Title of article :
Relative efficiency of free fatty acid butyl esterification: Choice of catalyst and derivatisation procedure
Author/Authors :
Hallmann، نويسنده , , Christian and van Aarssen، نويسنده , , Ben G.K. and Grice، نويسنده , , Kliti Grice، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Pages :
7
From page :
14
To page :
20
Abstract :
The conversion efficiency of alkanoic, alkenoic, branched, alicyclic, aromatic, keto-substituted, and dioic carboxylic acids to their corresponding butyl esters was compared under different reaction conditions (time, temperature, catalyst). We show that boron trifluoride is generally a more efficient catalyst than sulphuric acid. However, optimum derivatisation conditions vary strongly for different acids and no single derivatisation protocol can be employed without certain losses. Therefore, care must be taken when the simultaneous quantitative analysis of different types of carboxylic acids in one sample is envisaged. Addition of water-scavenging reagents to the reaction mixture caused the formation of artefacts and selectively decreased reaction yields.
Keywords :
Butyl ester , Fischer esterification , Boron trifluoride , Carboxylic acid , Derivatisation
Journal title :
Journal of Chromatography A
Serial Year :
2008
Journal title :
Journal of Chromatography A
Record number :
1510991
Link To Document :
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