核壳/蛋黄蛋壳结构催化剂的设计策略及制备方法  

Design Strategies and Synthesis Methods for Core/Yolk Shell Structured Catalysts

作　　者：叶春 李自卫 李敏 YE Chun;LI Zi-Wei;LI Min(School of Civil Engineering,Guizhou Institute of Technology,Guiyang 550025,China;Guizhou Bureau of Land and Mineral Resources Reserve,Guiyang 550001,China;School of Chemistry and Chemical Engineering,GuizhouUniversity,Guiyang 550003,China)

机构地区：[1]贵州理工学院土木工程学院,贵州贵阳550025 [2]贵州省土地矿产资源储备局,贵州贵阳550001 [3]贵州大学化学与化工学院,贵州贵阳550003

出　　处：《化学教育（中英文）》2023年第8期11-18,共8页Chinese Journal of Chemical Education

基　　金：国家自然科学基金面上项目(22279024);国家自然科学基金地区基金(22168013);贵州省科技计划项目(黔科合基础-ZK[2022]一般074)。

摘　　要：由于尺寸效应,纳米催化剂具有高的催化活性。然而,在制备过程和反应过程等高温条件下,纳米催化剂的活性组分易烧结,造成催化稳定性逐渐下降等一系列问题。核壳/蛋黄蛋壳结构催化剂是提高纳米催化剂抗烧结性能最有效的措施之一。首先介绍纳米催化剂的烧结机理,然后讨论核壳/蛋黄蛋壳结构催化剂的设计策略,最后概括了核壳/蛋黄蛋壳结构催化剂的制备方法,为他们在高温反应中的应用提供参考。Nano catalyst usually has high catalytic activity because of the size effect.However,the active components of nano-catalysts are easy to be sintered under high temperature conditions such as preparation process and reaction process,which results in a series of problems such as the degradation of catalytic stability.Designing structured catalyst such as core/yolk shell catalyst is one of the most effective measures to improve the sintering resistance of nano-catalyst.In this paper,firstly,the sintering mechanism of nanocatalysts is introduced.Subsequently,the design strategies of core/yolk shell structured catalyst are discussed.Finally,the preparation methods of core/yolk shell structured catalyst are summarized,providing reference for their application in high temperature reactions.

关 键 词：核壳 蛋黄蛋壳结构 催化剂 设计 制备方法 

分 类 号：TQ426[化学工程] TB383.1[一般工业技术—材料科学与工程]