Global Patent Index - EP 0994749 A1

EP 0994749 A1 2000-04-26 - METHOD FOR TREATING GASES TO REDUCE NITROGEN OXIDE EMISSIONS USING A CATALYTIC COMPOSITION BASED ON SILICA AND TITANIUM OXIDE

Title (en)

METHOD FOR TREATING GASES TO REDUCE NITROGEN OXIDE EMISSIONS USING A CATALYTIC COMPOSITION BASED ON SILICA AND TITANIUM OXIDE

Title (de)

VERFAHREN ZUR REDUKTION VON STICKSTOFFOXIDEMISSIONEN MITTELS EINER KATALYTISCHEN ZUSAMMENSETZUNG MIT EINEM TRÄGER AUF TITANOXID-SILICIUMOXID BASIS

Title (fr)

PROCEDE DE TRAITEMENT DE GAZ POUR LA REDUCTION DES EMISSIONS DES OXYDES D'AZOTE UTILISANT UNE COMPOSITION CATALYTIQUE AVEC UN SUPPORT A BASE DE SILICE ET D'OXYDE DE TITANE

Publication

EP 0994749 A1 (FR)

Application

EP 98935077 A

Priority

  • FR 9801410 W
  • FR 9708422 A

Abstract (en)

[origin: FR2765492A1] 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.

IPC 1-7 (main, further and additional classification)

B01J 21/08; B01D 53/94

IPC 8 full level (invention and additional information)

B01D 53/94 (2006.01); B01J 21/06 (2006.01); B01J 21/08 (2006.01); B01J 23/42 (2006.01); B01J 23/63 (2006.01); B01J 32/00 (2006.01); F01N 3/10 (2006.01); F01N 3/28 (2006.01); B01J 35/00 (2006.01); B01J 37/02 (2006.01)

CPC (invention and additional information)

B01J 21/063 (2013.01); B01D 53/9418 (2013.01); B01J 21/08 (2013.01); B01D 2251/21 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/2063 (2013.01); B01D 2255/20707 (2013.01); B01J 23/42 (2013.01); B01J 35/0013 (2013.01); B01J 37/0211 (2013.01); Y02T 10/24 (2013.01)

Designated contracting state (EPC)

AT BE DE FR GB IT

EPO simple patent family

FR 2765492 A1 19990108; FR 2765492 B1 19990917; AU 8445398 A 19990125; CA 2295850 A1 19990114; CN 1124885 C 20031022; CN 1265606 A 20000906; EP 0994749 A1 20000426; JP 2000511111 A 20000829; US 6491886 B1 20021210; WO 9901216 A1 19990114; ZA 9805871 B 19990412

INPADOC legal status


2004-06-16 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20031216

2002-03-20 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020205

2000-04-26 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000201

2000-04-26 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE DE FR GB IT