20.500.12556/DiRROS-29462 Physicochemical and thermal properties of aluminosilicate gels based on metakaolin doped with different amounts of samarium(III)-oxide Aluminosilicate materials, known for their high strength, corrosion resistance, and thermal stability, are synthesized through the alkali activation of metakaolin, incorporating Sm2O3 to investigate the impact on their physicochemical properties. This study takes a look at the synthesis and physicochemical characterization of aluminosilicate gels doped with samarium(III)-oxide (Sm2O3), focusing on their potential as thermal insulators due to their enhanced thermal conductivity and absorption properties. Two samples with 1% and 5% Sm2O3 by weight were investigated, referred to as S1 and S2, respectively. Characterization techniques such as energy-dispersive X-ray fluorescence spectrometry (EDXRF), diffuse reflectance infrared Fourier transform spectroscopy (DRIFT), scanning electron microscopy (SEM), and photothermal beam deflection (PBD) were employed for the physicochemical characterization of aluminosilicate materials. The structural analysis shows an integration of Sm2O3, which did not significantly affect the gel’s density or porosity but enhanced its thermal conductivity. This study shows the potential of Sm2O3-doped aluminosilicates in applications requiring improved thermal management and stability, positioning them as potentially suitable materials for insulation. metakaolin samarium(III) oxide samarijev(III) oksid true false true MDPI Švica Angleški jezik Slovenski jezik © 2026 by the authors. Neznano 2026-05-20 12:22:19 2026-05-20 12:22:19 2026-05-21 03:54:10 0000-00-00 00:00:00 2026 0 0 Nasl. z nasl. zaslona; Soavtorja iz Slovenije: Dorota Korte, Marijan Nečemer; Opis vira z dne 19. 5. 2026; str. 1-13 iss. 5 Vol. 12 May 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2026-03-16 2026-05-12 2026-05-15 54 2310-2861 10.3390/gels12050432 278597635 https://www.mdpi.com/2310-2861/12/5/432 1 cc1c5761-5435-11f1-8a5a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=44185 RAZ_Knezevic_Sanja_2026.pdf RAZ_Knezevic_Sanja_2026.pdf 1 EF3E4F3F4EBA6C7C3076232670E4E667 3573a2eda43bf3db3fb257506a3934c7e5297cca2a948e48db7c151fbd925aa1 641675e3-5436-11f1-8a5a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=44186 Institut Jožef Stefan 0 0 0