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Article

Catalytic Elimination of Carbon Monoxide, Ethyl Acetate, and Toluene over the Ni/OMS-2 Catalysts

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Key Laboratory of Beijing on Regional Air Pollution Control, Department of Environmental Science, Faculty of Environment and Life, School of Environmental and Chemical Engineering, Beijing University of Technology, Beijing 100124, China
2
Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, and Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Sabine Valange
Catalysts 2021, 11(5), 581; https://doi.org/10.3390/catal11050581
Received: 8 April 2021 / Revised: 29 April 2021 / Accepted: 29 April 2021 / Published: 30 April 2021
(This article belongs to the Special Issue Advances in Catalytic Oxidation of Methane and Carbon Monoxide)
The Ni-loaded cryptomelane-type manganese oxide octahedral molecular sieve (OMS-2) catalysts (xNi/OMS-2: x = 1, 3, 5, and 10 wt%) were prepared by a pre-incorporation method. Physicochemical properties of the as-synthesized materials were characterized by means of various techniques, and their catalytic activities for CO, ethyl acetate, and toluene oxidation were evaluated.The loading of Ni played an important role in improving physicochemical propertiesof OMS-2. Among all of the samples, 5Ni/OMS-2 exhibited the best catalytic activity, with the T90 being 155 °C for CO oxidation at a space velocity (SV) of 60,000 mL/(g·h), 225 °C for ethyl acetate oxidation at an SV of 240,000 mL/(g·h), and 300 °C for toluene oxidation at an SV of 240,000 mL/(g·h), which was due to its high Mn3+ content and Oads concentration, good low-temperature reducibility and lattice oxygen mobility, and strong interaction between the Ni species and the OMS-2 support. In addition, catalytic mechanisms of the oxidation of three pollutants over 5Ni/OMS-2 were also studied. The oxidation of CO, ethyl acetate, and toluene over the catalysts took place first via the activated adsorption, then intermediates formation, and finally complete conversion of the formed intermediates to CO2 and H2O. View Full-Text
Keywords: cryptomelane-typemanganese oxide octahedral molecular sieve; supported nickel catalyst; CO oxidation; ethyl acetate oxidation; toluene oxidation cryptomelane-typemanganese oxide octahedral molecular sieve; supported nickel catalyst; CO oxidation; ethyl acetate oxidation; toluene oxidation
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MDPI and ACS Style

Dong, N.; Chen, M.; Ye, Q.; Zhang, D.; Dai, H. Catalytic Elimination of Carbon Monoxide, Ethyl Acetate, and Toluene over the Ni/OMS-2 Catalysts. Catalysts 2021, 11, 581. https://doi.org/10.3390/catal11050581

AMA Style

Dong N, Chen M, Ye Q, Zhang D, Dai H. Catalytic Elimination of Carbon Monoxide, Ethyl Acetate, and Toluene over the Ni/OMS-2 Catalysts. Catalysts. 2021; 11(5):581. https://doi.org/10.3390/catal11050581

Chicago/Turabian Style

Dong, Ning, Mengyue Chen, Qing Ye, Dan Zhang, and Hongxing Dai. 2021. "Catalytic Elimination of Carbon Monoxide, Ethyl Acetate, and Toluene over the Ni/OMS-2 Catalysts" Catalysts 11, no. 5: 581. https://doi.org/10.3390/catal11050581

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