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Citation: LIU Li-Rong, LÜ Chun-Xu, ZHANG Xiao-Bao. Nitration of Toluene in the Presence of Sodium Bisulfate Catalyst[J]. Chinese Journal of Applied Chemistry, ;2008, 25(7): 874-876. shu

Nitration of Toluene in the Presence of Sodium Bisulfate Catalyst

1.
a Department of Chemistry, Nanjing University of Science and Technology, Nanjing 210094;
2.
b Department of Chemical Engineering, Huaihai Institute of Technology, Lianyungang

Corresponding author: LÜ Chun-Xu,
Received Date: 16 August 2007
Available Online: 29 November 2007
Fund Project: 江苏省自然科学基金(BK99071)资助项目 (BK99071)

Mononitration of toluene with nitric acid in the presence of sodium bisulfate was studied.The results show that when the nitrated reaction temperature was controlled at 45℃,and the nitrated reaction time was 60 min,nitration of toluene with 95% nitric acid as nitrating reagent in the presence of acetic anhydride and 1.8 g sodium bisulfate catalyst exhibited a high regioselectivity,with ortho-para isomer ratio up to 1.09 in product distribution of toluene nitration,greatly below ortho-para isomer ratio of 1.67 in the product distribution of toluene nitration with sulfonitric acid as catalyst,and gave a yield of 99.9%.The catalyst could be reutilized up to five times with little decrease in activity.It is a kind of prowising nitrated reaction catalyst to replace sulfonitric acid,and has a vast value of industrialization exploitation.
- sodium bisulfate,
- catalyst,
- toluene,
- nitration
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