多孔Mo2C/C复合陶瓷材料的制备及吸附性能

doi:10.11896/cldb.20120117

材料导报

2021, Vol. 35

Issue (24): 24052-24056 https://doi.org/10.11896/cldb.20120117

无机非金属及其复合材料

多孔Mo₂C/C复合陶瓷材料的制备及吸附性能

贺文志, 邓承继, 丁军, 余超, 王杏, 祝洪喜

武汉科技大学省部共建耐火材料与冶金国家重点实验室,武汉 430081

Preparation and Adsorption Properties of Porous Mo₂C/C Composite Ceramic Materials

HE Wenzhi, DENG Chengji, DING Jun, YU Chao, WANG Xing, ZHU Hongxi

The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China

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摘要以碳化后的松木作为碳模板、金属钼粉作为钼源、硝酸铁作为催化剂制备多孔Mo₂C/C复合陶瓷材料。研究催化剂含量、反应温度和保温时间对多孔Mo₂C/C复合陶瓷材料物相组成和显微结构的影响,并探索了材料对CO₂的吸附性能。结果表明:与不加催化剂相比,添加4%(质量分数)的催化剂可促进材料中Mo₂C的生成,其形貌主要为树枝状;而加入过量催化剂会导致生成的Mo₂C晶粒团聚。1 150 ℃的烧成温度及保温4 h的条件有利于材料中Mo₂C的生成,制备的多孔Mo₂C/C复合陶瓷材料具有优异的CO₂吸附性能,其吸附量为52 cm³·g^-1。

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关键词: 催化剂碳化钼多孔材料显微结构吸附性

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.

Key words: catalyst Mo₂C porous material microstructure adsorption

出版日期: 2021-12-25 发布日期: 2021-12-27

ZTFLH:

TQ174

基金资助: 国家自然科学基金(U20A20239);湖北省自然科学基金(2020CFB692);武汉科技大学国防预研基金(GF202001)

通讯作者: dingjun@wust.edu.cn

作者简介: 贺文志,武汉科技大学硕士研究生,主要研究方向为多孔生物质复合材料。丁军,武汉科技大学副教授、硕士研究生导师,入选湖北省“楚天学者计划”楚天学子。围绕耐火材料设计制备、耐火原料高值高效利用及材料性能表征等领域开展研究。主持和参与国家科技支撑计划、973计划前期专项和国家自然科学基金等10余项,以第一或通讯作者发表论文60余篇,其中SCI收录论文35篇,以第一完成人授权国家发明专利10项,合作制定行业标准1项,获省部级科研奖励4项。

引用本文:

贺文志, 邓承继, 丁军, 余超, 王杏, 祝洪喜. 多孔Mo₂C/C复合陶瓷材料的制备及吸附性能[J]. 材料导报, 2021, 35(24): 24052-24056.
HE Wenzhi, DENG Chengji, DING Jun, YU Chao, WANG Xing, ZHU Hongxi. Preparation and Adsorption Properties of Porous Mo₂C/C Composite Ceramic Materials. Materials Reports, 2021, 35(24): 24052-24056.

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http://www.mater-rep.com/CN/10.11896/cldb.20120117 或 http://www.mater-rep.com/CN/Y2021/V35/I24/24052

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