耐高温高比表面氧化铝的研究进展  

Research Progress in Thermally Stable Alumina with High Specific Surface Area

作　　者：蒋玮[1] 张碧蓉[1] 吴东方[1] 周建成[1] 

机构地区：[1]东南大学化学化工学院,南京211189

出　　处：《材料导报（纳米与新材料专辑）》2008年第3期288-291,共4页

基　　金：江苏省自然科学基金(BK2007119);教育部新世纪优秀人才支持计划(NCET-07-0185)资助项目

摘　　要：耐高温高比表面氧化铝作为一种性能优异的催化剂载体在化工环保行业有着广泛的应用。详细综述了提高氧化铝耐高温性能的各种途径以及改性氧化铝的制备技术。同时还展望了耐高温高比表面氧化铝的发展。结果表明,SiO_2或La、Ce等稀土元素的加入能够有效抑制氧化铝向α-晶型转变和比表面积降低;与传统制备方法相比,溶胶-凝胶法和反相微乳液法能够显著提高改性氧化铝的耐高温性能。Thermally stable alumina with high specific surface area has been widely used as a catalyst or catalyst support in chemical industry and environmental protection. The strategies of improving the thermal stability of alumina are elucidated in this review, together with the methods for preparing doped alumina. It is found that the addition of SiO2 or rare earth elements, e. g. La and Ce can effectively suppress the phase transition from γ to α-Al2O3 and the decrease of the alumina＇s specific surface area, and that the sol-gel and reverse microemulsion methods are both better than the traditional methods for preparing doped alumina. Besides, the future prospects of the development of the thermally stable alumina with high specific surface area are proposed.

关 键 词：氧化铝 载体 耐高温 高比表面 

分 类 号：TQ133.1[化学工程—无机化工] TQ637