典型文献
Metal-Support Interactions on Ag/Co3O4 Nanowire Monolithic Catalysts Promoting Catalytic Soot Combustion
文献摘要：
Tuning metal-support interactions(MSIs)is an important strategy in heterogeneous catalysis to realize the desirable metal dispersion and redox ability of metal catalysts.Herein,we use pre-reduced Co3O4 nanowires(Co-NWs)in situ grown on monolithic Ni foam substrates to support Ag catalysts(Ag/Co-NW-R)for soot combustion.The macroporous structure of Ni foam with crossed Co3O4 nanowires remarkably increases the soot-catalyst contact efficiency.Our characterization results demonstrate that Ag species exist as Ag0 because of the equation Ag++Co2+=Ag0+Co3+,and the pre-reduction treatment enhances interactions between Ag and Co3O4.The number of active oxygen species on the Ag-loaded catalysts is approximately twice that on the supports,demonstrating the significant role of Ag sites in generating active oxygen species.Additionally,the strengthened MSI on Ag/Co-NW-R further improves this number by increasing metal dispersion and the intrinsic activity determined by the turnover frequency of these oxygen species for soot oxidation compared with the catalyst without pre-reduction of Co-NW(Ag/Co-NW).In addition to high activity,Ag/Co-NW-R exhibits high catalytic stability and water resistance.The strategy used in this work might be applicable in related catalytic systems.
文献关键词：
中图分类号：
作者姓名：
Xingwang Yi;Yuexi Yang;Dawei Xu;Ye Tian;Song Song;Chunmei Cao;Xingang Li
作者机构：
School of Chemical Engineering&Technology,Tianjin University,Tianjin 300350,China;Institute of Shaoxing,Tianjin University,Shaoxing 312000,China;Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),Tianjin Key Laboratory of Applied Catalysis Science and Engineering,Tianjin University,Tianjin 300350,China;School of Chemical Engineering,Zhengzhou University,Zhengzhou 45000,China
文献出处：
引用格式：
[1]Xingwang Yi;Yuexi Yang;Dawei Xu;Ye Tian;Song Song;Chunmei Cao;Xingang Li-.Metal-Support Interactions on Ag/Co3O4 Nanowire Monolithic Catalysts Promoting Catalytic Soot Combustion)[J].天津大学学报（英文版）,2022(03):174-185
A类：
MSIs,Ag++Co2+,Ag0+Co3+
B类：
Metal,Support,Interactions,Co3O4,Nanowire,Monolithic,Catalysts,Promoting,Catalytic,Soot,Combustion,Tuning,metal,interactions,important,strategy,heterogeneous,catalysis,realize,desirable,dispersion,redox,catalysts,Herein,pre,reduced,nanowires,NWs,situ,grown,monolithic,foam,substrates,soot,combustion,macroporous,structure,crossed,remarkably,increases,contact,efficiency,Our,characterization,results,demonstrate,that,species,exist,because,equation,reduction,treatment,enhances,between,number,active,oxygen,loaded,approximately,twice,supports,demonstrating,significant,role,sites,generating,Additionally,strengthened,further,improves,this,by,increasing,intrinsic,activity,determined,turnover,frequency,these,oxidation,compared,without,addition,high,exhibits,catalytic,stability,water,resistance,used,work,might,applicable,related,systems
AB值：
0.534261
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