Global Patent Index - EP 1017478 A1

EP 1017478 A1 2000-07-12 - METHOD FOR REDUCING NITROUS OXIDE IN GASES AND CORRESPONDING CATALYSTS

Title (en)

METHOD FOR REDUCING NITROUS OXIDE IN GASES AND CORRESPONDING CATALYSTS

Title (de)

VERFAHREN ZUR REDUZIERUNG VON DISTICKSTOFFOXID IN GASEN UND ENTSPRECHENDE KATALYSATOREN

Title (fr)

PROCEDE POUR L'ABATTEMENT DU PROTOXYDE D'AZOTE DANS LES GAZ ET CATALYSEURS CORRESPONDANTS

Publication

EP 1017478 A1 (FR)

Application

EP 99920945 A

Priority

  • FR 9901271 W
  • FR 9807101 A

Abstract (en)

[origin: FR2779360A1] The invention concerns a method which consists in selectively destroying nitrous oxide at high temperature on catalysts consisting of refractory oxide agglomerates (alumina or zirconium) having intergranular porosity impregnated with a zirconium salt. The method is useful for treating gases in workshops producing nitric acid. The invention is also useful, using specific initiators, for treating gases rich in N2O produced in nitric oxidation of organic compounds.

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

B01D 53/86; B01J 21/04; B01J 21/06

IPC 8 full level (invention and additional information)

B01D 53/86 (2006.01); B01J 21/06 (2006.01); C01B 21/02 (2006.01); C01B 21/24 (2006.01)

CPC (invention and additional information)

B01J 21/066 (2013.01); B01D 53/8628 (2013.01); C01B 21/02 (2013.01); C01B 21/24 (2013.01); C01B 21/265 (2013.01); Y02C 20/10 (2013.01); Y02P 20/153 (2015.11)

Citation (search report)

See references of WO 9964139A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

EPO simple patent family

FR 2779360 A1 19991210; FR 2779360 B1 20000908; AU 3833199 A 19991230; BG 104214 A 20000831; BR 9906483 A 20000926; CA 2299562 A1 19991216; CN 1274297 A 20001122; EP 1017478 A1 20000712; HR P20000063 A2 20011231; HU 0100827 A2 20010628; HU 0100827 A3 20030228; IL 134307 D0 20010430; PL 338216 A1 20001009; TR 200000336 T1 20001023; WO 9964139 A1 19991216; ZA 200000838 B 20000913

INPADOC legal status


2003-06-11 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20021203

2000-07-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000128

2000-07-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE