Catalytic etherification of bioglycerol with C4 fraction

Authors: Andrej Turan, Marek Hrivnák, Katarína Klepáčová, Alexander Kaszonyi, Dušan Mravec

Abstract:
The aimofthis work was to studypossibilities of glycerol etherspreparationfromglycerol andisobutylene by using industrially common resources. Therefore C4 petrochemicalfraction without 1,3-butadiene with different concentration of isobutylene has been used as alkylation agentfor etherification of pure glycerol and also glycerol from FAME production. It has been proved that using of C4 fractions with concentration of isobutylene over 40 wt% it is possible to obtain similar results in comparison with pure isobutylene. Over catalyst Amberlyst 35 dry the selectivity to higher ethers was 63.9% at the conversion of glycerol 59.1%. When bio-glycerol was etherified with this C4 fraction over the same catalyst the obtained results were similar. The reusability test of Amberlyst 35 when the pure glycerol was used showed moderate decrease of glycerol conversion and selectivity to higher ethers. The same test with bio-glycerol showed significant decrease of glycerol conversion and selectivity to higher ethers after third run.

Keywords:
Glycerol
Etherification
C4 fraction
Isobutylene
Oxygenated additives

Published in: Applied catalysis A: General   (Volume 468, Pages 1-474, 5 November 2013)

Publisher: Elsevier  

ISSN Information: 0926-860X

Catalytic etherification of bioglycerol with C4 fraction

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