Abstract

In this paper, two-step method was used to synthesize 5,10,15,20-tetraphenyl-21H,23H-porphine vanadium(IV) oxide (VOTPP) and toluene catalytic oxidation was explored. The result showed that this catalyst led to benzoic acid as the main product and successfully simulated the reaction of toluene oxidation with the catalytic center of P-450 enzyme. Through testing the reaction conditions including used catalyst amount, temperature, pressure, and reaction time, the optimum reaction conditions were: 0.3 g VOTPP in 100 cm³ of toluene, 145 °C, 0.8 MPa, and 4 h. The conversion of toluene was 23.0% and the selectivity of benzoic acid could reach 86.0%. Its benefits lie in no solvent, mild reaction conditions, and no toxic acidic waste, making toluene oxidation a green process.

Graphic abstract

中文翻译：

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改进方法合成的VOTPP催化剂将甲苯氧化为苯甲酸

摘要

本文采用两步法合成了5,10,15,20-四苯基-21 H，23 H-卟啉氧化钒（VOTPP），并研究了甲苯的催化氧化作用。结果表明，该催化剂以苯甲酸为主要产物，成功模拟了甲苯氧化与P-450酶催化中心的反应。通过测试反应条件，包括催化剂用量，温度，压力和反应时间，最佳反应条件为：100 cm ^3中0.3 g VOTPP甲苯，145°C，0.8 MPa和4 h。甲苯的转化率为23.0％，苯甲酸的选择性可以达到86.0％。它的优点在于无溶剂，温和的反应条件和无毒的酸性废物，使甲苯氧化成为绿色工艺。

图形摘要