CATALYST FOR REDUCING NITROGEN OXIDES

CATALYST FOR REDUCING NITROGEN OXIDES

The present invention relates to a nitrogen oxide storage catalyst comprising a support body and washcoat layers A, B, C and D, wherein - washcoat layer A is disposed on the support body and contains cerium oxide, an alkaline earth metal compound and/or an alkali metal compound, and also platinum or...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: HOYER, Ruediger, MUELLER, Elena
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
THEIR RELEVANT APPARATUS
TRANSPORTING
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue
container_start_page
container_title
container_volume
creator HOYER, Ruediger
MUELLER, Elena
description The present invention relates to a nitrogen oxide storage catalyst comprising a support body and washcoat layers A, B, C and D, wherein - washcoat layer A is disposed on the support body and contains cerium oxide, an alkaline earth metal compound and/or an alkali metal compound, and also platinum or platinum and palladium in a weight ratio of > 5:1; - washcoat layer B is disposed on washcoat layer A and contains cerium oxide, and also platinum or platinum and palladium in a weight ratio of > 5:1, and is free of alkali metal compounds and compounds of calcium, strontium and barium; - washcoat layer C is disposed on washcoat layer B and comprises cerium oxide-supported palladium or palladium and platinum in a weight ratio of > 2:1, and rhodium; - washcoat layer D is disposed on washcoat layer C and comprises platinum or platinum and palladium; and to a method of converting NOx in exhaust gases from motor vehicles that are operated with lean-burn engines.
format Patent
fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_EP3695902B1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>EP3695902B1</sourcerecordid><originalsourceid>FETCH-epo_espacenet_EP3695902B13</originalsourceid><addsrcrecordid>eNrjZFB1dgxx9IkMDlFw8w9SCHJ1CXX29HNX8PMMCfJ3d_VT8I_wdHEN5mFgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8a4BxmaWppYGRk6GxkQoAQBoCSMJ</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>CATALYST FOR REDUCING NITROGEN OXIDES</title><source>esp@cenet</source><creator>HOYER, Ruediger ; MUELLER, Elena</creator><creatorcontrib>HOYER, Ruediger ; MUELLER, Elena</creatorcontrib><description>The present invention relates to a nitrogen oxide storage catalyst comprising a support body and washcoat layers A, B, C and D, wherein - washcoat layer A is disposed on the support body and contains cerium oxide, an alkaline earth metal compound and/or an alkali metal compound, and also platinum or platinum and palladium in a weight ratio of &gt; 5:1; - washcoat layer B is disposed on washcoat layer A and contains cerium oxide, and also platinum or platinum and palladium in a weight ratio of &gt; 5:1, and is free of alkali metal compounds and compounds of calcium, strontium and barium; - washcoat layer C is disposed on washcoat layer B and comprises cerium oxide-supported palladium or palladium and platinum in a weight ratio of &gt; 2:1, and rhodium; - washcoat layer D is disposed on washcoat layer C and comprises platinum or platinum and palladium; and to a method of converting NOx in exhaust gases from motor vehicles that are operated with lean-burn engines.</description><language>eng ; fre ; ger</language><subject>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; SEPARATION ; THEIR RELEVANT APPARATUS ; TRANSPORTING</subject><creationdate>2021</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20210901&amp;DB=EPODOC&amp;CC=EP&amp;NR=3695902B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76293</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20210901&amp;DB=EPODOC&amp;CC=EP&amp;NR=3695902B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HOYER, Ruediger</creatorcontrib><creatorcontrib>MUELLER, Elena</creatorcontrib><title>CATALYST FOR REDUCING NITROGEN OXIDES</title><description>The present invention relates to a nitrogen oxide storage catalyst comprising a support body and washcoat layers A, B, C and D, wherein - washcoat layer A is disposed on the support body and contains cerium oxide, an alkaline earth metal compound and/or an alkali metal compound, and also platinum or platinum and palladium in a weight ratio of &gt; 5:1; - washcoat layer B is disposed on washcoat layer A and contains cerium oxide, and also platinum or platinum and palladium in a weight ratio of &gt; 5:1, and is free of alkali metal compounds and compounds of calcium, strontium and barium; - washcoat layer C is disposed on washcoat layer B and comprises cerium oxide-supported palladium or palladium and platinum in a weight ratio of &gt; 2:1, and rhodium; - washcoat layer D is disposed on washcoat layer C and comprises platinum or platinum and palladium; and to a method of converting NOx in exhaust gases from motor vehicles that are operated with lean-burn engines.</description><subject>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>SEPARATION</subject><subject>THEIR RELEVANT APPARATUS</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2021</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFB1dgxx9IkMDlFw8w9SCHJ1CXX29HNX8PMMCfJ3d_VT8I_wdHEN5mFgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8a4BxmaWppYGRk6GxkQoAQBoCSMJ</recordid><startdate>20210901</startdate><enddate>20210901</enddate><creator>HOYER, Ruediger</creator><creator>MUELLER, Elena</creator><scope>EVB</scope></search><sort><creationdate>20210901</creationdate><title>CATALYST FOR REDUCING NITROGEN OXIDES</title><author>HOYER, Ruediger ; MUELLER, Elena</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP3695902B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2021</creationdate><topic>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>SEPARATION</topic><topic>THEIR RELEVANT APPARATUS</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>HOYER, Ruediger</creatorcontrib><creatorcontrib>MUELLER, Elena</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>HOYER, Ruediger</au><au>MUELLER, Elena</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>CATALYST FOR REDUCING NITROGEN OXIDES</title><date>2021-09-01</date><risdate>2021</risdate><abstract>The present invention relates to a nitrogen oxide storage catalyst comprising a support body and washcoat layers A, B, C and D, wherein - washcoat layer A is disposed on the support body and contains cerium oxide, an alkaline earth metal compound and/or an alkali metal compound, and also platinum or platinum and palladium in a weight ratio of &gt; 5:1; - washcoat layer B is disposed on washcoat layer A and contains cerium oxide, and also platinum or platinum and palladium in a weight ratio of &gt; 5:1, and is free of alkali metal compounds and compounds of calcium, strontium and barium; - washcoat layer C is disposed on washcoat layer B and comprises cerium oxide-supported palladium or palladium and platinum in a weight ratio of &gt; 2:1, and rhodium; - washcoat layer D is disposed on washcoat layer C and comprises platinum or platinum and palladium; and to a method of converting NOx in exhaust gases from motor vehicles that are operated with lean-burn engines.</abstract><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language eng ; fre ; ger
recordid cdi_epo_espacenet_EP3695902B1
source esp@cenet
subjects CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
THEIR RELEVANT APPARATUS
TRANSPORTING
title CATALYST FOR REDUCING NITROGEN OXIDES
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-24T02%3A06%3A03IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=HOYER,%20Ruediger&rft.date=2021-09-01&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EEP3695902B1%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true