摘要
A series of copper cobalt composite oxides with different composition were synthesized by solid phase reaction using citric acid as a complex agent, and characterized with XRD, BET and TPR. The effects of the copper/cobalt ratio on the crystal structure, specific surface area, reduction performance and catalytic activity of the catalyst for xylene combustion were studied. It was found that the catalytic activity of the catalyst has close relation with the copper/cobalt ratio. The interaction between copper and cobalt improved the specific surface area and reduction properties of the samples. The catalyst sample with n (Cu)/ n (Co)=1 has the largest specific surface area, the highest activity and the lowest reduction temperature. At the same time, the experimental results indicated that the spinel CuCo 2O 4 has high catalytic activity for xylene complete oxidation. The addition of opportune copper oxide promotes the CuCo 2O 4 dispersion on the composite oxide.
A series of copper-cobalt composite oxides with different composition were synthesized by solid-phase reaction using citric acid as a complex agent, and characterized with XRD, BET and TPR. The effects of the copper/cobalt ratio on the crystal structure, specific surface area, reduction performance and catalytic activity of the catalyst for xylene combustion were studied. It was found that the catalytic activity of the catalyst has close relation with the copper/cobalt ratio. The interaction between copper and cobalt improved the specific surface area and reduction properties of the samples. The catalyst sample with n(Cu)/n(Co) = 1 has the largest specific surface area, the highest activity and the lowest reduction temperature. At the same time, the experimental results indicated that the spinel CuCo2O4 has high catalytic activity for xylene complete oxidation. The addition of opportune copper oxide promotes the CuCo2O4 dispersion on the composite oxide.
出处
《催化学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第6期589-591,共3页
基金
国家自然科学基金 ( 2 986 90 0 1)
内蒙古自然科学基金资助项目
