TY  - JOUR
AU  - Rožić, Ljiljana
AU  - Grbić, Boško
AU  - Petrović, Srđan
AU  - Radić, Nenad
AU  - Damjanović, Ljiljana
AU  - Vuković, Zorica
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1788
AB  - This paper provides the correlation between the catalytic activity and selectivity of catalysts with various loadings of heteropolyacids over bentonite in the vapour phase 2-propanol oxidation. The catalysts are characterised by energy dispersive spectroscopy, differential scanning calorimeter, ammonia temperature programmed desorption, infrared spectroscopy and a nitrogen adsorption/desorption method. Energy dispersive spectroscopy results have shown satisfactory agreement regarding chemical composition that corresponds to the desired content of heteropolyacids on bentonite. Thermal analysis confirmed the thermal stability of catalysts under the investigated region of oxidation reaction. NH3-TPD spectra demonstrated that all catalysts include two types of acidic sites: weak adsorption centres up to 390 K and a broad distribution of stronger acidic sites at higher temperatures. The catalysts were active in the vapour-phase conversion of 2-propanol to acetone in the temperature region of 343-553 K. An increase of HPW loading improves selectivity towards acetone formation.
PB  - Elsevier Science Sa, Lausanne
T2  - Materials Chemistry and Physics
T1  - The tungsten heteropolyacid supported on activated bentonites as catalyst for selective oxidation of 2-propanol
VL  - 167
SP  - 42
EP  - 48
DO  - 10.1016/j.matchemphys.2015.09.040
ER  - 

@article{
author = "Rožić, Ljiljana and Grbić, Boško and Petrović, Srđan and Radić, Nenad and Damjanović, Ljiljana and Vuković, Zorica",
year = "2015",
abstract = "This paper provides the correlation between the catalytic activity and selectivity of catalysts with various loadings of heteropolyacids over bentonite in the vapour phase 2-propanol oxidation. The catalysts are characterised by energy dispersive spectroscopy, differential scanning calorimeter, ammonia temperature programmed desorption, infrared spectroscopy and a nitrogen adsorption/desorption method. Energy dispersive spectroscopy results have shown satisfactory agreement regarding chemical composition that corresponds to the desired content of heteropolyacids on bentonite. Thermal analysis confirmed the thermal stability of catalysts under the investigated region of oxidation reaction. NH3-TPD spectra demonstrated that all catalysts include two types of acidic sites: weak adsorption centres up to 390 K and a broad distribution of stronger acidic sites at higher temperatures. The catalysts were active in the vapour-phase conversion of 2-propanol to acetone in the temperature region of 343-553 K. An increase of HPW loading improves selectivity towards acetone formation.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Materials Chemistry and Physics",
title = "The tungsten heteropolyacid supported on activated bentonites as catalyst for selective oxidation of 2-propanol",
volume = "167",
pages = "42-48",
doi = "10.1016/j.matchemphys.2015.09.040"
}

Rožić, L., Grbić, B., Petrović, S., Radić, N., Damjanović, L.,& Vuković, Z.. (2015). The tungsten heteropolyacid supported on activated bentonites as catalyst for selective oxidation of 2-propanol. in Materials Chemistry and Physics
Elsevier Science Sa, Lausanne., 167, 42-48.
https://doi.org/10.1016/j.matchemphys.2015.09.040

Rožić L, Grbić B, Petrović S, Radić N, Damjanović L, Vuković Z. The tungsten heteropolyacid supported on activated bentonites as catalyst for selective oxidation of 2-propanol. in Materials Chemistry and Physics. 2015;167:42-48.
doi:10.1016/j.matchemphys.2015.09.040 .

Rožić, Ljiljana, Grbić, Boško, Petrović, Srđan, Radić, Nenad, Damjanović, Ljiljana, Vuković, Zorica, "The tungsten heteropolyacid supported on activated bentonites as catalyst for selective oxidation of 2-propanol" in Materials Chemistry and Physics, 167 (2015):42-48,
https://doi.org/10.1016/j.matchemphys.2015.09.040 . .

TY  - JOUR
AU  - Anic, Mirjana
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Dondur, Vera
AU  - Damjanović, Ljiljana
AU  - Stoychev, Dimitar
AU  - Stefanov, Plamen
PY  - 2011
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/865
AB  - The deep oxidation of n-hexane was studied over Pt catalysts with small and large Pt crystallites, promoted by MnOx. The Mn was deposited on the Pt/Al2O3 by deposition-precipitation method using two alkalis, ammonia and dimethylamine. The strength of the base influenced morphology and performances of Mn-Pt catalysts. Ammonia formed mostly spherical structure of manganese oxide, while dimethylamine created fibrous needle-like shape of MnOx, typical for cryptomelane phase of manganese oxide. This was confirmed by XPS results that show an oxidation state of Mn close to that for cryptomelane. The Pt-Mn catalysts were more active than catalysts containing Pt only. Promoting effect of MnOx is more pronounced for larger Pt crystallites. Among Pt-Mn samples, catalysts synthesized with dimethylamine exhibited the highest activities. Mobility and reactivity of oxygen from Pt-O-Mn sites associated with cryptomelane phase may be responsible for increased activity.
PB  - Elsevier
T2  - Applied Catalysis B-Environmental
T1  - Catalytic activity of Pt catalysts promoted by MnOx for n-hexane oxidation
VL  - 107
IS  - 3-4
SP  - 327
EP  - 332
DO  - 10.1016/j.apcatb.2011.07.032
ER  - 

@article{
author = "Anic, Mirjana and Radić, Nenad and Grbić, Boško and Dondur, Vera and Damjanović, Ljiljana and Stoychev, Dimitar and Stefanov, Plamen",
year = "2011",
abstract = "The deep oxidation of n-hexane was studied over Pt catalysts with small and large Pt crystallites, promoted by MnOx. The Mn was deposited on the Pt/Al2O3 by deposition-precipitation method using two alkalis, ammonia and dimethylamine. The strength of the base influenced morphology and performances of Mn-Pt catalysts. Ammonia formed mostly spherical structure of manganese oxide, while dimethylamine created fibrous needle-like shape of MnOx, typical for cryptomelane phase of manganese oxide. This was confirmed by XPS results that show an oxidation state of Mn close to that for cryptomelane. The Pt-Mn catalysts were more active than catalysts containing Pt only. Promoting effect of MnOx is more pronounced for larger Pt crystallites. Among Pt-Mn samples, catalysts synthesized with dimethylamine exhibited the highest activities. Mobility and reactivity of oxygen from Pt-O-Mn sites associated with cryptomelane phase may be responsible for increased activity.",
publisher = "Elsevier",
journal = "Applied Catalysis B-Environmental",
title = "Catalytic activity of Pt catalysts promoted by MnOx for n-hexane oxidation",
volume = "107",
number = "3-4",
pages = "327-332",
doi = "10.1016/j.apcatb.2011.07.032"
}

Anic, M., Radić, N., Grbić, B., Dondur, V., Damjanović, L., Stoychev, D.,& Stefanov, P.. (2011). Catalytic activity of Pt catalysts promoted by MnOx for n-hexane oxidation. in Applied Catalysis B-Environmental
Elsevier., 107(3-4), 327-332.
https://doi.org/10.1016/j.apcatb.2011.07.032

Anic M, Radić N, Grbić B, Dondur V, Damjanović L, Stoychev D, Stefanov P. Catalytic activity of Pt catalysts promoted by MnOx for n-hexane oxidation. in Applied Catalysis B-Environmental. 2011;107(3-4):327-332.
doi:10.1016/j.apcatb.2011.07.032 .

Anic, Mirjana, Radić, Nenad, Grbić, Boško, Dondur, Vera, Damjanović, Ljiljana, Stoychev, Dimitar, Stefanov, Plamen, "Catalytic activity of Pt catalysts promoted by MnOx for n-hexane oxidation" in Applied Catalysis B-Environmental, 107, no. 3-4 (2011):327-332,
https://doi.org/10.1016/j.apcatb.2011.07.032 . .