Fig. 3 The performance and reaction process of the catalytic oxidation of benzene to phenol over FeN4/GN catalysts. The performance and reaction process.

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Fig. 3 The performance and reaction process of the catalytic oxidation of benzene to phenol over FeN4/GN catalysts. The performance and reaction process of the catalytic oxidation of benzene to phenol over FeN4/GN catalysts. (A) The performance of the direct oxidation of benzene to phenol by FeN4/GN samples compared with GF, GN, and FePc. Reaction conditions: 50 mg of catalyst, 0.4 ml of benzene, 6 ml of H2O2 (30%), and 3 ml of CH3CN in a pressure vessel at 25°C for 24 hours. (B) The phenol yield of FeN4/GN-2.7 for the direct oxidation of benzene to phenol with different reaction times. (C and D) Fe K-edge XANES (C) and FT EXAFS (D) signals of FeN4/GN samples with H2O2 treatment in comparison to their corresponding original samples. Dehui Deng et al. Sci Adv 2015;1:e1500462 Copyright © 2015, The Authors