Приказ основних података о документу
Inhibition effects in the partial oxidation of cyclohexane on polymer supported Co(II) catalysts
Efekti inhibicije u parcijalnoj oksidaciji cikloheksana Co(II) katalizatorima nanetim na polimerni nosač
dc.creator | Lončarević, Davor | |
dc.creator | Čupić, Željko | |
dc.creator | Odovic, M | |
dc.date.accessioned | 2019-01-30T17:12:33Z | |
dc.date.available | 2019-01-30T17:12:33Z | |
dc.date.issued | 2005 | |
dc.identifier.issn | 0352-5139 | |
dc.identifier.uri | https://cer.ihtm.bg.ac.rs/handle/123456789/169 | |
dc.description.abstract | Polymer 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.abstract | Katalizatori 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.publisher | Serbian Chemical Society | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.source | Journal of the Serbian Chemical Society | |
dc.subject | cyclohexane oxidation | en |
dc.subject | polymer supported catalysts | en |
dc.subject | reaction kinetics | en |
dc.title | Inhibition effects in the partial oxidation of cyclohexane on polymer supported Co(II) catalysts | en |
dc.title | Efekti inhibicije u parcijalnoj oksidaciji cikloheksana Co(II) katalizatorima nanetim na polimerni nosač | sr |
dc.type | article | |
dc.rights.license | BY-NC-ND | |
dcterms.abstract | Чупић, 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.volume | 70 | |
dc.citation.issue | 2 | |
dc.citation.spage | 209 | |
dc.citation.epage | 221 | |
dc.citation.other | 70(2): 209-221 | |
dc.citation.rank | M23 | |
dc.identifier.doi | 10.2298/JSC0502209L | |
dc.identifier.fulltext | https://cer.ihtm.bg.ac.rs//bitstream/id/8131/167.pdf | |
dc.identifier.scopus | 2-s2.0-31544468109 | |
dc.identifier.wos | 000228072300008 | |
dc.type.version | publishedVersion |