INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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Preparation and Adsorption Properties of Porous Mo2C/C Composite Ceramic Materials |
HE Wenzhi, DENG Chengji, DING Jun, YU Chao, WANG Xing, ZHU Hongxi
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The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China |
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Abstract Porous Mo2C/C composite ceramic materials were prepared by using carbonized pine wood as carbon template, Mo powder as molybdenum source, and ferric nitrate as catalyst. The effects of catalyst content, reaction temperature and holding time on the phase composition and microstructure of porous Mo2C/C composite ceramic materials were investigated, and the adsorption performance of materials for CO2 was explored. The results show that the addition of 4% (mass fraction) catalyst promotes the formation of Mo2C in the material, and its morphology is mainly dendri-tic, while the excessive addition of catalyst can lead to agglomeration of Mo2C grains. The sintering temperature of 1 150 ℃ and the holding time of 4 h are beneficial to the formation of Mo2C in the material. At the same time, the prepared porous Mo2C/C composite ceramic materials exhibit good CO2 adsorption performance, and its adsorption capacity is 52 cm3·g-1.
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Published: 25 December 2021
Online: 2021-12-27
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Fund:This work was financially supported by the National Natural Science Foundation of China (U20A20239), the Natural Science Foundation of Hubei Province (2020CFB692) and WUST National Defence Pre-research Foundation (GF202001). |
About author: Wenzhi He, a postgraduate in Wuhan University of Science and Technology. His research interests focus on porous biomass composite materials. |
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