Article ID Journal Published Year Pages File Type
51619 Catalysis Communications 2008 4 Pages PDF
Abstract

Nitration of aromatic compounds with NO2/air catalyzed by sulfonic acid-functionalized ionic liquid under solvent-free conditions is reported. A variety of ionic liquids [BSPy][HSO4], [BSPy][TfO], and [BSPy][pTSA] ([BSPy] = N-(4-hydroxsulfonylbutyl) pyridinium) were prepared. Their acidities were further investigated by Hammett method and the acidity-catalytic relationship was discussed. It was found that satisfactory results were obtained with [BSPy][HSO4]. Ionic liquids could be conveniently separated with the products and reused for five times with excellent yield of mono-nitration products and para-selectivity.

Related Topics
Physical Sciences and Engineering Chemical Engineering Catalysis
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