{"id":4964,"date":"2018-04-15T21:37:16","date_gmt":"2018-04-16T01:37:16","guid":{"rendered":"http:\/\/catalysisclubphilly.org\/?p=4964"},"modified":"2018-04-15T21:38:06","modified_gmt":"2018-04-16T01:38:06","slug":"low-temperature-nox-storage-zeolite-supported-pd-low-temperature-diesel-engine-emission-control","status":"publish","type":"post","link":"http:\/\/catalysisclubphilly.org\/awe9a91v\/abstracts\/low-temperature-nox-storage-zeolite-supported-pd-low-temperature-diesel-engine-emission-control\/","title":{"rendered":"Low temperature NO<sub>x<\/sub> storage on zeolite supported Pd for low temperature diesel engine emission control"},"content":{"rendered":"<h3>2018 Spring Symposium<\/h3>\n<p><strong>L. Man\u00adtaro\u015fie<\/strong><sup>1<\/sup>, H.Y. Chen<sup>2<\/sup>, J. Col\u00adlier<sup>1<\/sup>, D. Liu<sup>2<\/sup>, D. Duran-Mar\u00adtin<sup>1<\/sup>, V. Novak<sup>1<\/sup>, R. R. Rajaram<sup>1<\/sup> and D. Thompsett<sup>1<\/sup><br>\n<sup>1<\/sup><em>John\u00adson Matthey Tech\u00adnol\u00ado\u00adgy Cen\u00adtre, Son\u00adning Com\u00admon, Read\u00ading, RG4 9NH, UK<\/em><br>\n<sup>2<\/sup><em>John\u00adson Matthey Inc., Emis\u00adsion Con\u00adtrol Tech\u00adnol\u00ado\u00adgy, Wayne, PA 19087, USA<\/em><\/p>\n<p><strong>Abstract<\/strong> \u2014 Recent leg\u00adis\u00adla\u00adtion require\u00adments have turned con\u00adtrol\u00adling NO<sub>x<\/sub> emis\u00adsions into one of the biggest tech\u00adni\u00adcal chal\u00adlenges fac\u00ading car man\u00adu\u00adfac\u00adtur\u00aders [1]. At present, the main tech\u00adnolo\u00adgies avail\u00adable for this appli\u00adca\u00adtion are NO x stor\u00adage and reduc\u00adtion (NSR) or urea based selec\u00adtive cat\u00adalyt\u00adic reduc\u00adtion (SCR) [2,3]. Both tech\u00adnolo\u00adgies can achieve high NO x reduc\u00adtion effi\u00adcien\u00adcies once they reach their oper\u00adat\u00ading tem\u00adper\u00ada\u00adture (typ\u00adi\u00adcal\u00adly 200\u00b0C or high\u00ader). Dur\u00ading cold start, when the exhaust tem\u00adper\u00ada\u00adture is below 200\u00b0C, both sys\u00adtems are less effi\u00adcient at NO<sub>x<\/sub> removal.<\/p>\n<p>To meet the NO<sub>x<\/sub> emis\u00adsion stan\u00addards dur\u00ading the cold start (200\u00b0C) a new con\u00adcept has been intro\u00adduced: pas\u00adsive NO<sub>x<\/sub> adsor\u00adbers (PNA) [4]. These are mate\u00adri\u00adals which store NO<sub>x<\/sub> (main\u00adly as NO) at low tem\u00adper\u00ada\u00adtures and then ther\u00admal\u00adly release the stored NO<sub>x<\/sub> once the down\u00adstream NO<sub>x<\/sub> reduc\u00adtion cat\u00ada\u00adlyst (NSR or SCR) reach\u00ades its oper\u00adat\u00ading tem\u00adper\u00ada\u00adture.<\/p>\n<p>This con\u00adtri\u00adbu\u00adtion will report the remark\u00adable abil\u00adi\u00adty of zeo\u00adlite sup\u00adport\u00aded Pd to store NO with very high trap\u00adping effi\u00adcien\u00adcy at tem\u00adper\u00ada\u00adtures below 200\u00b0C and con\u00addi\u00adtions that sim\u00adu\u00adlate real exhaust from diesel engines. The study will focus on the char\u00adac\u00adter\u00adi\u00adza\u00adtion of the Pd stor\u00adage sites on zeo\u00adlites com\u00adpared to oxide sup\u00adports and under\u00adstand\u00ading unique nature of the active species in these mate\u00adri\u00adals. The prop\u00ader\u00adties of pal\u00adla\u00addi\u00adum sup\u00adport\u00aded on three dif\u00adfer\u00adent zeo\u00adlites of var\u00adi\u00adous pore sizes (CHA, MFI and BETA) will be com\u00adpared to clas\u00adsi\u00adcal oxid\u00adic sup\u00adports (Al<sub>2<\/sub>O<sub>3<\/sub> and CeO<sub>2<\/sub>).