Journal of Guangdong University of Technology ›› 2017, Vol. 34 ›› Issue (05): 96-102.doi: 10.12052/gdutxb.170068

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High Efficiency Selective Oxidation of Toluene to Benzoic Acid with Manganese Oxides

Liao Shu-huan, Cheng Gao, He Bin-bin, Yu Lin   

  1. School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
  • Received:2017-03-20 Online:2017-09-09 Published:2017-07-10

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Abstract: Selective oxidation of toluene to benzoic acid is an important reaction in small molecular organic chemical, which is a most efficient method for increasing addition value of cheap aromatic hydrocarbon. In four different temperatures, some reactants with same proportion are taken as the raw material, investigating the effect of temperature on catalyst forming. The selective catalytic oxidation of benzoic acid and toluene in liquid phase as the probe reaction, and obtaining manganese oxides are characterized by XRD, SEM, BET, H2-TPR. According to results of characterization, the reasons of difference catalytic performance have been resolved. In reflux reaction system with mild reaction conditions, finally, the manganese oxides by 80℃ synthesizing obtain good catalytic performance and excellent selectivity of target product. It is shown that the toluene conversion is 44.67% and selectivity of benzoic acid is 79.18% in optimal reaction conditions.

Key words: manganese oxides, toluene, reflux reaction system, benzoic acid

CLC Number: 

  • O625.5
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[1] FU Zhi-Wei, CHENG Gao, LIN Ting, SUN Ming, YU Lin. The Preparation of MnO2 and Application in Catalytic Combustion of Toluene [J]. Journal of Guangdong University of Technology, 2016, 33(02): 85-90.
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