\nDepart\u00adment of Chem\u00adi\u00adcal and Bio\u00admol\u00ade\u00adc\u00adu\u00adlar Engi\u00adneer\u00ading
\nUni\u00adver\u00adsi\u00adty of Delaware <\/em>
\n
![\"Bahar](\"http:\/\/catalysisclubphilly.org\/awe9a91v\/uploads\/2015\/02\/Ipek_Bahar.jpg\")
<\/a>\nAbstract<\/strong>
\nMethan\u00adotroph\u00adic bac\u00adte\u00adria con\u00adtain\u00ading par\u00adtic\u00adu\u00adlar methane monooxy\u00adge\u00adnase (pMMO), a Cu-con\u00adtain\u00ading enzyme, or sol\u00adu\u00adble methane monooxy\u00adge\u00adnase (sMMO), an iron-met\u00adal\u00adloen\u00adzyme can oxi\u00addize methane to methanol selec\u00adtive\u00adly at ambi\u00adent con\u00addi\u00adtions 1. The zeo\u00adlite Cu-ZSM-5 was report\u00aded to acti\u00advate the methane C-H bond\u2014with a homolyt\u00adic bond dis\u00adso\u00adci\u00ada\u00adtion ener\u00adgy of 104 kcal\/mol\u2014 at tem\u00adper\u00ada\u00adtures as low as 120 \u00b0C 2 after pre\u00adtreat\u00adment in O2 3. The reac\u00adtive cop\u00adper species are believed to con\u00adtain extra-lat\u00adtice oxy\u00adgen, and in the case of Cu-ZSM-5, to be a mono-\u03bc-oxo-dicop\u00adper com\u00adplex ([Cu\u2014O\u2014Cu]2+) 4. Although a cor\u00adre\u00adla\u00adtion was found between the con\u00adcen\u00adtra\u00adtion of mono-\u03bc-oxo-dicop\u00adper species and the amount of methanol pro\u00adduced by Cu-ZSM-5 5, no such cor\u00adre\u00adla\u00adtion was found for oth\u00ader zeo\u00adlites that pro\u00adduce methanol such as Cu-mor\u00adden\u00adite and Cu-fer\u00adrierite 2. We have recent\u00adly showed methanol pro\u00adduc\u00adtion on cop\u00adper (II) exchanged small pore zeo\u00adlites includ\u00ading SSZ-13 (CHA), SSZ-16 (AFX) and SSZ-39 (AEI) with yields as high as 39 \u03bcmol CH3OH\/g and CH3OH\/Cu ratios up to 0.09 (the largest report\u00aded to date).6 Here, cop\u00adper species in these small pore zeo\u00adlites were inves\u00adti\u00adgat\u00aded with UV\u2013vis and Raman spec\u00adtroscopy after O2-treat\u00adment at a tem\u00adper\u00ada\u00adture of 450 \u00b0C. No evi\u00addence of mono-\u03bc-oxo-dicop\u00adper species was found in the spec\u00adtra of Cu-SSZ-13,Cu-SSZ-16 and Cu-SSZ-39 6, how\u00adev\u00ader Cu\u2014Oextralattice vibra\u00adtions at 574 cm-1 were detect\u00aded in Raman spec\u00adtra of Cu-SSZ-13 and Cu-SSZ-39 zeo\u00adlites which is indica\u00adtive of a dif\u00adfer\u00adent Cux\u00adOy active species respon\u00adsi\u00adble for methanol pro\u00adduc\u00adtion in small pore zeo\u00adlites.<\/p>\n
Ref\u00ader\u00adences <\/strong> Meet\u00ading Pro\u00adgram \u2014 Feb\u00adru\u00adary 2015 Bahar Ipek Depart\u00adment of Chem\u00adi\u00adcal and Bio\u00admol\u00ade\u00adc\u00adu\u00adlar Engi\u00adneer\u00ading Uni\u00adver\u00adsi\u00adty of Delaware Abstract Methan\u00adotroph\u00adic bac\u00adte\u00adria con\u00adtain\u00ading par\u00adtic\u00adu\u00adlar methane monooxy\u00adge\u00adnase (pMMO), a Cu-con\u00ad\u00adtain\u00ading enzyme, or sol\u00adu\u00adble methane monooxy\u00adge\u00adnase (sMMO), an iron-met\u00adal\u00adloen\u00adzyme can oxi\u00addize methane to methanol selec\u00adtive\u00adly at ambi\u00adent con\u00addi\u00adtions 1. The zeo\u00adlite Cu-ZSM-5 was report\u00aded to acti\u00advate the methane C-H bond\u2014with [\u2026]<\/p>\n","protected":false},"author":6,"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-4199","post","type-post","status-publish","format-standard","hentry","category-abstracts"],"_links":{"self":[{"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/posts\/4199","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\/6"}],"replies":[{"embeddable":true,"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/comments?post=4199"}],"version-history":[{"count":3,"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/posts\/4199\/revisions"}],"predecessor-version":[{"id":4203,"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/posts\/4199\/revisions\/4203"}],"wp:attachment":[{"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/media?parent=4199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/categories?post=4199"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/tags?post=4199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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\nxx-xx.<\/p>\n","protected":false},"excerpt":{"rendered":"