| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ac93f643b44e958763fd1234fe359e3f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ef9bd1ef0e5ef5a700a378eb78f7caea
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f5ac4493e7295eac08235a6c901f1bc8 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02T10-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S502-512
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S502-506 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-0203
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-945 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-94
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-02 |
| filingDate |
1991-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_982ffbb3ffee1f3bda4568f3fc49261f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3b44590dd5f6bb530a5db58bb81c0b7f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fa67ccd7dba41e663ab093c1f05d1481 |
| publicationDate |
1992-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0488514-A1 |
| titleOfInvention |
A method of making a catalyst for use in automotive exhaust gas treatment |
| abstract |
A method of making a three-way catalyst based on platinum group metals, comprising: (a) impregnating an alumina substrate with a platinum group metal ion by contacting such substrate with an aqueous solution containing the platinum group metal in an amount of 0.1-5% by weight of alumina substrate and a water soluble acid that forms RCOOH with R being an alkyl or equivalent, said acid being present in an amount of 10-120% by weight of the alumina substrate, the pH of said solution being less than 4.0; and (b) drying and calcining the wetted substrate without sintering said substrate. The three-way catalyst construction based on platinum group metals has enhanced catalytic activity. It comprises an alumina substrate and a platinum group metal impregnation layer thereover, said impregnation layer being comprised of raft-like particle structures, each having increased metal density resulting from the nesting of both small and large metal particles within a given volume. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2767722-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/AU-662549-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2767721-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6288295-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0532117-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0532116-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0532118-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2744652-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6197721-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0537815-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0899013-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0899012-A1 |
| priorityDate |
1990-11-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |