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    Relative efficiency of free fatty acid butyl esterification: choice of catalyst and derivatisation procedure

    Access Status
    Fulltext not available
    Authors
    Hallman, Christian
    Van Aarssen, Bernardus
    Grice, Kliti
    Date
    2008
    Type
    Journal Article
    
    Metadata
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    Citation
    Hallman, Christian and Van Aarssen, Bernardus and Grice, Kliti. 2008. Relative efficiency of free fatty acid butyl esterification: choice of catalyst and derivatisation procedure. Journal of Chromatography A. 1198-1199: pp. 14-20.
    Source Title
    Journal of Chromatography A
    DOI
    10.1016/j.chroma.2008.05.030
    ISSN
    00219673
    Faculty
    Department of Applied Chemistry
    School of Science
    Faculty of Science and Engineering
    Remarks

    The link to the journal's home page is: http://www.elsevier.com/wps/find/journaldescription.cws_home/502688/description#description

    Copyright © 2008 Elsevier B.V. All rights reserved.

    URI
    http://hdl.handle.net/20.500.11937/40815
    Collection
    • Curtin Research Publications
    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 andselectively decreased reaction yields.

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