多孔Mo_(2)C/C复合陶瓷材料的制备及吸附性能  

Preparation and Adsorption Properties of Porous Mo_(2)C/C Composite Ceramic Materials

作　　者：贺文志 邓承继[1] 丁军[1] 余超[1] 王杏[1] 祝洪喜[1] 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)

机构地区：[1]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

出　　处：《材料导报》2021年第24期24052-24056,共5页Materials Reports

基　　金：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)。

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Mo_(2)C/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Mo_(2)C/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CO_(2)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Mo_(2)C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Mo_(2)C晶粒团聚。1150℃的烧成温度及保温4 h的条件有利于材料中Mo_(2)C的生成,制备的多孔Mo_(2)C/C复合陶瓷材料具有优异的CO_(2)吸附性能,其吸附量为52cm^(3)·g^(-1)。Porous Mo_(2)C/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 Mo_(2)C/C composite ceramic materials were investigated,and the adsorption performance of materials for CO_(2)was explored.The results show that the addition of 4%(mass fraction)catalyst promotes the formation of Mo_(2)C in the material,and its morphology is mainly dendri-tic,while the excessive addition of catalyst can lead to agglomeration of Mo_(2)C grains.The sintering temperature of 1150℃and the holding time of 4 h are beneficial to the formation of Mo_(2)C in the material.At the same time,the prepared porous Mo_(2)C/C composite ceramic materials exhibit good CO_(2)adsorption performance,and its adsorption capacity is 52cm^(3)·g^(-1).

关 键 词：催化剂 碳化钼 多孔材料 显微结构 吸附性 

分 类 号：TQ174[化学工程—陶瓷工业]