| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6cc95d8834fc116503e8fdffa4094da3 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2255-1025
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2255-1023
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2255-1021
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2255-204
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2255-908
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02T10-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2255-91 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-63
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-9422
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-92
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-58 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01N3-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01N3-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01N3-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01N3-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01N3-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-94
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-92
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F02D41-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-63 |
| filingDate |
1998-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
1999-08-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0927571-A3 |
| titleOfInvention |
Method for treating exhaust gases from an internal combustion engine using platinum/alumina nitrogen oxide absorbents |
| abstract |
The invention is a method of treating exhaustngases generated by an internal combustion engine, bynlocating a nitrogen oxide trap in the exhaust gas passagenand cycling the air/fuel ratio of the exhaust gases enteringnthe trap between lean and rich, such that the trap absorbsnnitrogen oxides during the lean cycle and desorbs thennitrogen oxides during the rich cycle. The trap consistsnessentially of: (a) a porous support material comprisingnmostly γ-alumina and (b) precious metal comprising at leastn0.5 to 4 wt. % platinum deposited on the support, the amountnof the platinum being based on the weight of said supportnmaterial. The desorbed nitrogen oxides may be converted overnthe precious metal to N 2 and O 2 by reductants likenhydrocarbons present in the exhaust gas. |
| priorityDate |
1997-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |