The tungsten heteropolyacid supported on activated bentonites as catalyst for selective oxidation of 2-propanol
Samo za registrovane korisnike
2015
Autori
Rožić, LjiljanaGrbić, Boško
Petrović, Srđan
Radić, Nenad
Damjanović, Ljiljana
Vuković, Zorica
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
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 o...f 343-553 K. An increase of HPW loading improves selectivity towards acetone formation.
Ključne reči:
Inorganic compounds / Oxidation / Desorption / Thermogravimetric analysis (TGA) / Differential scanning calorimetry (DSC) / Infrared spectroscopy (IR)Izvor:
Materials Chemistry and Physics, 2015, 167, 42-48Izdavač:
- Elsevier Science Sa, Lausanne
Finansiranje / projekti:
- Razvoj efikasnijih hemijsko-inženjerskih procesa zasnovan na istraživanjima fenomena prenosa i principima intenzifikacije procesa (RS-172022)
- Hemijsko i strukturno dizajniranje nanomaterijala za primenu u medicini i inženjerstvu tkiva (RS-172026)
- Dinamika nelinearnih fizičkohemijskih i biohemijskih sistema sa modeliranjem i predviđanjem njihovih ponašanja pod neravnotežnim uslovima (RS-172015)
- Porozni materijali na bazi oksida u zaštiti životne sredine od genotoksičnih supstanci (RS-172018)
- Proučavanje fizičkohemijskih i biohemijskih procesa u životnoj sredini koji utiču na zagađenje i istraživanje mogućnosti za minimiziranje posledica (RS-172001)
- Nanostrukturni funkcionalni i kompozitni materijali u katalitičkim i sorpcionim procesima (RS-45001)
DOI: 10.1016/j.matchemphys.2015.09.040
ISSN: 0254-0584
WoS: 000366070500007
Scopus: 2-s2.0-84960145131
Institucija/grupa
IHTMTY - 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 . .