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Bioresource Technology,Kinetics of esterification ....

已有 3390 次阅读 2012-4-4 00:28 |系统分类:论文交流| Hybrid, Biodiesel, Cation, ion-exchange, resin

Received 21 October 2011. Revised 9 February 2012. Accepted 21 February 2012.

Available online 2 March 2012.

 
Abstract

Hybrid catalytic membranes consisting of cation ion-exchange resin particles (CERP) and polyethersulfone

(PES) were prepared by immersion phase inversion and used as heterogeneous catalysts for the

esterification of acidified oil with methanol, ethanol, propanol and butanol.

The membranes were characterized by ion exchange capacity and swelling degree tests. The membranes

were annealed at different temperatures to improve catalytic activity and membranes annealed at 393 K had

the highest catalytic activity. Butanol allowed the highest free fatty acids (FFAs) conversion of 95.28%

since it has better miscibility than the other alcohols which strengthened mass and heat transfer.

Furthermore, pseudo-homogeneous kinetic models of the esterification of acidified oil with the four alcohols

were established according to the experimental data. The kinetic models can well predict the FFA conversion.

 

 

 

 

 



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