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2293215 
Journal Article 
Metal Ion-Exchanged Bentonites as Useful Solid Catalysts for Regioselective Nitration of Toluene 
Zhang, H; Peng, X; Zhao, S 
2013 
Yes 
Asian Journal of Chemistry
ISSN: 0970-7077
EISSN: 0975-427X 
25 
6 
3511-3512 
WOS:000317245900140 
Metal ion exchanged bentonites were found to be efficient catalysis in regioselective nitration of toluene when using nitric acid as nitrating agent. Fifteen mental ion-exchanged bentonites were tested as catalysts toward a para position considerably. Out of a range of catalysts tried silver supported bentonite appeared of higher regioselectivity of ortho-para ratio of 0.64 in an acceptable yield of 45 %. The possible recovery and reuse of catalyst suggest that system would be commercially viable 
Bentonite; Toluene; Nitrotoluene; Regioselective nitration