六铝酸盐结构及其在高温反应中的应用  

The Structure of Hexaaluminate and Application in High-Temperature Reaction

作　　者：朱燕燕[1] 岳宗洋 边文 刘瑞林 马晓迅[1] 王晓东[2] Yanyan Zhu;Zongyang Yue;Wen Bian;Ruilin Liu;Xiaoxun Ma;Xiaodong Wang(School of Chemical Engineering,Northwest University,International Scientific and Technological Cooperation Base of MOST for Clean Utilization of Hydrocarbon Resources,Chemical Engineering Research Center of the Ministry of Education for Advanced Use Technology of Shanbei Energy,Shaanxi Research Center of Engineering Technology for Clean Coal Conversion,Collaborative Innovation Center for Development of Energy and Chemical Industry in Northern Shaanxi,Xi'an 710069,China;Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China)

机构地区：[1]西北大学化工学院国家碳氢资源清洁利用国际科技合作基地陕北能源先进化工利用技术教育部工程研究中心陕西省洁净煤转化工程技术研究中心陕北能源化工产业发展协同创新中心,西安710069 [2]中国科学院大连化学物理研究所,大连116023

出　　处：《化学进展》2018年第12期1992-2002,共11页Progress in Chemistry

基　　金：国家自然科学基金项目(No.21303137;21536009;21676269);唐仲英基金会资助~~

摘　　要：六铝酸盐因其特殊的层状结构具有高温热稳定性;晶格中Al^(3+)可被不同过渡金属和贵金属离子取代,具有活性组分可镶嵌性;镜面层排列疏松,为氧的优先扩散通道;以上结构特质为六铝酸盐在高温涉氧方面的应用奠定了坚实的基础。本综述从六铝酸盐的结构出发,详细讨论了六铝酸盐的结构类型(磁铅石型和β-Al_2O_3型)和金属取代对其微观结构(尤其是金属化学状态)的影响,并介绍了近年来六铝酸盐在高温涉氧反应,如CH_4催化燃烧、环保领域N_2O消除、航天推进级N_2O分解、甲烷化学链燃烧和重整中的应用,重点关注了六铝酸盐结构与性能的关联,最后对六铝酸盐未来研究方向作出展望。Hexaaluminate materials exhibit remarkable thermal stability due to their peculiar layered structure.The Al^3+ ions in the hexaaluminate lattice can be substituted by transition or noble metals,giving rise to redox centers for a variety of reactions. Oxygen in the mirror plane of hexaaluminate is loosely packed,making it a preferential diffusion route of oxygen. All of these favor the application of hexaaluminate in high-temperature oxygen-involved reaction. In this review,the structure of hexaaluminate is firstly introduced. Furthermore,the effect of structure type( magnetoplumbite and β-Al2O3) and metal substitution on the microstructure of hexaaluminate( especially metal chemical state) are carefully described. Then w e discuss recent advances of hexaaluminate in high-temperature oxygen-involved reactions,such as,catalytic combustion of CH4,process-gas N2O abatement,decomposition of N2O as a propellant,CH4 chemical looping combustion and reforming,w ith a special emphasis on the relationship betw een the microstucture and reaction performance. At last,a brief summary and an outlook are given.

关 键 词：六铝酸盐 金属取代 高温催化剂 氧载体 催化燃烧 N2O分解 化学链 构效关系 

分 类 号：O643.36[理学—物理化学] TE64[理学—化学]