Biodiesel synthesis using K2CO3/Al-O-Si aerogel catalysts
Sinteza biodizela katalizovana alumosilikatnim aerogelom sa K2Co3
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In this study, catalysts for fatty acid methyl esters (FAME or biodiesel) synthesis with K2CO3 as the active component on an alumina/silica support were synthesized using the sol-gel method, which was followed by drying the 'dense' wet gels with supercritical carbon dioxide to obtain the aerogels. The prepared catalysts were characterized by XRD analysis, FTIR spectroscopy and N2 physisorption at 77 K, and tested in the methanolysis of sunflower oil. The effects of reaction variables, such as reaction time, temperature and methanol to oil molar ratio, on the yield of FAME were investigated. The aerogel catalysts with K2CO3 as the active component on an alumina/silica support exhibited good activity in the methanolysis of sunflower oil. The leaching of potassium when the catalyst was in contact with pure methanol under the working conditions of methanolysis was also tested in this study, indicating that it occurred only at higher temperatures, while at lower ones, it was negligible.
U ovom radu katalizator za sintezu metil estara masnih kiselina (MEMK ili biodizel) sa K2CO3 kao aktivnom komponentom na alumosilikatnom nosaču sintetizovan je sol-gel metodom nakon čega je dobijeni gel sušen uz prisustvo natkritičnog ugljen dioksida da bi se dobio aerogel. Za karakterizaciju sintetizovanih katalizatora korišćene su metode XRD, FTIR i N2 fizisorpcija na 77 K i katalizatori su testirani u reakciji metanolize suncokretovog ulja. Katalizator je testiran u reakciji metanolize suncekrotovog ulja i sintezi MEMK. Ispitan je uticaj različitih parametara kao što su vreme, temperatura i molarni odnos metanol : ulje na prinos MEMK. Aerogel katalizator sa K2CO3 kao aktivnom komponentom na alumosilikatnom nosaču pokazao je dobru katalitičku aktivnost u reakciji metanolize suncokretovog ulja. Izluživanje kalijuma u kontaktu sa metanolom na radnim uslovima metanolize takođe je testirano u ovom radu, pokazujući da ono postoji na višim temperaturama, dok je na nižim zanemarljivo.
Keywords:
biodiesel / aerogel / alumina/silica / K2CO3Source:
Journal of the Serbian Chemical Society, 2010, 75, 6, 789-801Publisher:
- Serbian Chemical Society, Belgrade
Funding / projects:
- Razvoj kontinualnih postupaka alkoholize biljnih ulja na niskoj, umerenoj i povišenoj temperaturi (RS-MESTD-MPN2006-2010-19062)
- Mezoporozni i nanomaterijali u katalitičkim i sorpcionim procesima (RS-MESTD-MPN2006-2010-166001)
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Lukić, Ivana AU - Krstić, Jugoslav AU - Glišić, Sandra AU - Jovanović, Dušan AU - Skala, Dejan PY - 2010 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1600 AB - In this study, catalysts for fatty acid methyl esters (FAME or biodiesel) synthesis with K2CO3 as the active component on an alumina/silica support were synthesized using the sol-gel method, which was followed by drying the 'dense' wet gels with supercritical carbon dioxide to obtain the aerogels. The prepared catalysts were characterized by XRD analysis, FTIR spectroscopy and N2 physisorption at 77 K, and tested in the methanolysis of sunflower oil. The effects of reaction variables, such as reaction time, temperature and methanol to oil molar ratio, on the yield of FAME were investigated. The aerogel catalysts with K2CO3 as the active component on an alumina/silica support exhibited good activity in the methanolysis of sunflower oil. The leaching of potassium when the catalyst was in contact with pure methanol under the working conditions of methanolysis was also tested in this study, indicating that it occurred only at higher temperatures, while at lower ones, it was negligible. AB - U ovom radu katalizator za sintezu metil estara masnih kiselina (MEMK ili biodizel) sa K2CO3 kao aktivnom komponentom na alumosilikatnom nosaču sintetizovan je sol-gel metodom nakon čega je dobijeni gel sušen uz prisustvo natkritičnog ugljen dioksida da bi se dobio aerogel. Za karakterizaciju sintetizovanih katalizatora korišćene su metode XRD, FTIR i N2 fizisorpcija na 