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    Anodic and Cathodic Processes In Piperidinium-Based Ionic Liquid Mixtures With AlCl3

    Access Status
    Fulltext not available
    Authors
    Risbud, Mandar
    Kononov, R.
    Bucknall, M.
    Welch, B.
    McCann, J.
    Skyllas-Kazacos, M.
    Date
    2012
    Type
    Journal Article
    
    Metadata
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    Citation
    Risbud, M. and Kononov, R. and Bucknall, M. and Welch, B. and McCann, J. and Skyllas-Kazacos, M. 2012. Anodic and Cathodic Processes In Piperidinium-Based Ionic Liquid Mixtures With AlCl3. European Chemical Bulletin. 1 (10): pp. 422-433.
    Source Title
    European Chemical Bulletin
    Additional URLs
    http://www.eurchembull.com/index.php/ECB/article/view/126/pdf
    ISSN
    2063-5346
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/41130
    Collection
    • Curtin Research Publications
    Abstract

    Low temperature molten salts based on ionic liquids have received considerable attention over the last 3 decades as potential alternative solvents for aluminium reduction. Recent reports in the literature have identified 1-propyl-1-methylpiperidinium bis(trifluoromethylsulfonyl) amide ([C3mpip][NTf2]) as a promising candidate for low temperature aluminium reduction processes. The formation of aluminium metal deposition was confirmed in these studies by both visual inspection and SEM-EDX analysis in the selected mixtures with AlCl3, but little is known about the anodic processes occurring in the cell. This work presents the results of a preliminary electrochemical study of the anodic and cathodic reactions occurring in the ionic liquid mixtures 1-propyl-1-methylpiperidinium bis(trifluoromethylsulfonyl) amide ([C3mpip][NTf2]) with AlCl3 at different temperatures, concentrations and electrode materials. Analysis of voltammetric responses of [C3mpip][NTf2]-[AlCl3]x for x=0.3 indicated that the anodic process is limited by mass transport for this particular electrolyte composition. In addition, the formation of Cl2 was confirmed to take place at a dimensionally stable anode. Aluminium deposition experiments gave inconsistent results however and gas analysis indicated that the [C3mpip][NTf2]-[AlCl3]x mixture at a prolonged elevated temperature at least partially decomposes into fluoro-carbons and chloro-compounds.

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