Current time in Korea 09:01 Aug 19 (Mon) Year 2019 KCS KCS Publications
KCS Publications
My Journal Log In Register
HOME > Search > Browsing(BKCS) > Archives

Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 35, Number 11
BKCSDE 35(11)
November 20, 2014 

 
Title
Lanthanum Oxide-catalyzed Transesterification of Dimethyl Carbonate with Glycerol: Effect of Surfactant
Author
Seung Rok Lim, Sang Deuk Lee, Hoon Sik Kim, Fidelis Stefanus Hubertson Simanjuntak*, Hyunjoo Lee*
Keywords
Glycerol, Dimethyl carbonate, Glycerol carbonate, Lanthanum oxide, Surfactant
Abstract
Three kinds of lanthanum oxides (La2O3) were synthesized from different methods and used as a catalyst in the transesterification of dimethyl carbonate (DMC) with glycerol for the synthesis of glycerol carbonate (GLC). Lanthanum oxide synthesized using a surfactant (S-La) showed a much higher GLC yield of 89.9% compared to other lanthanum oxides synthesized by calcination (C-La) and precipitation (P-La) at the reaction conditions of 90 °C, DMC/glycerol = 2, and catalyst/glycerol = 5 wt %. The best catalyst was obtained when the surfactant/La weight ratio was 12. XRD study revealed that S-La has large amount of monoclinic and hexagonal La2O2CO3 phases, which are assumed as active sites of the catalyst for the reaction.
Page
3163 - 3168
Full Text
PDF / Supporting Information