77 K i katalizatori su testirani u reakciji metanolize suncokretovog ulja. Katalizator je testiran u reakciji metanolize suncekrotovog ulja i sintezi MEMK. Ispitan je uticaj različitih parametara kao što su vreme, temperatura i molarni odnos metanol : ulje na prinos MEMK. Aerogel katalizator sa K2CO3 kao aktivnom komponentom na alumosilikatnom nosaču pokazao je dobru katalitičku aktivnost u reakciji metanolize suncokretovog ulja. Izluživanje kalijuma u kontaktu sa metanolom na radnim uslovima metanolize takođe je testirano u ovom radu, pokazujući da ono postoji na višim temperaturama, dok je na nižim zanemarljivo. PB - Serbian Chemical Society, Belgrade T2 - Journal of the Serbian Chemical Society T1 - Biodiesel synthesis using K2CO3/Al-O-Si aerogel catalysts T1 - Sinteza biodizela katalizovana alumosilikatnim aerogelom sa K2Co3 EP - 801 IS - 6 SP - 789 VL - 75 UR - https://hdl.handle.net/21.15107/rcub_technorep_1600 ER -
@article{ author = "Lukić, Ivana and Krstić, Jugoslav and Glišić, Sandra and Jovanović, Dušan and Skala, Dejan", year = "2010", abstract = "In this study, catalysts for fatty acid methyl esters (FAME or biodiesel) synthesis with K2CO3 as the active component on an alumina/silica support were synthesized using the sol-gel method, which was followed by drying the 'dense' wet gels with supercritical carbon dioxide to obtain the aerogels. The prepared catalysts were characterized by XRD analysis, FTIR spectroscopy and N2 physisorption at 77 K, and tested in the methanolysis of sunflower oil. The effects of reaction variables, such as reaction time, temperature and methanol to oil molar ratio, on the yield of FAME were investigated. The aerogel catalysts with K2CO3 as the active component on an alumina/silica support exhibited good activity in the methanolysis of sunflower oil. The leaching of potassium when the catalyst was in contact with pure methanol under the working conditions of methanolysis was also tested in this study, indicating that it occurred only at higher temperatures, while at lower ones, it was negligible., U ovom radu katalizator za sintezu metil estara masnih kiselina (MEMK ili biodizel) sa K2CO3 kao aktivnom komponentom na alumosilikatnom nosaču sintetizovan je sol-gel metodom nakon čega je dobijeni gel sušen uz prisustvo natkritičnog ugljen dioksida da bi se dobio aerogel. Za karakterizaciju sintetizovanih katalizatora korišćene su metode XRD, FTIR i N2 fizisorpcija na 77 K i katalizatori su testirani u reakciji metanolize suncokretovog ulja. Katalizator je testiran u reakciji metanolize suncekrotovog ulja i sintezi MEMK. Ispitan je uticaj različitih parametara kao što su vreme, temperatura i molarni odnos metanol : ulje na prinos MEMK. Aerogel katalizator sa K2CO3 kao aktivnom komponentom na alumosilikatnom nosaču pokazao je dobru katalitičku aktivnost u reakciji metanolize suncokretovog ulja. Izluživanje kalijuma u kontaktu sa metanolom na radnim uslovima metanolize takođe je testirano u ovom radu, pokazujući da ono postoji na višim temperaturama, dok je na nižim zanemarljivo.", publisher = "Serbian Chemical Society, Belgrade", journal = "Journal of the Serbian Chemical Society", title = "Biodiesel synthesis using K2CO3/Al-O-Si aerogel catalysts, Sinteza biodizela katalizovana alumosilikatnim aerogelom sa K2Co3", pages = "801-789", number = "6", volume = "75", url = "https://hdl.handle.net/21.15107/rcub_technorep_1600" }
Lukić, I., Krstić, J., Glišić, S., Jovanović, D.,& Skala, D.. (2010). Biodiesel synthesis using K2CO3/Al-O-Si aerogel catalysts. in Journal of the Serbian Chemical Society Serbian Chemical Society, Belgrade., 75(6), 789-801. https://hdl.handle.net/21.15107/rcub_technorep_1600
Lukić I, Krstić J, Glišić S, Jovanović D, Skala D. Biodiesel synthesis using K2CO3/Al-O-Si aerogel catalysts. in Journal of the Serbian Chemical Society. 2010;75(6):789-801. https://hdl.handle.net/21.15107/rcub_technorep_1600 .
Lukić, Ivana, Krstić, Jugoslav, Glišić, Sandra, Jovanović, Dušan, Skala, Dejan, "Biodiesel synthesis using K2CO3/Al-O-Si aerogel catalysts" in Journal of the Serbian Chemical Society, 75, no. 6 (2010):789-801, https://hdl.handle.net/21.15107/rcub_technorep_1600 .