Toluene oxyfunctionalization with air over metalloporphyrins and reaction condition optimization

作者：Li, Yongfei; Yan, Xuhui; Jiang, Guofang; Liu, Qiang; Song, Jianxin; Guo, Cancheng^*

来源：Chinese Journal of Chemical Engineering, 2007, 15(3): 453-457.

DOI：10.1016/S1004-9541(07)60107-4

• toluene
• metalloporphyrins
• catalysis
• aerobic oxidation
• optimization

Catalytic activities of a series of metalloporphyrin complexes in selective aerobic oxidation of toluene were investigated. The effects of different central metal ions in metalloporphyrins [T(p-Cl)PPMCl (M=Fe,Co,Mn,Cu)] on the reaction course had been examined and it was found that T(p-Cl)PPCu presented the highest catalytic activity in the reaction. The reaction conditions of toluene oxidation were optimized by using orthogonal experiment design. Five relevant factors were investigated: temperature, air pressure, catalyst loading, air flow rate and reaction time. The effects of the five factors on both toluene conversion and total yield of benzaldehyde and benzyl alcohol were discussed. The research results showed that the reaction temperature was the most significant factor influencing toluene oxidation. On the basis of the margin analysis, the optimum conditions for the toluene conversion and the total yield of benzaldehyde and benzyl alcohol respectively were achieved, under which the toluene conversion was up to 14.67% and the total yield of benzaldehyde and benzyl alcohol reached 5.89%.

• 出版日期2007-6
• 单位湖南大学