(i) We show that the appar\u00adent effects of pro\u00adton den\u00adsi\u00adty and of hydrox\u00adyl group envi\u00adron\u00adment on DME car\u00adbony\u00adla\u00adtion turnover rates reflect instead the remark\u00adable speci\u00adfici\u00adty of eight-mem\u00adbered ring zeo\u00adlite chan\u00adnels in accel\u00ader\u00adat\u00ading kinet\u00adi\u00adcal\u00adly rel\u00ade\u00advant *CH3-CO reac\u00adtion steps.<\/p>\n (ii) In zeo\u00adlite pores large enough to accom\u00admo\u00addate ethanol dimers, ethanol pref\u00ader\u00aden\u00adtial\u00adly dehy\u00addrates via a bimol\u00ade\u00adc\u00adu\u00adlar path\u00adway to gen\u00ader\u00adate diethyl ether since the for\u00adma\u00adtion of ethanol dimer\u00adic species is ener\u00adget\u00adi\u00adcal\u00adly more favor\u00adable than the for\u00adma\u00adtion of ethanol monomers. In zeo\u00adlite chan\u00adnels too small to accom\u00admo\u00addate ethanol dimers, ethanol is selec\u00adtive\u00adly dehy\u00addrat\u00aded via a uni\u00admol\u00ade\u00adc\u00adu\u00adlar reac\u00adtion path\u00adway to gen\u00ader\u00adate eth\u00adyl\u00adene.<\/p>\n (iii) For iso\u00admer\u00adiza\u00adtion reac\u00adtions of n-hexa\u00adne, 8-MR chan\u00adnels of H-MOR min\u00adi\u00admize the free ener\u00adgy of required car\u00adbo\u00adca\u00adtion\u00adic tran\u00adsi\u00adtion states, pos\u00adsi\u00adbly via par\u00adtial con\u00adfine\u00adment effects that increase the entropy of the tran\u00adsi\u00adtion state at the expense of the reac\u00adtion enthalpy. These find\u00adings show that con\u00adfine\u00adment in zeo\u00adlite chan\u00adnels influ\u00adences rate and selec\u00adtiv\u00adi\u00adty of hydro\u00adcar\u00adbon reac\u00adtions more fun\u00adda\u00admen\u00adtal\u00adly than sim\u00adple con\u00adsid\u00ader\u00ada\u00adtions of size and shape. 2011 Spring Sym\u00adpo\u00adsium Aditya Bhan Depart\u00adment of Chem\u00adi\u00adcal Engi\u00adneer\u00ading and Mate\u00adri\u00adals Sci\u00adence Uni\u00adver\u00adsi\u00adty of Min\u00adneso\u00adta Twin Cities Abstract \u2014 Zeo\u00adlites are crys\u00adtalline inor\u00adgan\u00adic frame\u00adwork oxides with chan\u00adnel and pock\u00adet dimen\u00adsions typ\u00adi\u00adcal\u00adly small\u00ader than 1 nanome\u00adter. Their con\u00adstrained envi\u00adron\u00adments are well known to select for chem\u00adi\u00adcal reac\u00adtions via steric mech\u00ada\u00adnisms, typ\u00adi\u00adcal\u00adly, by exclu\u00adsion of mol\u00ade\u00adcules or [\u2026]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[15],"tags":[],"class_list":["post-2349","post","type-post","status-publish","format-standard","hentry","category-abstracts"],"_links":{"self":[{"href":"https:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/posts\/2349","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/comments?post=2349"}],"version-history":[{"count":5,"href":"https:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/posts\/2349\/revisions"}],"predecessor-version":[{"id":2428,"href":"https:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/posts\/2349\/revisions\/2428"}],"wp:attachment":[{"href":"https:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/media?parent=2349"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/categories?post=2349"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/tags?post=2349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nAditya Bhan<\/strong>
