Subscribe Now Subscribe Today
Science Alert
FOLLOW US:     Facebook     Twitter
Curve Top
Journal of Applied Sciences
  Year: 2010 | Volume: 10 | Issue: 21 | Page No.: 2633-2637
DOI: 10.3923/jas.2010.2633.2637
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail
Glycerol Etherification by tert-Butanol Catalyzed by Sulfonated Carbon Catalyst
Jidon Janaun and Naoko Ellis

The recent discovery of sulfonated carbon catalyst made from sugar attracts attention owing to its renewable source. The sulfonated carbon catalyst shows higher reactivity on esterification and transesterification reactions over the conventional solid acid catalysts such as nobic acid and amberlyst. These findings are remarkable because the sulfonated carbon catalyst has a surface area much smaller than any other solid acid catalysts tested for esterification and transesterification reactions. This study reports the characteristics of the sulfonated carbon catalyst and its reactivity on glycerol etherification by tert-butanol. Sulfonated carbon catalyst was prepared by sulphonation of the sugar char, prepared by pyrolyzing sugar (D-glucose) at 400°C for 15 h under nitrogen flow in a tube furnace. The catalyst was characterized by specific surface area, thermo-gravimetric analysis, FT-IR and total acidity, which showed that the sulfonated carbon catalyst has a surface area of less than 1 m2 g-1 and decomposed under inert gas at around 236°C. The catalyst has a total acidity of 4 mmol g-1, mainly contributed by -SO3 moiety as indicated by the FT-IR analysis. Etherification sample analyzed on GC-MS showed the presence of mono-glyceryl ethers isomers and di-glyceryl ether isomers; however, tri-glyceryl ether was not detected. The capability of the catalyst to promote the production of glyceryl ethers is a new application of the newly discovered sulfonated carbon catalyst; however, more experiments are required to elucidated catalyst reactivity, stability and selectivity under different reaction conditions. Di-glyceryl ethers are useful products in many applications such as biodiesel fuel additives.
PDF Fulltext XML References Citation Report Citation
How to cite this article:

Jidon Janaun and Naoko Ellis, 2010. Glycerol Etherification by tert-Butanol Catalyzed by Sulfonated Carbon Catalyst. Journal of Applied Sciences, 10: 2633-2637.

DOI: 10.3923/jas.2010.2633.2637








Curve Bottom