| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Performance of CuSiO3-based Materials with Honeycomb Mesoporous Structure in Thermocatalytic Decomposition of NO |
| HUANG Lingyu1,2,LIAO Jifei1,2, ZHANG Qian2,*, FU Yan1,2, XIAO Wenyan1,2, ZHU Jie1,2, YANG Shubin1,2
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1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, University of Southwest Petroleum University, Chengdu 610500, China
2 The Center of New Energy Materials and Technology, School of New Energy and Materials, University of Southwest Petroleum University, Chengdu 610500, China |
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Abstract Thermocatalytic decomposition of NO has the advantages of zero pollution, economic cost-effectiveness and so on. It has become crucial for current research of NO thermocatalytic decomposition to develop catalysts which still maintain high activities within medium-low temperature range. Using tetraethyl orthosilicate as the silicon source, this work prepared SiO2 with special mesoporous structure by adjusting the template ratio, and further hydrothermally synthesized CuSiO3 with honeycomb mesoporous structure. Experimental results showed that by adjusting the template molar ratio (CTAB/triethylamine) to 1∶0.1, the highest catalytic activity of the produced CuSiO3 for NO decomposition could be achieved owing to its special honeycomb mesoporous structure. The dosage of Co into the most active CuSiO3 raised its NO thermocatalytic decomposition efficiency at 500 ℃ to over 90% which could maintain above 80% after 4 h usage. Compare to undoped CuSiO3, the presence of Co changed the crystallinity of the catalyst, resulting in more exposed active sites and improved reducibility.
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Published: 10 October 2024
Online: 2024-10-23
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| Fund:Marjor Science and Technology Project of Sichuan Province (20222DZX0042). |
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2024, Vol. 38 
