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《Chinese Journal of Explosives & Propellants》 2001-01
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Selective Nitration of Toluene with Nitric Acid on the Cross linked Pillared Bentonite Catalysts

L U·· Chun xu,PENG Xin hua (Nanjing University of Science and Technology,Nanjing 210094,China)  
Para selectivities oi toluene nitrations were enhanced by using nitric acid as nitrating agent in the presence of cross linked pillared bentonite catalysts.Ortho to para ratios were greatly below 1.67 as compared with sulfonitric acid.Of a range of NH + 4、H +、La 3+ modified aluminium cross linked bentonites,La 3+ modiried bentonite appears to be the optimum catalytic selectivity and reactivity,up to 0.75 in a ratio of ortho and para nitrotoluene.
【Fund】: 江苏省自然科学基金!(BK97133);; 教育部博士点基金资助课题
【CateGory Index】: O621.25
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