<\/p>\n<p>Also, with the aim of pro\u00advid\u00ading insight into the behav\u00adiour of these mate\u00adri\u00adals dur\u00ading engine oper\u00ada\u00adtion, the evo\u00adlu\u00adtion of the NO stor\u00adage sites under var\u00adi\u00adous gas feed com\u00adpo\u00adsi\u00adtions has been probed through com\u00adbined \u201c<em>operan\u00addo<\/em>\u201d IR and XAS exper\u00adi\u00adments. The find\u00adings of these study will be dis\u00adcussed in rela\u00adtion to the real\u00adis\u00adtic oper\u00ada\u00adtion of the nov\u00adel PNA tech\u00adnol\u00ado\u00adgy.<\/p>\n<p><strong>Ref\u00ader\u00adences<\/strong>:<br>\n[1] L. Yang, V. Fran\u00adco, A. Campestri\u00adni, J. Ger\u00adman, P. Mock, <em>ICCT report on NOX con\u00adtrol tech\u00adnolo\u00adgies for Euro 6 Diesel pas\u00adsen\u00adger cars<\/em>, <strong>2015<\/strong><br>\n[2] W.S. Epling, L.E. Camp\u00adbell, A. Yez\u00aderets, N.W. Cur\u00adri\u00ader, J. E. Parks II, <em>Catal\u00ady\u00adsis Reviews<\/em>, 163 (<strong>2004<\/strong>) 46.<br>\n[3] I. Nova, E. Tron\u00adconi (Eds.) <em>Urea-SCR Tech\u00adnol\u00ado\u00adgy for deNO<sub>x<\/sub> After Treat\u00adment of Diesel Exhausts<\/em>, Springer New York, <strong>2014<\/strong>.<br>\n[4] E. Melville, R.J. Bris\u00adley, O. Keane, P.R. Phillips, and E.H. Mountstevens, <em>US patent<\/em> 8, 105, 559, <strong>2007<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>2018 Spring Sym\u00adpo\u00adsium L. Man\u00adtaro\u015fie1, H.Y. Chen2, J. Col\u00adlier1, D. Liu2, D. Duran-Mar\u00adt\u00adin1, V. Novak1, R. R. Rajaram1 and D. Thompsett1 1John\u00adson Matthey Tech\u00adnol\u00ado\u00adgy Cen\u00adtre, Son\u00adning Com\u00admon, Read\u00ading, RG4 9NH, UK 2John\u00adson Matthey Inc., Emis\u00adsion Con\u00adtrol Tech\u00adnol\u00ado\u00adgy, Wayne, PA 19087, USA Abstract \u2014 Recent leg\u00adis\u00adla\u00adtion require\u00adments have turned con\u00adtrol\u00adling NOx emis\u00adsions into one of the [\u2026]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[15,8],"tags":[],"class_list":["post-4964","post","type-post","status-publish","format-standard","hentry","category-abstracts","category-news"],"_links":{"self":[{"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/posts\/4964","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/comments?post=4964"}],"version-history":[{"count":2,"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/posts\/4964\/revisions"}],"predecessor-version":[{"id":4967,"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/posts\/4964\/revisions\/4967"}],"wp:attachment":[{"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/media?parent=4964"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/categories?post=4964"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/tags?post=4964"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}