%0 Journal Article
%T Synthesis and Characterization of Novel Brønsted-Lewis Acidic Ionic Liquids
%A Hualiang An
%A Lijuan Kang
%A Wei Gao
%A Xinqiang Zhao
%A Yanji Wang
%J Green and Sustainable Chemistry
%P 32-37
%@ 2160-696X
%D 2013
%I Scientific Research Publishing
%R 10.4236/gsc.2013.32A005
%X <p>
	<span>To meet the demands of some kinds
of reactions catalyzed simultaneously by </span><span>Br?nsted acid
and Lewis acid catalyst, two novel Br?nsted-</span><span>Lewis acidic</span><span> ionic
liquids, 1-carboxyethylene-3-(4-zinc acetate sulfobutyl) imidazolium chloride ([CH<sub>3</sub>COO-Zn-O<sub>3</sub>S-bim-CH<sub>2</sub>CH<sub>2</sub>COOH]Cl)
and 1-(1,2-dicarboxy) ethylene-3-(4-zinc acetate sulfobutyl) imidazolium
chloride ([CH<sub>3</sub>COO-Zn-O<sub>3</sub>S-bim-C<sub>4</sub>H<sub>5</sub>O<sub>4</sub>]Cl)
were synthesized, in which both Br?nsted
and Lewis acidic sites exist</span><span>ed</span><span> in the cation</span><span>. The structures of the ionic
liquids were determined by means of
FT-IR, <sup>1</sup>H NMR and </span><a href=\"\"><span style=\"color:black;text-decoration:none;\">elemental analysis</span></a><span>. The </span><span>results
of Py-IR analysis indicated that the
two novel ionic liquids have
both Br?nsted and Lewis acid properties. The acid strength values (<i>H</i><sub>0</sub>) of the ionic liquids were
measured utilizing the UV-visible
spectroscopy combined with Hammett indicator method, and the acid amount of them was determined by acid-base titration.</span><span></span>
</p>
%K Br&#248
%K nsted-Lewis Acidic Ionic Liquids
%K Synthesis
%K Characterization
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=31978