典型文献
Preparation and reaction mechanism of novel CexCoyCuz oxide composite catalysts towards oxidation of o-xylene
文献摘要：
CexCoyCuz oxide composite catalysts were prepared by using polyethylene glycol,citrate sol-gel method combined with PMMA template for the oxidation of o-xylene.The catalysts were characterized by the X-ray diffraction(XRD),H2-temperature programmed reduction(H2-TPR),X-ray photoelectron spectros-copy(XPS)and Fourier transform infrared spectroscopy(FT-IR),etc.The catalytic activity for o-xylene was investigated.The catalytic degradation pathway and mechanism of o-xylene were inferred.The results show that CeO2 is mainly present on the surface of all catalysts.The surface area of Ce2Co1Cu1 is up to 77.2 m2/g,and the average pore size is 10.62 nm.It exhibits redox and sufficient Ce4+and Ce3+,and reactive oxygen species,and has maximum O-H and C=O in the five catalyst samples.The catalytic activity of Ce2Co1Cu1 is the best at low temperature,with the T50 and T90 values of 235 and 258℃at a space velocity of 32000 h-1,respectively.The o-xylene is oxidized to o-methyl benzaldehyde,and then further oxidized to o-methvlbenzoic acid,and finally CO2 and H2O are formed.
文献关键词：
中图分类号：
作者姓名：
Mengge Zhao;Weijian Cai;Jiwu Li
作者机构：
School of Environmental Science and Engineering,Zhejiang Gongshang University,Hangzhou 310018,China;Department of Chemistry,School of Food Science and Biotechnology,Zhejiang Gongshang University,Hangzhou 310018,China
文献出处：
引用格式：
[1]Mengge Zhao;Weijian Cai;Jiwu Li-.Preparation and reaction mechanism of novel CexCoyCuz oxide composite catalysts towards oxidation of o-xylene)[J].稀土学报（英文版）,2022(10):1573-1583
A类：
CexCoyCuz,Ce2Co1Cu1,Ce4+and,methvlbenzoic
B类：
Preparation,reaction,mechanism,novel,oxide,composite,catalysts,towards,oxidation,xylene,were,prepared,by,using,polyethylene,glycol,citrate,sol,gel,method,combined,PMMA,template,characterized,ray,diffraction,temperature,programmed,reduction,TPR,photoelectron,XPS,Fourier,transform,infrared,spectroscopy,FT,etc,catalytic,activity,was,investigated,degradation,pathway,inferred,results,show,that,CeO2,mainly,present,surface,area,up,average,pore,size,It,exhibits,redox,sufficient,Ce3+,reactive,oxygen,species,has,maximum,five,samples,best,low,T50,T90,values,space,velocity,respectively,oxidized,methyl,benzaldehyde,then,further,acid,finally,H2O,formed
AB值：
0.540438
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