\nDepart\u00adment of Chem\u00adi\u00adcal Engi\u00adneer\u00ading and Mate\u00adri\u00adals Sci\u00adence
\nUni\u00adver\u00adsi\u00adty of Min\u00adneso\u00adta
\nTwin Cities<\/em>
\n
\nAbstract<\/strong> \u2014 Zeo\u00adlites are crys\u00adtalline inor\u00adgan\u00adic frame\u00adwork oxides with chan\u00adnel and pock\u00adet dimen\u00adsions typ\u00adi\u00adcal\u00adly small\u00ader than 1 nanome\u00adter. Their con\u00adstrained envi\u00adron\u00adments are well known to select for chem\u00adi\u00adcal reac\u00adtions via steric mech\u00ada\u00adnisms, typ\u00adi\u00adcal\u00adly, by exclu\u00adsion of mol\u00ade\u00adcules or tran\u00adsi\u00adtion states based on size. The strong effects of pore size and shape as they become com\u00admen\u00adsu\u00adrate with those of reac\u00adtant species and the con\u00adcomi\u00adtant effects on the enthalpy and entropy of adsorp\u00adtion have also been broad\u00adly and con\u00advinc\u00ading\u00adly not\u00aded. We inquire instead, what are the effects of con\u00adfine\u00adment in small chan\u00adnels? In this talk, I will present three exam\u00adples where reac\u00adtiv\u00adi\u00adty in small 8-mem\u00adbered ring pock\u00adets of H-MOR dif\u00adfers from that in larg\u00ader 12-mem\u00adbered ring chan\u00adnels of MOR.<\/p>\n
\n
\nSpeaker\u2019s Biog\u00adra\u00adphy<\/strong> \u2013 Aditya Bhan received his Bach\u00ade\u00adlor of Tech\u00adnol\u00ado\u00adgy (B. Tech.) in Chem\u00adi\u00adcal Engi\u00adneer\u00ading from IIT Kan\u00adpur in 2000. Sub\u00adse\u00adquent\u00adly, he moved to West Lafayette, Indi\u00adana and joined the group of Nick Del\u00adgass at Pur\u00addue, where he devel\u00adoped micro\u00adki\u00adnet\u00adic mod\u00adels to describe propane arom\u00ada\u00adti\u00adza\u00adtion on pro\u00adton- and gal\u00adli\u00adum- form ZSM-5 mate\u00adri\u00adals for his PhD. In 2005, he moved to the Uni\u00adver\u00adsi\u00adty of Cal\u00adi\u00adfor\u00adnia at Berke\u00adley to pur\u00adsue post-doc\u00adtor\u00adal stud\u00adies in Pro\u00adfes\u00adsor Enrique Iglesia\u2019s group to study the kinet\u00adics, mech\u00ada\u00adnism, and site require\u00adments of dimethyl ether car\u00adbony\u00adla\u00adtion. In Sep\u00adtem\u00adber 2007, Dr. Bhan took up his present posi\u00adtion as an Assis\u00adtant Pro\u00adfes\u00adsor in the Depart\u00adment of Chem\u00adi\u00adcal Engi\u00adneer\u00ading and Mate\u00adri\u00adals Sci\u00adence at the Uni\u00adver\u00adsi\u00adty of Min\u00adneso\u00adta. Dr. Bhan leads a research group that focus\u00ades on the struc\u00adtur\u00adal and mech\u00ada\u00adnis\u00adtic char\u00adac\u00adter\u00adi\u00adza\u00adtion of inor\u00adgan\u00adic mol\u00ade\u00adc\u00adu\u00adlar sieve cat\u00ada\u00adlysts use\u00adful in ener\u00adgy con\u00adver\u00adsion and petro\u00adchem\u00adi\u00adcal syn\u00adthe\u00adsis. His research at Min\u00adneso\u00adta has been rec\u00adog\u00adnized with the McK\u00adnight Land Grant Pro\u00adfes\u00adsor and 3M Non-tenured Fac\u00adul\u00adty awards.<\/p>\n","protected":false},"excerpt":{"rendered":"