Journal
FUEL
Volume 309, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2021.122229
Keywords
Manganese; UIO-66; Hydroxyl radical; Toluene; Removal
Categories
Funding
- National Natural Science Foundation of China (NSFC) [51906114]
- Natural Science Foundation of Jiangsu Province [BK20180731]
- Foundation of State Key Laboratory of Coal Combustion [FSKLCCA2001]
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Novel manganese decorated UIO-66 catalysts (Mn/UIO-66) were prepared and applied to the vaporized hydrogen peroxide system for toluene removal, achieving an 82% removal efficiency. The catalytic performance was found to be correlated with the yield of hydroxyl radical and the catalyst specific surface area.
Gaseous toluene, one of the volatile organic compounds, has aroused wide concerns in China due to its growing emissions and harmfulness. Herein, novel manganese decorated UIO-66 catalysts (Mn/UIO-66) were prepared by hydrothermal synthesis and applied to the vaporized hydrogen peroxide system for toluene removal. TEM, BET, XRD, ICP, and XPS were used to analyze the chemical and physical characteristics of Mn/UIO-66. A toluene removal efficiency of 82% with the 3-Mn/UIO-66 catalyst in the vaporized hydrogen peroxide system could achieved. The effects of different reaction conditions (reaction temperature, hydrogen peroxide concentration, and initial toluene concentration) on toluene removal were determined. The yield of hydroxyl radical in the Mn/ UIO-66 catalyst combined with the hydrogen peroxide system was positively correlated with the Mn decorated ratio. Results suggested that the catalytic performance is related not only to the yield of hydroxyl radical but also to the catalyst specific surface. The intermediate products during toluene removal were analyzed by gas chromatography-mass spectrometry (GC-MS), and the possible reaction pathway of toluene removal was proposed.
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