负载型金属催化剂上活性中心的还原策略  

Reduction Strategies for the Formation of Active Centers on Supported Metal Catalysts

作　　者：杜秋月 杨淇 杨娜 杨青青 张海东[1] DU Qiuyue;YANG Qi;YANG Na;YANG Qingqing;ZHANG Haidong(Engineering Research Center for Waste Oil Recovery Technology and Equipment of Ministry of Education,College of Environmental and Resource,Chongqing Technology and Business University,Chongqing 400067,China)

机构地区：[1]重庆工商大学废油资源化技术与装备教育部工程研究中心环境与资源学院,重庆400067

出　　处：《广州化学》2023年第4期20-25,共6页Guangzhou Chemistry

基　　金：国家自然科学基金(U1362105;22078032);重庆市科委基础与前沿研究(cstc2021jcyj-msxmX0850);重庆市教委科学技术研究重点项目(KJZD-K201900805)、创新群体(CXQT21023)。

摘　　要：负载型金属催化剂(supported metal catalyst,SMC)是能源催化、环境催化、精细化工等领域的重要催化剂。SMC的制备离不开零价活性物种的形成,首先介绍了SMC活性中心形成的还原策略,包括气相还原(H_(2)、CO、NH_(3))、液相还原(NaBH_(4)溶液、乙醛和甲醛溶液、乙二醇)和电子还原(电沉积还原、光沉积还原、电子辅助还原),比较和分析了不同还原策略的特点。其次详细分析了不同还原策略对形成金属活性中心粒子大小与粒子分布以及对催化剂性能的影响。最后展望了金属活性中心还原策略的未来发展方向。Supported metal catalysts are widely used in the fields of energy,environmental protection and chemical production because of their high efficiency and high selectivity.The preparation of supported metal catalysts is inseparable from the formation of zero-valent active center species.Firstly,the reduction strategies for the formation of active centers of supported metal catalysts are introduced,including gas phase reduction strategies(H_(2),CO,NH_(3)),liquid phase reduction strategies(NaBH_(4) solution,acetaldehyde and formaldehyde solution,ethylene glycol)and electronic reduction strategies(electrodeposition reduction,photodeposition reduction,and electron-assisted reduction).The characteristics of different reduction strategies are compared and analyzed.Secondly,the effects of different reduction strategies on the particle size and particle distribution of the formed metal active centers and on the catalyst performance are analyzed in detail.Finally,the future development direction of the metal active centers reduction strategy is foreseen.

关 键 词：负载型催化剂 金属活性中心 金属粒子 还原策略 

分 类 号：TB31[一般工业技术—材料科学与工程]