EP 1206312 B8 20090225 - CATALYTIC TRAP WITH POTASSIUM COMPONENT AND METHOD OF USING THE SAME
Title (en)
CATALYTIC TRAP WITH POTASSIUM COMPONENT AND METHOD OF USING THE SAME
Title (de)
KALIUM ENTHALTENDE KATALYTISCHE FALLE UND VERFAHREN ZU IHRER HERSTELLUNG UND IHRER VERWENDUNG
Title (fr)
PIEGE CATALYTIQUE A COMPOSANT AU POTASSIUM ET PROCEDE D'UTILISATION
Publication
Application
Priority
- US 0022968 W 20000822
- US 37881399 A 19990823
Abstract (en)
[origin: WO0114046A9] A catalytic trap effective for conversion of NOx in an exhaust gas stream is inert to high-temperature reaction with basic oxygenated compounds of lithium, sodium or potassium. The catalytic trap may be substantially free of silica components and may include a catalytic trap material which contains a refractory metal oxide support, e.g., alumina, having dispersed thereon a catalytic component, such as a platinum group metal catalytic component, and an NOx sorbent comprised of one or more of the basic oxygenated compounds. The catalytic trap material is coated onto a suitable carrier member, such as one made from stainless steel, titanium, alumina, titania, zirconia or silica-leached cordierite. A method of treating an NOx-containing gas stream involves maintaining the gas stream in alternating periods of (1) lean and (2) rich or stoichiometric conditions and contacting the gas stream with the catalytic trap under conditions in which NOx is adsorbed during periods of lean operation and released and reduced to nitrogen during periods of rich operation.
IPC 8 full level
B01D 53/94 (2006.01); B01J 23/58 (2006.01); B01J 23/63 (2006.01); B01J 35/04 (2006.01); B01J 37/02 (2006.01); F01N 3/08 (2006.01); F01N 3/28 (2006.01)
CPC (source: EP KR)
B01D 53/94 (2013.01 - KR); B01D 53/9422 (2013.01 - EP); B01J 23/63 (2013.01 - EP); B01J 37/0242 (2013.01 - EP); B01J 37/0244 (2013.01 - EP); B01J 37/0248 (2013.01 - EP); F01N 3/0814 (2013.01 - EP); F01N 3/0842 (2013.01 - EP); B01D 2255/1021 (2013.01 - EP); B01D 2255/1023 (2013.01 - EP); B01D 2255/1025 (2013.01 - EP); B01D 2255/202 (2013.01 - EP); B01D 2255/204 (2013.01 - EP); B01D 2255/2063 (2013.01 - EP); B01D 2255/2065 (2013.01 - EP); B01D 2255/20715 (2013.01 - EP); B01D 2258/012 (2013.01 - EP); F01N 2330/00 (2013.01 - EP); F01N 2330/06 (2013.01 - EP)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0114046 A1 20010301; WO 0114046 A9 20020912; AT E411097 T1 20081015; AU 6795300 A 20010319; BR 0013516 A 20030715; DE 60040545 D1 20081127; EP 1206312 A1 20020522; EP 1206312 B1 20081015; EP 1206312 B8 20090225; JP 2003507177 A 20030225; JP 2013176774 A 20130909; JP 5490342 B2 20140514; KR 100755628 B1 20070904; KR 20020026597 A 20020410
DOCDB simple family (application)
US 0022968 W 20000822; AT 00955812 T 20000822; AU 6795300 A 20000822; BR 0013516 A 20000822; DE 60040545 T 20000822; EP 00955812 A 20000822; JP 2001518175 A 20000822; JP 2013124677 A 20130613; KR 20027002345 A 20020222