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master's thesis
Sol-gel sinteza cerijeva (IV) oksida dopiranog manganom
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. urn:nbn:hr:149:918566
Alić, Emina Ema
University of Zagreb
Faculty of Chemical Engineering and Technology

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

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Alić, E. E. (2020). Sol-gel sinteza cerijeva (IV) oksida dopiranog manganom (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:918566

Alić, Emina Ema. "Sol-gel sinteza cerijeva (IV) oksida dopiranog manganom." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:149:918566

Alić, Emina Ema. "Sol-gel sinteza cerijeva (IV) oksida dopiranog manganom." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:149:918566

Alić, E. E. (2020). 'Sol-gel sinteza cerijeva (IV) oksida dopiranog manganom', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 20 December 2024, https://urn.nsk.hr/urn:nbn:hr:149:918566

Alić EE. Sol-gel sinteza cerijeva (IV) oksida dopiranog manganom [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2020 [cited 2024 December 20] Available at: https://urn.nsk.hr/urn:nbn:hr:149:918566

E. E. Alić, "Sol-gel sinteza cerijeva (IV) oksida dopiranog manganom", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:149:918566

Metadata
TitleSol-gel sinteza cerijeva (IV) oksida dopiranog manganom
Title (english)Sol-gel synthesis of manganese-doped ceria
AuthorEmina Ema Alić
MentorStanislav Kurajica (mentor)
Committee memberStanislav Kurajica (predsjednik povjerenstva)
Committee memberVilko Mandić (član povjerenstva)
Committee memberKrunoslav Žižek (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2020-09-21, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Basic Technical Sciences
Abstract
Cerijev(IV) oksid te cerijev(IV) oksid dopiran manganom pripravljeni su sol-gel procesom. Korišteni su prekursori cerijev acetil acetonat hidrat i manganov acetil acetonat. Nakon sinteze provedena je karakterizacija dobivenih materijala metodama pretražne elektronske mikroskopije, rendgenske difrakcijske analize, infracrvene spektroskopije s Fourierovim transformacijama te diferencijalne termalne analize i termogravimetrijske analize. Provedenim analizama utvrđeno je da je postignuta hidroliza prekursora te je došlo do formiranja gela. Toplinska evolucija uzoraka detaljno je karakterizirana pri različitim temperaturama, te su 500 °C i 2 h izabrani kao parametri termičke obrade. Čisti CeO2 je jedina kristalna faza dobivena toplinskom obradom uzoraka. Parametar jedinične ćelije a ukazuje na ulazak mangana u kristalnu rešetku CeO2. Provedena je kinetička analiza te su određene energije aktivacije okrupnjavanja svih uzoraka. Dopirani uzorci imaju manje veličine kristalita i povećanu toplinsku stabilnost u odnosu na čisti CeO2.
Abstract (english)
Manganase-doped ceria and pure ceria samples were prepared by the sol-gel process. Cerium acetylacetonae hydrate and manganase acetylacetonate were used as precursors. The characterization of obtained samples has been conducted by scanning electron microscopy, X-ray diffraction, Fourier transformed infra-red spectroscopy, as well as differential thermal and thermo-gravimetric analysis. It was established that hydrolysis of the precursors and gel formation was achieved. Thermal evolution on several different temperatures was characterized in details. A temperature of 500 °C and a 2 h duration were selected as thermal treatment parameters. Pure ceria was the only crystal phase obtained by thermal treatment with lattice constant a revealing the entrance of manganese in crystal lattice of ceria. Kinetic analysis was conducted and coarsening activation energies of samples were determined. Doped samples displayed smaller crystallite size and increased thermal stability in comparison with pure sample.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:918566
ProjectNumber: IP-2018-01-2963
Title: Hidrotermalna sinteza dopiranog cerij oksidnog nanokatalizatora
Acronym: HOuDiNI
Leader: Stanislav Kurajica
Jurisdiction: Croatia
Funder: HRZZ
Funding stream: IP
Study programmeTitle: Materials Science and Engineering - Graduate study
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2022-02-28 13:34:38