članak: 1 od 1  
Chemical Industry and Chemical Engineering Quarterly / CICEQ
2011, vol. 17, br. 3, str. 323-331
jezik rada: engleski
naučni članak
doi:10.2298/CICEQ101123018Z

Sinteza propilen-karbonata iz uree i 1,2-propilen glikola pomoću metalnih karbonata
School of Chemistry and Chemical Engineering, Southeast University, Jiangning District, Nanjing, P.R. China

e-adresa: dfwu@seu.edu.cn

Sažetak

Karbonati olova i cinka, uključujući i mešovite, pripremljeni su kao katalizatori alkoholize uree sa 1,2-propilenglikolom (PG) za sintezu propilen-karbonata (PC). Mešoviti karbonati su se pokazali kao bolji katalizatori od karbonata pojedinačnih metala zbog jakog sinergističkog efekta dve kristalne faze, hidrocinkita i olovnog karbonata. Najveći prinos PC se ostvaruje korišćenjem mešovitog karbonata sa odnosom Pb/Zn = 1:2, a zatim sa odnosom Pb/Zn = 1:3. Osim toga, Taguchi metod je korišćen za optimizaciju sinteze, radi poboljšanja prinosa PC. Pokazalo se da na prinos PC najveći uticaj ima temperatura, a zatim vreme reakcije, pri čemu su optimalni reakcioni uslovi: vreme reakcije 5 h, temperatura reakcije 180°C i količina katalizatora 1,8%, kada je ostvaren najveći prinos PC od 96,3%.

Ključne reči

alkohoiliza uree; propilen-karbonat; mešoviti karbonati; Taguchi-jeva metoda

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