Comparison of structural, textural and thermal characteristics of pure and acid treated bentonites from Aleksinac and Petrovac (Serbia)
Само за регистроване кориснике
2011
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Bentonite samples collected from vicinity of Petrovac and Aleksinac were treated with different sulfuric acid molarities. Acid attack dissolved the octahedral sheets by interlayer and edge attack. The effects of the H2SO4 acid caused an exchange of Al3+, Fe3+ and Mg2+ with H. ions leading to a modification of the smectite crystalline structure. The Mg and Fe substitution in the octahedral sheets promoted the dispersion of corresponding layers and formation of amorphous silicon. The activated bentonites, after the treatment of sulfuric acid, exhibited a lower cation-exchange capacity (CEC)and significant increase of specific surface area from 6 to 387 m(2) g(-1) (bentonite from Petrovac) and from 11 to 306 m(2) g(-1) (bentonite from Aleksinac). The acid reaction caused a splitting of particles within the octahedral sheet which led to an increase in specific surface area and decrease in CEC in both bentonites.
Кључне речи:
Bentonite / Acid activation / Smectite / Cation exchange capacity / Specific surface areaИзвор:
Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy, 2011, 82, 1, 389-395Издавач:
- Pergamon-Elsevier Science Ltd, Oxford
Финансирање / пројекти:
- Ministry of Science and Technological Development of the Republic of Serbia
- Ministry of Education and Science of Macedonia
DOI: 10.1016/j.saa.2011.07.068
ISSN: 1386-1425
PubMed: 21824809
WoS: 000295956500057
Scopus: 2-s2.0-80052813441
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Tomić, Zorica P. AU - Logar, Vesna P. AU - Babić, Biljana M. AU - Rogan, Jelena AU - Makreski, Petre PY - 2011 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1876 AB - Bentonite samples collected from vicinity of Petrovac and Aleksinac were treated with different sulfuric acid molarities. Acid attack dissolved the octahedral sheets by interlayer and edge attack. The effects of the H2SO4 acid caused an exchange of Al3+, Fe3+ and Mg2+ with H. ions leading to a modification of the smectite crystalline structure. The Mg and Fe substitution in the octahedral sheets promoted the dispersion of corresponding layers and formation of amorphous silicon. The activated bentonites, after the treatment of sulfuric acid, exhibited a lower cation-exchange capacity (CEC)and significant increase of specific surface area from 6 to 387 m(2) g(-1) (bentonite from Petrovac) and from 11 to 306 m(2) g(-1) (bentonite from Aleksinac). The acid reaction caused a splitting of particles within the octahedral sheet which led to an increase in specific surface area and decrease in CEC in both bentonites. PB - Pergamon-Elsevier Science Ltd, Oxford T2 - Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy T1 - Comparison of structural, textural and thermal characteristics of pure and acid treated bentonites from Aleksinac and Petrovac (Serbia) EP - 395 IS - 1 SP - 389 VL - 82 DO - 10.1016/j.saa.2011.07.068 ER -
@article{ author = "Tomić, Zorica P. and Logar, Vesna P. and Babić, Biljana M. and Rogan, Jelena and Makreski, Petre", year = "2011", abstract = "Bentonite samples collected from vicinity of Petrovac and Aleksinac were treated with different sulfuric acid molarities. Acid attack dissolved the octahedral sheets by interlayer and edge attack. The effects of the H2SO4 acid caused an exchange of Al3+, Fe3+ and Mg2+ with H. ions leading to a modification of the smectite crystalline structure. The Mg and Fe substitution in the octahedral sheets promoted the dispersion of corresponding layers and formation of amorphous silicon. The activated bentonites, after the treatment of sulfuric acid, exhibited a lower cation-exchange capacity (CEC)and significant increase of specific surface area from 6 to 387 m(2) g(-1) (bentonite from Petrovac) and from 11 to 306 m(2) g(-1) (bentonite from Aleksinac). The acid reaction caused a splitting of particles within the octahedral sheet which led to an increase in specific surface area and decrease in CEC in both bentonites.", publisher = "Pergamon-Elsevier Science Ltd, Oxford", journal = "Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy", title = "Comparison of structural, textural and thermal characteristics of pure and acid treated bentonites from Aleksinac and Petrovac (Serbia)", pages = "395-389", number = "1", volume = "82", doi = "10.1016/j.saa.2011.07.068" }
Tomić, Z. P., Logar, V. P., Babić, B. M., Rogan, J.,& Makreski, P.. (2011). Comparison of structural, textural and thermal characteristics of pure and acid treated bentonites from Aleksinac and Petrovac (Serbia). in Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy Pergamon-Elsevier Science Ltd, Oxford., 82(1), 389-395. https://doi.org/10.1016/j.saa.2011.07.068
Tomić ZP, Logar VP, Babić BM, Rogan J, Makreski P. Comparison of structural, textural and thermal characteristics of pure and acid treated bentonites from Aleksinac and Petrovac (Serbia). in Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy. 2011;82(1):389-395. doi:10.1016/j.saa.2011.07.068 .
Tomić, Zorica P., Logar, Vesna P., Babić, Biljana M., Rogan, Jelena, Makreski, Petre, "Comparison of structural, textural and thermal characteristics of pure and acid treated bentonites from Aleksinac and Petrovac (Serbia)" in Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy, 82, no. 1 (2011):389-395, https://doi.org/10.1016/j.saa.2011.07.068 . .