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http://dx.doi.org/10.5012/bkcs.2012.33.10.3373

Reusable and Efficient Polystryrene-supported Acidic Ionic Liquid Catalyst for Mononitration of Aromatic Compounds  

Li, Li Xia (School of Environment, Jiangsu University)
Ling, Qi Long (School of Chemical Engineering, Nanjing University of Science and Technology)
Liu, Zu Liang (School of Chemical Engineering, Nanjing University of Science and Technology)
Xing, Xiao Dong (School of Chemical Engineering, Nanjing University of Science and Technology)
Zhu, Xiao Qin (School of Chemical Engineering, Nanjing University of Science and Technology)
Meng, Xiao (School of Chemical Engineering, Nanjing University of Science and Technology)
Publication Information
Bulletin of the Korean Chemical Society / v.33, no.10, 2012 , pp. 3373-3377 More about this Journal
Abstract
A series of polystyrene-supported 1-(propyl-3-sulfonate)-3-methyl-imidazolium hydrosulfate acidic ionic liquid (PS-$[SO_3H-PMIM][HSO_4]$) catalysts were prepared and tested for mononitration of simple aromatics compounds with nitric acid. It was found that the reactivity of the catalysts increased with increasing $[SO_3H-PMIM][HSO_4]$ content. The para-selectivity was not only related to the $[SO_3H-PMIM][HSO_4]$ content but also the substituent groups in aromatics. A reaction mechanism of nitration over this new catalyst was proposed. The catalytic activity of this catalyst decreased slightly after fifth runs in the synthesis of nitrotoluene.
Keywords
Polystyrene-supported acidic ionic liquid; Nitration reaction; Simple aromatics;
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