Приказ основних података о документу
Mechanochemical synthesis of CaO·ZnO.K2CO3 catalyst: Characterization and activity for methanolysis of sunflower oil
Mehanohemijska sinteza CaO·ZnO.K2CO3, katalizatora - karakterizacija i aktivnost u metanolizi suncokretovog ulja
dc.creator | Kesić, Željka | |
dc.creator | Lukić, Ivana | |
dc.creator | Zdujić, Miodrag | |
dc.creator | Jovalekić, Čedomir | |
dc.creator | Liu, Hui | |
dc.creator | Skala, Dejan | |
dc.date.accessioned | 2021-03-10T12:40:42Z | |
dc.date.available | 2021-03-10T12:40:42Z | |
dc.date.issued | 2015 | |
dc.identifier.issn | 1451-9372 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2921 | |
dc.description.abstract | The goal of this study was to prepare a CaO·ZnO catalyst containing a small amount of K2CO3 and analyze its activity for biodiesel synthesis. The catalyst was prepared using the following procedure: CaO and ZnO (mole ratio of 1:2), water and K2CO3 (in various amounts) were mechanochemically treated and after milling heated at 700°C in air atmosphere for obtaining mixed CaO·ZnO/xK2CO3 oxides (x = 0, 1, 2 and 4 mol of K2CO3 per 10 mol of CaO). All the samples were characterized by X-ray diffraction (XRD), inductively coupled plasma (ICP), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), infrared spectroscopy (FTIR), scanning electron microscopy/ energy-dispersive spectroscopy (SEM/EDS), particle size laser diffraction (PSLD) distribution, solubility measurement of Ca, Zn and K ions in methanol as well as by determination of their alkalinity (Hammett indicator method). Prepared CaO·ZnO/xK2CO3 composite powders were tested as catalysts for methanolysis of sunflower oil at 70 °C using mole ratio of sunflower oil to methanol of 1:10 and with 2 mass% of catalyst based on oil weight. The presence of K2CO3 in prepared samples was found to increase the activity of catalyst, and that such effect is caused by homogeneous-heterogeneous catalysis of biodiesel synthesis. | en |
dc.description.abstract | Cilj ovih istraživanja bio je da se pripremi CaO·ZnO katalizator koji sadrži malu količinu K2CO3 i analizira njegova aktivnost u sintezi biodizela. Katalizator je pripremljen prema sledećoj proceduri: CaO i ZnO (molski odnos 1:2), voda i K2CO3 (u različitoj količini) su tretirani mehanohemijski i nakon mlevenja zagrevani na 700 °C u atmosferi vazduha da bi se dobila smeša oksida CaO·ZnO/xK2CO3 (x = 0, 1, 2 i 4 mol K2CO3 na 10 mol CaO). Karakterizacija pripremljenih katalizatora izvršena je metodama rendgenske difrakcije (XRD), indukovane kuplovane plazme (ICP), spektroskopije fotoelektrona dobijenih X-zracima (XPS), termogravimetrijske analize (TGA), infracrvene spektroskopije (FTIR), skenirajuće elektronske mikroskopije i energetske disperzione spektroskopije (SEM/EDS), raspodele veličine čestica (PSLD), merenjem rastvorljivosti katalizatora odnosno Ca, Zn i K jona u metanolu, kao i određivanjem njihove baznosti (metodom Hametovih indikatora). Pripremljeni CaO·ZnO/xK2CO3 kompozitni prahovi testirani su kao katalizatori u reakciji metanolize suncokretovog ulja na 70 °C, pri molarnom odnosu suncokretovog ulja i metanola od 1:10 i sa 2 mas.% katalizatora u odnosu na masu ulja. Pokazano je da prisustvo K2CO3 u pripremljenim uzorcima povećava aktivnost katalizatora i da je takav efekat posledica homogeno-heterogene katalize u sintezi biodizela. | sr |
dc.publisher | Association of the Chemical Engineers of Serbia | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45001/RS// | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.source | Chemical Industry & Chemical Engineering Quarterly | |
dc.subject | mechanochemical synthesis | en |
dc.subject | CaO | en |
dc.subject | ZnO | en |
dc.subject | K2CO3 | en |
dc.subject | mixed oxides | en |
dc.subject | biodiesel synthesis | en |
dc.subject | mehanohemijska sinteza | sr |
dc.subject | CaO | sr |
dc.subject | ZnO | sr |
dc.subject | K2CO3 | sr |
dc.subject | mešani oksidi | sr |
dc.subject | sinteza biodizela | sr |
dc.title | Mechanochemical synthesis of CaO·ZnO.K2CO3 catalyst: Characterization and activity for methanolysis of sunflower oil | en |
dc.title | Mehanohemijska sinteza CaO·ZnO.K2CO3, katalizatora - karakterizacija i aktivnost u metanolizi suncokretovog ulja | sr |
dc.type | article | |
dc.rights.license | BY-NC-ND | |
dc.citation.epage | 12 | |
dc.citation.issue | 1-1 | |
dc.citation.other | 21(1-1): 1-12 | |
dc.citation.rank | M23 | |
dc.citation.spage | 1 | |
dc.citation.volume | 21 | |
dc.identifier.doi | 10.2298/CICEQ131026041K | |
dc.identifier.fulltext | http://TechnoRep.tmf.bg.ac.rs/bitstream/id/972/2918.pdf | |
dc.identifier.scopus | 2-s2.0-84946185788 | |
dc.identifier.wos | 000354755400001 | |
dc.type.version | publishedVersion |