Abstract
The hydrolysis-driven redox co-precipitation method was employed to initiate the reduction of KMnO4 by H2O2, facilitated by the generation of H+ through the hydrolysis of cobalt salts. This controlled redox kinetics resulted in the formation of a Co–Mn solid solution catalyst, which exhibited high efficiency in the catalytic oxidation of toluene. T90 (the reaction temperature corresponding to a conversion of 90%) was only 214°C, at toluene concentration of 1000 ppm and weight hourly space velocity (WHSV) of 36 000 mL g–1 h–1. Moreover, the conversion of toluene was still more than 98% with a continuous reaction of 77 h at 260°C. Additionally, the conversion of toluene remained above 98% even after 4 h of 1,2-dichloroethane poisoning reaction at 260°C, indicating that the Co1Mn2 catalyst exhibited both high activity and resistance to toxicity.
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Funding
The work was financed by Chongqing science and Technology Bureau project “Development and application of high-performance honeycomb ceramic materials for industrial volatile organic compounds purification” (cstc2020jscx-msxmX0182).
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Wang, J., Zhao, S., Qin, R. et al. Highly Active and Highly Toxic Resistant of CoMnOX for Catalytic Oxidation of Toluene. Russ. J. Phys. Chem. 97, 3219–3226 (2023). https://doi.org/10.1134/S0036024424010114
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DOI: https://doi.org/10.1134/S0036024424010114