Porous ceramic monoliths based on diatomite
Само за регистроване кориснике
2015
Аутори
Šaponjić, AleksandraStanković, Miroslav
Majstorović, Jelena
Matović, Branko
Ilić, Svetlana M.
Egelja, Adela
Kokunešoski, Maja
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Porous silica ceramics were obtained at low forming pressure and low sintering temperature by using diatomaceous earth as a silica source and boric acid as an inexpensive additive. The starting raw material, diatomite from surface coal mine Kolubara, Serbia, was purified from organic and inorganic impurities by using heat and chemical treatment. Boric acid was used as binding and sintering aid up to 2 wt%. Powder was compacted by using different pressures of 40, 60 and 80 MPa. The pressed samples were sintered at 850, 1000, 1150, and 1300 degrees C for 4 h in air. A relatively high porosity in the range of 60-70% is obtained for the samples pressed at 40, 60 and 80 MPa and sintered at 1000 degrees C. Median pore size diameters are in the range of macroporous up to 2 mu m in the samples sintered at 1150 and 1300 degrees C. X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scaning electron microscopy (SEM) and mercury porosimetry measurements were employed to chara...cterize the phases, functional groups, microstructure and pore size distribution of the obtained samples. In addition, measurements of densities and open porosities by immersion technique, according to Archimedes principle, were used. The relations between mechanical properties (Young modulus, Poisson ratio, and compressive strength) versus content of boric acid in the investigated samples were studied and disscussed. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Кључне речи:
Sintering / Porosity / Diatomite / Boric acidИзвор:
Ceramics International, 2015, 41, 8, 9745-9752Финансирање / пројекти:
- Синтеза, процесирање и карактеризација наноструктурних материјала за примену у области енергије, механичког инжењерства, заштите животне стредине и биомедицине (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45012)
DOI: 10.1016/j.ceramint.2015.04.046
ISSN: 0272-8842; 1873-3956
WoS: 000356549100071
Scopus: 2-s2.0-84930930019
Колекције
Институција/група
VinčaTY - JOUR AU - Šaponjić, Aleksandra AU - Stanković, Miroslav AU - Majstorović, Jelena AU - Matović, Branko AU - Ilić, Svetlana M. AU - Egelja, Adela AU - Kokunešoski, Maja PY - 2015 UR - https://vinar.vin.bg.ac.rs/handle/123456789/617 AB - Porous silica ceramics were obtained at low forming pressure and low sintering temperature by using diatomaceous earth as a silica source and boric acid as an inexpensive additive. The starting raw material, diatomite from surface coal mine Kolubara, Serbia, was purified from organic and inorganic impurities by using heat and chemical treatment. Boric acid was used as binding and sintering aid up to 2 wt%. Powder was compacted by using different pressures of 40, 60 and 80 MPa. The pressed samples were sintered at 850, 1000, 1150, and 1300 degrees C for 4 h in air. A relatively high porosity in the range of 60-70% is obtained for the samples pressed at 40, 60 and 80 MPa and sintered at 1000 degrees C. Median pore size diameters are in the range of macroporous up to 2 mu m in the samples sintered at 1150 and 1300 degrees C. X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scaning electron microscopy (SEM) and mercury porosimetry measurements were employed to characterize the phases, functional groups, microstructure and pore size distribution of the obtained samples. In addition, measurements of densities and open porosities by immersion technique, according to Archimedes principle, were used. The relations between mechanical properties (Young modulus, Poisson ratio, and compressive strength) versus content of boric acid in the investigated samples were studied and disscussed. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved. T2 - Ceramics International T1 - Porous ceramic monoliths based on diatomite VL - 41 IS - 8 SP - 9745 EP - 9752 DO - 10.1016/j.ceramint.2015.04.046 ER -
@article{ author = "Šaponjić, Aleksandra and Stanković, Miroslav and Majstorović, Jelena and Matović, Branko and Ilić, Svetlana M. and Egelja, Adela and Kokunešoski, Maja", year = "2015", abstract = "Porous silica ceramics were obtained at low forming pressure and low sintering temperature by using diatomaceous earth as a silica source and boric acid as an inexpensive additive. The starting raw material, diatomite from surface coal mine Kolubara, Serbia, was purified from organic and inorganic impurities by using heat and chemical treatment. Boric acid was used as binding and sintering aid up to 2 wt%. Powder was compacted by using different pressures of 40, 60 and 80 MPa. The pressed samples were sintered at 850, 1000, 1150, and 1300 degrees C for 4 h in air. A relatively high porosity in the range of 60-70% is obtained for the samples pressed at 40, 60 and 80 MPa and sintered at 1000 degrees C. Median pore size diameters are in the range of macroporous up to 2 mu m in the samples sintered at 1150 and 1300 degrees C. X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scaning electron microscopy (SEM) and mercury porosimetry measurements were employed to characterize the phases, functional groups, microstructure and pore size distribution of the obtained samples. In addition, measurements of densities and open porosities by immersion technique, according to Archimedes principle, were used. The relations between mechanical properties (Young modulus, Poisson ratio, and compressive strength) versus content of boric acid in the investigated samples were studied and disscussed. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.", journal = "Ceramics International", title = "Porous ceramic monoliths based on diatomite", volume = "41", number = "8", pages = "9745-9752", doi = "10.1016/j.ceramint.2015.04.046" }
Šaponjić, A., Stanković, M., Majstorović, J., Matović, B., Ilić, S. M., Egelja, A.,& Kokunešoski, M.. (2015). Porous ceramic monoliths based on diatomite. in Ceramics International, 41(8), 9745-9752. https://doi.org/10.1016/j.ceramint.2015.04.046
Šaponjić A, Stanković M, Majstorović J, Matović B, Ilić SM, Egelja A, Kokunešoski M. Porous ceramic monoliths based on diatomite. in Ceramics International. 2015;41(8):9745-9752. doi:10.1016/j.ceramint.2015.04.046 .
Šaponjić, Aleksandra, Stanković, Miroslav, Majstorović, Jelena, Matović, Branko, Ilić, Svetlana M., Egelja, Adela, Kokunešoski, Maja, "Porous ceramic monoliths based on diatomite" in Ceramics International, 41, no. 8 (2015):9745-9752, https://doi.org/10.1016/j.ceramint.2015.04.046 . .