EXHAUST GAS PURIFICATION CATALYST
PROBLEM TO BE SOLVED: To provide an exhaust gas purification catalyst having improved NOpurification ability, capable of generating actively a catalytic reaction even in an exhaust gas downstream part of a catalyst layer.SOLUTION: An exhaust gas purification catalyst in which a catalyst layer contai...
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| creator | SUZUKI HIROMASA FUJIWARA TAKAHIKO AOKI HISAO YABUSAKI YUJI CHINZEI ISAO |
| description | PROBLEM TO BE SOLVED: To provide an exhaust gas purification catalyst having improved NOpurification ability, capable of generating actively a catalytic reaction even in an exhaust gas downstream part of a catalyst layer.SOLUTION: An exhaust gas purification catalyst in which a catalyst layer containing at least one kind of Pd and Pt is formed on a substrate 1 includes an OSC material which is an inorganic material having oxygen storage ability and having a pyrochlore type structure, and an OSC material having higher oxygen storage speed than the OSC material having the pyrochlore type structure, on a catalytic layer front stage 21 within the range of a length of 50% or less of the full length of the catalytic layer from the exhaust gas upstream side end 2a of the catalytic layer 2.
【課題】触媒層の排ガス下流部においても触媒反応を活発に起こす、NOx浄化能が向上した排ガス浄化触媒を提供する。【解決手段】Pd及びPtの少なくとも１種を含む触媒層が基材１上に形成された排ガス浄化触媒であって、触媒層２の排ガス上流側端部２ａから触媒層の全長の50%以下の長さの範囲内である触媒層前段２１に、パイロクロア型構造を有する酸素吸蔵能を有する無機材料であるOSC材及びパイロクロア型構造を有するOSC材よりも酸素吸蔵速度が速いOSC材を含む、排ガス浄化触媒。【選択図】図１ |
| format | Patent |
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【課題】触媒層の排ガス下流部においても触媒反応を活発に起こす、NOx浄化能が向上した排ガス浄化触媒を提供する。【解決手段】Pd及びPtの少なくとも１種を含む触媒層が基材１上に形成された排ガス浄化触媒であって、触媒層２の排ガス上流側端部２ａから触媒層の全長の50%以下の長さの範囲内である触媒層前段２１に、パイロクロア型構造を有する酸素吸蔵能を有する無機材料であるOSC材及びパイロクロア型構造を有するOSC材よりも酸素吸蔵速度が速いOSC材を含む、排ガス浄化触媒。【選択図】図１</description><language>eng ; jpn</language><subject>BLASTING ; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ; ENGINE PLANTS IN GENERAL ; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES ; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL ; HEATING ; LIGHTING ; MACHINES OR ENGINES IN GENERAL ; MECHANICAL ENGINEERING ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; SEPARATION ; STEAM ENGINES ; THEIR RELEVANT APPARATUS ; TRANSPORTING ; WEAPONS</subject><creationdate>2015</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&date=20150518&DB=EPODOC&CC=JP&NR=2015093267A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20150518&DB=EPODOC&CC=JP&NR=2015093267A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SUZUKI HIROMASA</creatorcontrib><creatorcontrib>FUJIWARA TAKAHIKO</creatorcontrib><creatorcontrib>AOKI HISAO</creatorcontrib><creatorcontrib>YABUSAKI YUJI</creatorcontrib><creatorcontrib>CHINZEI ISAO</creatorcontrib><title>EXHAUST GAS PURIFICATION CATALYST</title><description>PROBLEM TO BE SOLVED: To provide an exhaust gas purification catalyst having improved NOpurification ability, capable of generating actively a catalytic reaction even in an exhaust gas downstream part of a catalyst layer.SOLUTION: An exhaust gas purification catalyst in which a catalyst layer containing at least one kind of Pd and Pt is formed on a substrate 1 includes an OSC material which is an inorganic material having oxygen storage ability and having a pyrochlore type structure, and an OSC material having higher oxygen storage speed than the OSC material having the pyrochlore type structure, on a catalytic layer front stage 21 within the range of a length of 50% or less of the full length of the catalytic layer from the exhaust gas upstream side end 2a of the catalytic layer 2.
