Development of [60] fullerene supported on silica catalysts for the photo-oxidation of alkenes

Απλή σελίδα τεκμηρίου
dc.contributor.authorPanagiotou, G. D.en
dc.contributor.authorTzirakis, M. D.en
dc.contributor.authorVakros, J.en
dc.contributor.authorLoukatzikou, L.en
dc.contributor.authorOrfanopoulos, M.en
dc.contributor.authorKordulis, C.en
dc.contributor.authorLycourghiotis, A.en
dc.date.accessioned2015-11-24T16:55:54Z
dc.date.available2015-11-24T16:55:54Z
dc.identifier.issn0926-860X-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/10367
dc.rightsDefault Licence-
dc.subjectc(60)en
dc.subjectphotocatalysisen
dc.subjectsinglet oxygenen
dc.subjectphoto-oxidationen
dc.subjectdrsen
dc.subjectsupported catalystsen
dc.subjectsupported c(60)en
dc.subjectphotoluminescenceen
dc.subjecttgaen
dc.subjectene reactionen
dc.subjectsio(2)en
dc.subjectpotentiometric mass titrationsen
dc.subjectsinglet oxygenen
dc.subjectgamma-aluminaen
dc.subjectvisible photoluminescenceen
dc.subjectphotophysical propertiesen
dc.subjectoptical-propertiesen
dc.subjectchemical evidenceen
dc.subjectradical reactionsen
dc.subjectelectron-transferen
dc.subjectamorphous sioxen
dc.titleDevelopment of [60] fullerene supported on silica catalysts for the photo-oxidation of alkenesen
heal.abstractSimple or successive incipient wetness impregnation followed by heating at 180 degrees C is proved an efficient preparation method for dispersing effectively onto the silica surface various amounts of C(60) in the range 1-4% (w/w). BET, XRD, DRS, TGA, microelectrophoresis and photoluminescence have been used to characterize the photocatalysts prepared. A high dispersion was obtained for the quite stable supported C(60) phase, comprised mainly from relatively small or medium size C(60) clusters/aggregates. The photocatalytic activity was assessed in the singlet oxygen oxidation of alkenes by examining the photo-oxygenation of 2-methyl-2-heptene as a probe reaction. The catalytic tests were carried out at 0-5 degrees C in CH(3)CN, under oxygen atmosphere and using a 300 W xenon lamp as the light source. The heterogeneous catalysts obtained were proved to be active in the photocatalytic oxidation of olefins via a (1)O(2) ene reaction. The catalysts exhibited significant conversion, turnover number and turnover frequency values, substantially higher than those achieved over the unsupported C(60). The conversion increases with the amount of the supported C(60) up to a value equal to 3% (w/w) and then it decreases whereas turnover number and turnover frequency decreases monotonically as the amount of the supported C(60) increases. The easy separation of these solid catalysts from the reaction mixture, the high activity and stability as well as the retained activity in subsequent catalytic cycles, make these supported catalysts suitable for a small-scale synthesis of fine chemicals. (C) 2009 Elsevier B.V. All rights reserved.en
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.primaryDOI 10.1016/j.apcata.2009.09.046-
heal.identifier.secondary<Go to ISI>://000273933800003-
heal.identifier.secondaryhttp://ac.els-cdn.com/S0926860X09006814/1-s2.0-S0926860X09006814-main.pdf?_tid=904c5978a4d8204d120257d369c9c187&acdnat=1333034184_b91cb89c1dfa4d56b981e26abf4d9d84-
heal.journalNameApplied Catalysis a-Generalen
heal.journalTypepeer reviewed-
heal.languageen-
heal.publicationDate2010-
heal.publisherElsevieren
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείαςel
heal.typejournalArticle-
heal.type.elΆρθρο Περιοδικούel
heal.type.enJournal articleen

Αρχεία

Φάκελος/Πακέτο αδειών

Προβολή: 1 - 1 of 1
Μικρογραφία εικόνας
Ονομα:
license.txt
Μέγεθος:
1.74 KB
Μορφότυπο:
Item-specific license agreed upon to submission
Περιγραφή:
Κατεβάστε

Συλλογές

Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά). ΧΗΜ