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High Catalytic Performance of Mn-Doped Ce-Zr Catalysts for Chlorobenzene Elimination

1
College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, China
2
School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 210009, China
3
National Supervision and Testing Center of Fine Chemicals, Taizhou 225300, China
4
School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(5), 675; https://doi.org/10.3390/nano9050675
Received: 11 March 2019 / Revised: 2 April 2019 / Accepted: 16 April 2019 / Published: 1 May 2019
(This article belongs to the Special Issue Nanomaterials for Catalysis and Pollution Abatement)
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Abstract

Mn-Ce-Zr-O catalysts doped with varying Mn content were prepared and assessed for the catalytic combustion of chlorobenzene (CB). Nanosized MCZ-0.67 catalyst with amorphous phase exhibited a high and stable catalytic activity among the studied catalysts, achieving 90% CB conversion at 226 °C and withstanding stability tests, including time-based stability and the successive influence of various operating conditions. Meanwhile, the MCZ-0.67 catalyst used showed good recyclability by calcination in air. Characterization results suggested that Mn doping played a dominant role in improving the catalytic performance, resulting in larger surface area, better redox properties and greater amounts of surface active oxygen. In addition, the introduction of Zr was also indispensable for maintaining the good catalytic performance of catalysts. Finally, trace amounts of polychlorinated by-products during CB oxidation were monitored and the oxidation process was discussed. View Full-Text
Keywords: MnOx-CeO2-ZrO2; catalytic combustion; chlorobenzene; active oxygen; product analysis MnOx-CeO2-ZrO2; catalytic combustion; chlorobenzene; active oxygen; product analysis
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Zhu, L.; Li, X.; Liu, Z.; Yao, L.; Yu, P.; Wei, P.; Xu, Y.; Jiang, X. High Catalytic Performance of Mn-Doped Ce-Zr Catalysts for Chlorobenzene Elimination. Nanomaterials 2019, 9, 675.

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