| Title: | The formation and properties of large-surface-area intergranular mesoporous Al2O3 particles |
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| Authors: | ID Šparlek, Klara (Author)
ID Cerc Korošec, Romana (Author)
ID Dražić, Goran (Author)
ID Meden, Anton (Author)
ID Švara Fabjan, Erika (Author) |
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| Files: |  URL - Source URL, visit https://doi.org/10.1016/j.ceramint.2025.05.353
 PDF - Presentation file, download (6,06 MB)
MD5: E01240C05C041AD3C2D28FEBAAC45038
 DOCX - Supplement, download (284,16 KB)
MD5: E308D6B1E6B9B7C613450BF6A45CCFE9
Description: Appendix A. Supplementary data
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  ZAG - Slovenian National Building and Civil Engineering Institute
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| Abstract: | Mesoporous γ-Al2O3 with pores formed between nanocrystals was synthesized via the hydrothermal method, varying the ethanolamines (monoethanolamine, diethanolamine, triethanolamine), pH values (6.5, 7.5, 8.5) and the temperature of the thermal treatment. Characterization techniques, including nitrogen physisorption, X-ray powder diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), thermogravimetric-differential scanning calorimetry-mass spectrometry (TG-DSC-MS), and transmission electron microscopy (TEM), were employed to study the textural and structural properties of the materials. Thermal treatment at 500 ◦C produced mesoporous γ-Al2O3 with pores formed between nanoparticles. The materials synthesized with triethanolamine exhibited the narrowest pore size distribution and the highest specific surface area, particularly at higher pH values. The thermal treatment temperature significantly influenced the textural properties and crystallinity, with γ-Al2O3 retained up to 900 ◦C and the transformation to non-porous α-Al2O3 occurring at 1300 ◦C. These results demonstrate the critical role of synthesis parameters in understanding and optimizing the pore size and phase stability of mesoporous alumina. |
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| Keywords: | mesoporous Al2O3, hydrothermal method, intergranular porosity, ethanolamines, influence of pH, temperature of thermal treatment |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 28.05.2025 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2025 |
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| Number of pages: | str. 36349-36358 |
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| Numbering: | iss. 22, part A |
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| PID: | 20.500.12556/DiRROS-24129  |
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| UDC: | 54 |
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| ISSN on article: | 1873-3956 |
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| DOI: | 10.1016/j.ceramint.2025.05.353 |
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| COBISS.SI-ID: | 238001923 |
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| Copyright: | © 2025 The Authors |
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| Note: |
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| Publication date in DiRROS: | 17.11.2025 |
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| Views: | 131 |
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| Downloads: | 76 |
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