Приказ основних података о документу
Non-isothermal kinetic characterisation of a gas-solid reaction by TG analysis
Neizotermalna kinetička karakterizacija reakcija gasnih i čvrstih reaktanata TG analizom
dc.creator | Čupić, Željko | |
dc.creator | Jovanović, Dušan M. | |
dc.creator | Krstić, Jugoslav | |
dc.creator | Vukelić, Nikola | |
dc.creator | Nedić, Zoran | |
dc.date.accessioned | 2019-01-30T17:12:32Z | |
dc.date.available | 2019-01-30T17:12:32Z | |
dc.date.issued | 2005 | |
dc.identifier.issn | 0352-5139 | |
dc.identifier.uri | https://cer.ihtm.bg.ac.rs/handle/123456789/168 | |
dc.description.abstract | A series of silica-supported Ni-catalyst precursors was synthesized, with different SiO2/Nimole ratios between 0.2 and 1.15. The reduction of all the prepared samples was studied by thermogravimetry (TG) in a hydrogen flow. The results of the TG analysis were analyzed by the multi-thermal history model-fitting method, with non-linear regression. The activation energies for the reduction of each sample were determined. The statistical F-test was performed to discriminate between various models. It was found that increasing the SiO2/Ni mole ratio leads to a change in the reaction mechanism of the nickel reduction, resulting finally in a change from second order reaction kinetics to three halves order reaction kinetics. | en |
dc.description.abstract | Niz prekursora Ni katalizatora, na silikatnom nosaču je sintetisan sa različitim SiO 2/Ni molskim odnosima, između 0,2 i 1,15. Redukcija svih pripremljenih uzoraka je proučavana termogravimetrijski (TG) u protoku vodonika. Na rezultate TG analiza je primenjena „metoda fitovanja modelima iz višestruke termalne istorije” sa nelinearnom regresijom. Energije aktivacija su određene za proces redukcije na svim uzorcima. Statistički F-test je korišćen za diskriminaciju među modelima. Nađeno je da povećanje SiO2/Ni molskog odnosa vodi promeni reakcionog mehanizma redukcije Ni, što na kraju dovodi do promene kinetike od reakcije drugog reda do reakcije reda 3/2. | 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 | non-isothermal kinetics | en |
dc.subject | thermogravimetry | en |
dc.subject | non-linear regression | en |
dc.subject | nickelcatalyst | en |
dc.subject | catalyst preparation | en |
dc.title | Non-isothermal kinetic characterisation of a gas-solid reaction by TG analysis | en |
dc.title | Neizotermalna kinetička karakterizacija reakcija gasnih i čvrstih reaktanata TG analizom | sr |
dc.type | article | |
dc.rights.license | BY-NC-ND | |
dcterms.abstract | Чупић, Жељко; Вукелиц, Н; Јовановиц, Д; Недиц, З; Крстић, Југослав; Неизотермална кинетичка карактеризација реакција гасних и чврстих реактаната ТГ анализом; Неизотермална кинетичка карактеризација реакција гасних и чврстих реактаната ТГ анализом; | |
dc.citation.volume | 70 | |
dc.citation.issue | 11 | |
dc.citation.spage | 1301 | |
dc.citation.epage | 1311 | |
dc.citation.other | 70(11): 1301-1311 | |
dc.citation.rank | M23 | |
dc.identifier.doi | 10.2298/JSC0511301C | |
dc.identifier.fulltext | https://cer.ihtm.bg.ac.rs//bitstream/id/8123/166.pdf | |
dc.identifier.scopus | 2-s2.0-31544465743 | |
dc.identifier.wos | 000234277000008 | |
dc.type.version | publishedVersion |