catalyst in the catalytic reduction of nitrogen oxides and for the preparation of the catalyst.