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Solvent-Free Aerobic Oxidation of Toluene over Metalloporphyrin/NHPI/CTAB: Synergy and Mechanism

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Abstract

The solvent-free catalytic oxidation of toluene using molecular oxygen over metalloporphyrin/N-hydroxyphthalimide (NHPI)/cetyl trimethyl ammonium bromide (CTAB) has been developed. The results showed that the type of metalloporphyrin used, catalyst loading, reaction temperature, and the flow rate of oxygen all influenced the conversion of toluene and the selectivities of the products. Furthermore, a co-catalysis was observed between metalloporphyrin, NHPI, and CTAB. The toluene conversion was significantly improved from 10.74 to 40.95 mol% after adding CTAB to the reaction mixture. Based upon experimental observations, a possible mechanism was also proposed for the present oxidation.

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Acknowledgments

We thank the financial supports of National Natural Science Foundation of China (Grants CN21372068).

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, People’s Republic of China

    Wei Deng, Yan-ping Wan, Hui Jiang, Wei-Ping Luo, Ze Tan, Qing Jiang & Can-Cheng Guo

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  1. Wei Deng
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  2. Yan-ping Wan
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  3. Hui Jiang
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  4. Wei-Ping Luo
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  5. Ze Tan
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  6. Qing Jiang
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  7. Can-Cheng Guo
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Correspondence to Can-Cheng Guo.

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Deng, W., Wan, Yp., Jiang, H. et al. Solvent-Free Aerobic Oxidation of Toluene over Metalloporphyrin/NHPI/CTAB: Synergy and Mechanism. Catal Lett 144, 333–339 (2014). https://doi.org/10.1007/s10562-013-1104-5

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  • DOI: https://doi.org/10.1007/s10562-013-1104-5

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