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Issue 12, 2009
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Alkylation of isobutane with 2-butene using ionic liquids as catalyst

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Abstract

Alkylation of isobutane with 2-butene was performed in a batch reactor using the ionic liquid 1-n-octyl-3-methylimidazolium bromide aluminium chloride ([OMIM]Br-AlCl3) pure, and in a mixture with compounds containing SO3H-groups. The acidity of the ionic liquid (IL) was modified by the addition of acid cation exchange resins (dry or with a small amount of water), or by the addition of a second IL ([(HO3SBu)MIM]HSO4). A high content of the desired trimethylpentanes (up to 64%) and thus a high research octane number (RON up to 96) of the alkylate was obtained. The reusability of the IL systems was studied and compared with a catalyst commercially used at present (H2SO4).

Graphical abstract: Alkylation of isobutane with 2-butene using ionic liquids as catalyst

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Publication details

The article was received on 13 Jul 2009, accepted on 07 Sep 2009 and first published on 07 Oct 2009


Article type: Paper
DOI: 10.1039/B913872B
Citation: Green Chem., 2009,11, 1961-1967
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    Alkylation of isobutane with 2-butene using ionic liquids as catalyst

    T. L. T. Bui, W. Korth, S. Aschauer and A. Jess, Green Chem., 2009, 11, 1961
    DOI: 10.1039/B913872B

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