Textural and fractal properties of CuO/Al 2 O 3 catalyst supports
Samo za registrovane korisnike
2006
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Reactive amorphous aluminas with a high surface area, suitable as a precursor for catalyst supports, are obtained by flash calcination of gibbsite in a reactor for pneumatic transport in the dilute two phase flow regime. In the present paper we study the effects of the gibbsite dehydration temperature on the textural and fractal properties of activated aluminas. The parameters of the pore structure for all samples were evaluated from nitrogen adsorption-desorption isotherms. On the basis of the sorption-structure analysis, the fractal dimension of the aluminas surface were determined by three methods, according to Pfeifer and Avnir, Neimark et al. and Mahnke and Mögel, with a goal to compare obtained values. As expected, a good agreement between the results of these methods was achieve. The values of the fractal dimension of activated aluminas increase with the increase of the temperature of thermal treatment, indicating that the irregularities of their surfaces are greater.
Ključne reči:
Activated alumina / Flash calcinations / Fractal dimension / Pneumatic transportIzvor:
Chemical Engineering Journal, 2006, 120, 1-2, 55-61Izdavač:
- Elsevier
Finansiranje / projekti:
- Sinteza, karakterizacija i testiranje katalitičkih svojstava specijalno dizajniranih materijala (RS-MESTD-MPN2006-2010-142019)
DOI: 10.1016/j.cej.2006.03.027
ISSN: 1385-8947
WoS: 000238509500008
Scopus: 2-s2.0-33646901606
Institucija/grupa
Tehnološko-metalurški fakultetTY - JOUR AU - Rožić, Lj.S. AU - Petrović, S.P. AU - Novaković, T.B. AU - Čupić, Ž.D. AU - Grbavčić, Željko B. AU - Jovanović, D.M. PY - 2006 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5470 AB - Reactive amorphous aluminas with a high surface area, suitable as a precursor for catalyst supports, are obtained by flash calcination of gibbsite in a reactor for pneumatic transport in the dilute two phase flow regime. In the present paper we study the effects of the gibbsite dehydration temperature on the textural and fractal properties of activated aluminas. The parameters of the pore structure for all samples were evaluated from nitrogen adsorption-desorption isotherms. On the basis of the sorption-structure analysis, the fractal dimension of the aluminas surface were determined by three methods, according to Pfeifer and Avnir, Neimark et al. and Mahnke and Mögel, with a goal to compare obtained values. As expected, a good agreement between the results of these methods was achieve. The values of the fractal dimension of activated aluminas increase with the increase of the temperature of thermal treatment, indicating that the irregularities of their surfaces are greater. PB - Elsevier T2 - Chemical Engineering Journal T1 - Textural and fractal properties of CuO/Al 2 O 3 catalyst supports EP - 61 IS - 1-2 SP - 55 VL - 120 DO - 10.1016/j.cej.2006.03.027 ER -
@article{ author = "Rožić, Lj.S. and Petrović, S.P. and Novaković, T.B. and Čupić, Ž.D. and Grbavčić, Željko B. and Jovanović, D.M.", year = "2006", abstract = "Reactive amorphous aluminas with a high surface area, suitable as a precursor for catalyst supports, are obtained by flash calcination of gibbsite in a reactor for pneumatic transport in the dilute two phase flow regime. In the present paper we study the effects of the gibbsite dehydration temperature on the textural and fractal properties of activated aluminas. The parameters of the pore structure for all samples were evaluated from nitrogen adsorption-desorption isotherms. On the basis of the sorption-structure analysis, the fractal dimension of the aluminas surface were determined by three methods, according to Pfeifer and Avnir, Neimark et al. and Mahnke and Mögel, with a goal to compare obtained values. As expected, a good agreement between the results of these methods was achieve. The values of the fractal dimension of activated aluminas increase with the increase of the temperature of thermal treatment, indicating that the irregularities of their surfaces are greater.", publisher = "Elsevier", journal = "Chemical Engineering Journal", title = "Textural and fractal properties of CuO/Al 2 O 3 catalyst supports", pages = "61-55", number = "1-2", volume = "120", doi = "10.1016/j.cej.2006.03.027" }
Rožić, Lj.S., Petrović, S.P., Novaković, T.B., Čupić, Ž.D., Grbavčić, Ž. B.,& Jovanović, D.M.. (2006). Textural and fractal properties of CuO/Al 2 O 3 catalyst supports. in Chemical Engineering Journal Elsevier., 120(1-2), 55-61. https://doi.org/10.1016/j.cej.2006.03.027
Rožić L, Petrović S, Novaković T, Čupić Ž, Grbavčić ŽB, Jovanović D. Textural and fractal properties of CuO/Al 2 O 3 catalyst supports. in Chemical Engineering Journal. 2006;120(1-2):55-61. doi:10.1016/j.cej.2006.03.027 .
Rožić, Lj.S., Petrović, S.P., Novaković, T.B., Čupić, Ž.D., Grbavčić, Željko B., Jovanović, D.M., "Textural and fractal properties of CuO/Al 2 O 3 catalyst supports" in Chemical Engineering Journal, 120, no. 1-2 (2006):55-61, https://doi.org/10.1016/j.cej.2006.03.027 . .