【課題】触媒層の排ガス下流部においても触媒反応を活発に起こす、NOx浄化能が向上した排ガス浄化触媒を提供する。【解決手段】Pd及びPtの少なくとも１種を含む触媒層が基材１上に形成された排ガス浄化触媒であって、触媒層２の排ガス上流側端部２ａから触媒層の全長の50%以下の長さの範囲内である触媒層前段２１に、パイロクロア型構造を有する酸素吸蔵能を有する無機材料であるOSC材及びパイロクロア型構造を有するOSC材よりも酸素吸蔵速度が速いOSC材を含む、排ガス浄化触媒。【選択図】図１</description><subject>BLASTING</subject><subject>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</subject><subject>ENGINE PLANTS IN GENERAL</subject><subject>GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES</subject><subject>GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MACHINES OR ENGINES IN GENERAL</subject><subject>MECHANICAL ENGINEERING</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>SEPARATION</subject><subject>STEAM ENGINES</subject><subject>THEIR RELEVANT APPARATUS</subject><subject>TRANSPORTING</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2015</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFB0jfBwDA0OUXB3DFYICA3ydPN0dgzx9PdTAFKOPpHBITwMrGmJOcWpvFCam0HJzTXE2UM3tSA_PrW4IDE5NS-1JN4rwMjA0NTA0tjIzNzRmChFAGxwItE</recordid><startdate>20150518</startdate><enddate>20150518</enddate><creator>SUZUKI HIROMASA</creator><creator>FUJIWARA TAKAHIKO</creator><creator>AOKI HISAO</creator><creator>YABUSAKI YUJI</creator><creator>CHINZEI ISAO</creator><scope>EVB</scope></search><sort><creationdate>20150518</creationdate><title>EXHAUST GAS PURIFICATION CATALYST</title><author>SUZUKI HIROMASA ; FUJIWARA TAKAHIKO ; AOKI HISAO ; YABUSAKI YUJI ; CHINZEI ISAO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2015093267A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2015</creationdate><topic>BLASTING</topic><topic>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</topic><topic>ENGINE PLANTS IN GENERAL</topic><topic>GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES</topic><topic>GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MACHINES OR ENGINES IN GENERAL</topic><topic>MECHANICAL ENGINEERING</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>SEPARATION</topic><topic>STEAM ENGINES</topic><topic>THEIR RELEVANT APPARATUS</topic><topic>TRANSPORTING</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>SUZUKI HIROMASA</creatorcontrib><creatorcontrib>FUJIWARA TAKAHIKO</creatorcontrib><creatorcontrib>AOKI HISAO</creatorcontrib><creatorcontrib>YABUSAKI YUJI</creatorcontrib><creatorcontrib>CHINZEI ISAO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SUZUKI HIROMASA</au><au>FUJIWARA TAKAHIKO</au><au>AOKI HISAO</au><au>YABUSAKI YUJI</au><au>CHINZEI ISAO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>EXHAUST GAS PURIFICATION CATALYST</title><date>2015-05-18</date><risdate>2015</risdate><abstract>PROBLEM TO BE SOLVED: To provide an exhaust gas purification catalyst having improved NOpurification ability, capable of generating actively a catalytic reaction even in an exhaust gas downstream part of a catalyst layer.SOLUTION: An exhaust gas purification catalyst in which a catalyst layer containing at least one kind of Pd and Pt is formed on a substrate 1 includes an OSC material which is an inorganic material having oxygen storage ability and having a pyrochlore type structure, and an OSC material having higher oxygen storage speed than the OSC material having the pyrochlore type structure, on a catalytic layer front stage 21 within the range of a length of 50% or less of the full length of the catalytic layer from the exhaust gas upstream side end 2a of the catalytic layer 2.
【課題】触媒層の排ガス下流部においても触媒反応を活発に起こす、NOx浄化能が向上した排ガス浄化触媒を提供する。【解決手段】Pd及びPtの少なくとも１種を含む触媒層が基材１上に形成された排ガス浄化触媒であって、触媒層２の排ガス上流側端部２ａから触媒層の全長の50%以下の長さの範囲内である触媒層前段２１に、パイロクロア型構造を有する酸素吸蔵能を有する無機材料であるOSC材及びパイロクロア型構造を有するOSC材よりも酸素吸蔵速度が速いOSC材を含む、排ガス浄化触媒。【選択図】図１</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES THEIR RELEVANT APPARATUS TRANSPORTING WEAPONS |
| title | EXHAUST GAS PURIFICATION CATALYST |
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