Catalytic stability enhancement for pollutant removal via balancing lattice oxygen mobility and VOCs adsorption.

J Hazard Mater

Key Laboratory of Beijing on Regional Air Pollution Control, Beijing Key Laboratory for Green Catalysis and Separation, Center of Excellence for Environmental Safety and Biological Effects, Beijing University of Technology, Beijing 100124, China. Electronic address:

Published: February 2022


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Article Abstract

Manganese oxide supported Pt single atoms (Pt/MnO) are prepared by the molten salt method. Catalytic oxidation of toluene and iso-hexane, typical emissions from furniture paints industry, is tested. Pt/MnO shows poor and high catalytic stability for toluene and iso-hexane oxidation, respectively. Enhancement in the catalytic stability for toluene oxidation is observed after the hydrogen reduction treatment of Pt/MnO at 200 °C. The hydrogen treated catalyst possesses the weaker Mn-O bonds and lower coordination number of PtO, with superior mobility of lattice oxygen and appropriate toluene adsorption. Balancing lattice oxygen mobility and volatile organic compounds adsorption is important for the catalytic stability of Pt/MnO. For the oxidation of toluene and iso-hexane mixture, owing to the competitive adsorption, iso-hexane oxidation is greatly inhibited, while toluene oxidation is not influenced. The present Pt/MnO catalyst holds promising prospect in furniture paints industry applications because of high catalytic stability and water resistance ability.

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http://dx.doi.org/10.1016/j.jhazmat.2021.127337DOI Listing

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