Stanislav Kurajica

Dr. Stanislav Kurajica

Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, 10000 Zagreb, Croatia
orcid

Research Focus & Metrics

Academic Career Length

19Years (2008-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 August 2021 in Journal of Environmental Chemical Engineering
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Journal Article
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KBKristina Babić
Kristina Babić
VTVesna Tomašić
Vesna Tomašić
VGVanja Gilja
Vanja Gilja
JCJerome Le Cunff
Jerome Le Cunff
VGVjeran Gomzi
Vjeran Gomzi
Ivana GrčićIvana Grčić
Ivana Grčić

1 January 2016 in Journal of Nanomaterials
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Journal Article
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SKStanislav Kurajica
Stanislav Kurajica
IMIva Minga
Iva Minga
MGMartina Guliš
Martina Guliš
VMVilko Mandić
Vilko Mandić
ISIvan Simčić
Ivan Simčić
Hydrothermal synthesis of CeO2was optimized on two reactant concentrations and synthesis temperature and duration, in order to achieve material having the greatest specific surface area (SSA). Taguchi method of experimental design was employed in evaluation of the relative importance of synthesis parameters. CeO2nanoparticles were characterized using X-ray diffraction, nitrogen adsorption-desorption isotherms, and scanning electron microscopy. Optimum conditions for obtaining particles with greater SSA were calculated according to Taguchi’s model “the-higher-the-better.” Synthesis temperature was found to be the only parameter significant for enabling nanoparticles with greater SSA. Mesoporous nanocrystalline ceria with SSA as great as 226 m2 g−1was achieved, which is unprecedented for the hydrothermally synthesized ceria. The reason for this achievement was found in temperature dependence of the diffusion coefficient which, when low, favors nucleation yielding with fine particles, while when high it favors crystal growth and formation of one-dimensional structures. The occurrence of 1D-structure in sample exhibiting the smallest SSA was confirmed. Very fine crystallites with crystallite size as low as 5.9 nm have been obtained being roughly inverse proportional to SSA. Selected samples were tested as catalyst for soot oxidation. Catalyst morphology turned out to be decisive factor for catalytic activity.

4 October 2019 in Chemical and Biochemical Engineering Quarterly
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Journal Article
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SKStanislav Kurajica
Stanislav Kurajica
Metal alkoxides are the most commonly used sol-gel process precursors. Most alkoxides show excessive reactivity towards water. That leads to rapid hydrolysis, metal hydroxide formation, and immediate precipitation. The reactivity of alkoxides can be reduced by modification with chelation agents. Chelation influences the gelation process, which is reflected in gel structure and properties of the final material. In this short review, the chelation process, the oligomerization phenomena, and the influence of the chelating agent on the gel structure are discussed. Peculiarities of the use of FTIR and NMR, as methods particularly suitable for the investigation of chelation process, are described taking ethyl acetoacetate as an example.

1 April 2020 in Materials Chemistry and Physics
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Journal Article
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SKStanislav Kurajica
Stanislav Kurajica
KMKatarina Mužina
Katarina Mužina
Goran DrazicGoran Drazic
Goran Drazic
GMGordana Matijašić
Gordana Matijašić
MDMarina Duplančić
Marina Duplančić
IMIvana Katarina Munda
Ivana Katarina Munda

29 February 2008 in Journal of Sol-Gel Science and Technology
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Journal Article
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SKStanislav Kurajica
Stanislav Kurajica
ETE. Tkalcec
E. Tkalcec
JSJ. Sipusic
J. Sipusic
GMGordana Matijašić
Gordana Matijašić
IBI. Brnardic
I. Brnardic
ISI. Simcic
I. Simcic

1 February 2021 in Journal of Non-Crystalline Solids
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Journal Article
Closed access
SKStanislav Kurajica
Stanislav Kurajica
JŠJuraj Šipušić
Juraj Šipušić
MZMartina Zupancic
Martina Zupancic
IBIgor Brautović
Igor Brautović
MAMartin Albrecht
Martin Albrecht