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Issue 20, 2017
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Bio-based 1,3-diisobutyl imidazolium hydrogen oxalate [iBu2IM](HC2O4) as CO2 shuttle

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Abstract

This manuscript describes the using of biosourced L-valine, oxalic acid and glyoxal to produce a biobased imidazolium hydrogen oxalate [iBu2IM](HC2O4) which is converted to its related hydrogen carbonate salt by a simple electrolysis without using strong base. The addition of weak protic acids to the latter compound leads to a rapid and quantitative CO2 release with formation of the starting hydrogen oxalate salt or a new halide free bio-based ionic liquid [iBu2IM](AcO) which is able to adsorb reversibly the CO2 at room temperature. The protonation reactions, combined with electrolysis, could then be a promising alternative solution for storage and transport of CO2. They are indeed fast and use a thermally and air stable material produced from sustainable resources which are easily recycled by a low energy consuming process using non-expensive and corrosion-resistant equipment.

Graphical abstract: Bio-based 1,3-diisobutyl imidazolium hydrogen oxalate [iBu2IM](HC2O4) as CO2 shuttle

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Publication details

The article was received on 19 Jul 2017, accepted on 09 Sep 2017 and first published on 21 Sep 2017


Article type: Paper
DOI: 10.1039/C7GC02167D
Citation: Green Chem., 2017,19, 4912-4918
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    Bio-based 1,3-diisobutyl imidazolium hydrogen oxalate [iBu2IM](HC2O4) as CO2 shuttle

    G. de Robillard, A. H. Fournier, H. Cattey, C. H. Devillers and J. Andrieu, Green Chem., 2017, 19, 4912
    DOI: 10.1039/C7GC02167D

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