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Pregled bibliografske jedinice broj: 1203982

Thermal evolution of gels prepared by chelation of aluminum sec‑butoxide with ethyl acetoacetate in various amounts


Kurajica, Stanislav; Mužina, Katarina; Simčić, Ivan; Mandić, Vilko
Thermal evolution of gels prepared by chelation of aluminum sec‑butoxide with ethyl acetoacetate in various amounts // Journal of thermal analysis and calorimetry, 148 (2023), 4; 1231-1239 doi:10.1007/s10973-022-11448-8 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 1203982 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Thermal evolution of gels prepared by chelation of aluminum sec‑butoxide with ethyl acetoacetate in various amounts

Autori
Kurajica, Stanislav ; Mužina, Katarina ; Simčić, Ivan ; Mandić, Vilko

Izvornik
Journal of thermal analysis and calorimetry (1388-6150) 148 (2023), 4; 1231-1239

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
alumina ; sol–gel ; chelation ; thermal analysis

Sažetak
This work presents a thermal evolution study of gels obtained by chelation of aluminum sec- butoxide (Asb) with ethyl acetoacetate (Eaa) in various amounts. Samples were characterized by scanning electron microscopy (SEM), low angle laser light scattering (LALLS), differential thermal and thermo-gravimetric analysis (DTA/TGA), Fourier-transformed infra-red spectroscopy (FTIR) and X-ray diffraction (XRD). It was established that samples with a low Eaa/Asb ratio are mainly amorphous, whilst the samples with greater Eaa/Asb ratio are predominantly chelate. The crystallization of γ-Al2O3 takes place between 600 and 1000 °C in two separate processes for all investigated samples. On the other hand, a complete transition to α-Al2O3 at 1200 °C occurs exclusively in samples with high Eaa/Asb ratio, while it is only partial for samples with low Eaa/Asb ratio. The observed mass loss is in concordance with the hypothesis that the overall gel content in the samples could be represented by a simplified formula Al(Eaa)xO(3−x)/2, where x is the Eaa/Asb ratio. In addition to thermal evolution, the gel-chelate duality of the samples is reflected in the morphology and particle size distribution.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo, Temeljne tehničke znanosti



POVEZANOST RADA


Projekti:
HRZZ-IP-2018-01-2963 - Hidrotermalna sinteza dopiranog cerij oksidnog nanokatalizatora (HOuDiNI) (Kurajica, Stanislav, HRZZ - 2018-01) ( CroRIS)
HRZZ-UIP-2019-04-2367 - Fenomeni na površini tijekom priprave naprednih nanokompozita infiltracijom i funkcionalizacijom poroznih materijala (SLIPPERYSLOPE) (Mandić, Vilko, HRZZ - 2019-04) ( CroRIS)
MZO-RH-RSLO-N/A - NMR karakterizacija aluminijeva sec-butoksida modificiranog s etil acetoacetatom u različitim udjelima (Kurajica, Stanislav, MZO - Znanstveno-tehnološka suradnja sa Slovenijom 2014.-2015.) ( CroRIS)
--PZS-2019-02-1555 - Fotonaponska-geopolimerna fasada: uloga vode-kisika u naprednom sklapanju filmova kompozitnih materijala (PV-WALL) (Mandić, Vilko; Pavić, Luka) ( CroRIS)

Ustanove:
Fakultet kemijskog inženjerstva i tehnologije, Zagreb,
PLIVA HRVATSKA d.o.o.

Profili:

Avatar Url Vilko Mandić (autor)

Avatar Url Katarina Mužina (autor)

Avatar Url Stanislav Kurajica (autor)

Poveznice na cjeloviti tekst rada:

doi dx.doi.org link.springer.com

Citiraj ovu publikaciju:

Kurajica, Stanislav; Mužina, Katarina; Simčić, Ivan; Mandić, Vilko
Thermal evolution of gels prepared by chelation of aluminum sec‑butoxide with ethyl acetoacetate in various amounts // Journal of thermal analysis and calorimetry, 148 (2023), 4; 1231-1239 doi:10.1007/s10973-022-11448-8 (međunarodna recenzija, članak, znanstveni)
Kurajica, S., Mužina, K., Simčić, I. & Mandić, V. (2023) Thermal evolution of gels prepared by chelation of aluminum sec‑butoxide with ethyl acetoacetate in various amounts. Journal of thermal analysis and calorimetry, 148 (4), 1231-1239 doi:10.1007/s10973-022-11448-8.
@article{article, author = {Kurajica, Stanislav and Mu\v{z}ina, Katarina and Sim\v{c}i\'{c}, Ivan and Mandi\'{c}, Vilko}, year = {2023}, pages = {1231-1239}, DOI = {10.1007/s10973-022-11448-8}, keywords = {alumina, sol–gel, chelation, thermal analysis}, journal = {Journal of thermal analysis and calorimetry}, doi = {10.1007/s10973-022-11448-8}, volume = {148}, number = {4}, issn = {1388-6150}, title = {Thermal evolution of gels prepared by chelation of aluminum sec‑butoxide with ethyl acetoacetate in various amounts}, keyword = {alumina, sol–gel, chelation, thermal analysis} }
@article{article, author = {Kurajica, Stanislav and Mu\v{z}ina, Katarina and Sim\v{c}i\'{c}, Ivan and Mandi\'{c}, Vilko}, year = {2023}, pages = {1231-1239}, DOI = {10.1007/s10973-022-11448-8}, keywords = {alumina, sol–gel, chelation, thermal analysis}, journal = {Journal of thermal analysis and calorimetry}, doi = {10.1007/s10973-022-11448-8}, volume = {148}, number = {4}, issn = {1388-6150}, title = {Thermal evolution of gels prepared by chelation of aluminum sec‑butoxide with ethyl acetoacetate in various amounts}, keyword = {alumina, sol–gel, chelation, thermal analysis} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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