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Efekti inhibicije u parcijalnoj oksidaciji cikloheksana Co(II) katalizatorima nanetim na polimerni nosač

dc.creatorLončarević, Davor
dc.creatorČupić, Željko
dc.creatorOdovic, M
dc.date.accessioned2019-01-30T17:12:33Z
dc.date.available2019-01-30T17:12:33Z
dc.date.issued2005
dc.identifier.issn0352-5139
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/169
dc.description.abstractPolymer supported catalysts with different contents of metal ions where synthesized by wet impregnation of the degassed support from ethanolic solutions of cobalt(II) nitrate. Amacroreticular copolymer of poly-4-vinylpyridine with divinylbenzene was used as the support. The prepared catalysts were tested in the partial oxidation of cyclohexane to cyclohexanol and cyclohexanone. Activity tests were performed in a stainless steel, laboratory scale, stirred autoclave, in the semi batch regime under isothermal and non-isothermal conditions. Isothermal experiments where performed at 170 °C for 120 min. In the non-isothermal conditions. isothermal experiments where performed at 170 °C for 120 min. In the non-isothermal experiments, a constant heating rate of 0.3 degree/min was used in the range between 110 °C and 170 °C. Non-linear, least-squares analysis with the simplex optimization method and numerical simulation of the reaction model in each iterative step was used for the kinetic characterization of the process in a non-stationary, semi-batch regime. Apparent rate constants were obtained as an invariant measure of the catalytic system. Anon-linear effect of the content of metal ions on the reaction rate and on the ratio of the yield of the products was observed, which is attributed to a complex interactions between the reaction medium and the heterogeneous catalyst, including a catalyst-inhibition effect.en
dc.description.abstractKatalizatori na polimernom nosaču, sa različitim sadržajem metalnih jona, sintetisani su impregnacijom degaziranog nosača iz alkoholnog rastvora kobalt(II) nitrata. Makroretikularni kopolimer poli-4-vinilpriridina sa divinilbenzenom je korišćen kao nosač. Pripremljeni katalizatori su testirani u reakciji parcijalne oksidacije cikloheksana do smeše cikloheksanola i cikloheksanona. Katalitički testovi su izvedeni u laboratorijskom, autoklavu od nerđajućeg čelika, pod izotermalnim i neizotermalnim uslovima. Izotermalni eksperimenti su izvođeni na 170 °C tokom 120 min. U neizotermalnim eksperimentima korišćena je konstantna brzina grejanja od 0,3 °C/min, u intervalu 110 - 170 °C. Nelinearna analiza najmanjih kvadrata sa simpleks metodom optimizacije u numeričkom simulacijom u svakom iteracionom koraku, je korišćena za kinetičku karakterizaciju procesa u nestacionarnom režimu. Dobijene su prividne konstante brzine kao invarijantna karakteristika katalitičkog sistema. Uočeni su nelinearni efekti sadržaja metalnih jona na brzine reakcija i na odnose koncentracija proizvoda. Ovi efekti su pripisani složenoj interakciji reakcione sredine i heterogenog katalizatora, koja uključuje i inhibiciju.sr
dc.publisherSerbian Chemical Society
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceJournal of the Serbian Chemical Society
dc.subjectcyclohexane oxidationen
dc.subjectpolymer supported catalystsen
dc.subjectreaction kineticsen
dc.titleInhibition effects in the partial oxidation of cyclohexane on polymer supported Co(II) catalystsen
dc.titleEfekti inhibicije u parcijalnoj oksidaciji cikloheksana Co(II) katalizatorima nanetim na polimerni nosačsr
dc.typearticle
dc.rights.licenseBY-NC-ND
dcterms.abstractЧупић, Жељко; Одовиц, М; Лончаревић, Давор; Ефекти инхибиције у парцијалној оксидацији циклохексана Цо(ИИ) катализаторима нанетим на полимерни носач; Ефекти инхибиције у парцијалној оксидацији циклохексана Цо(ИИ) катализаторима нанетим на полимерни носач;
dc.citation.volume70
dc.citation.issue2
dc.citation.spage209
dc.citation.epage221
dc.citation.other70(2): 209-221
dc.citation.rankM23
dc.identifier.doi10.2298/JSC0502209L
dc.identifier.rcubConv_2309
dc.identifier.fulltexthttp://cer.ihtm.bg.ac.rs//bitstream/id/8131/167.pdf
dc.identifier.scopus2-s2.0-31544468109
dc.identifier.wos000228072300008
dc.type.versionpublishedVersion


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