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《Environmental Chemistry》 1997-05
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Jiang Xiaoyuan Zhou Renxian Chen Ping Zheng Xiaoming(Institute of Catalysis,Hangzhou University,Hangzhou, 310028)  
Ceria(CeO2)is oxygen-ion-conducting materials having catalytic properties usually at high temperature. On the other hand,cheap CuO has been wiedly used as oxidation catalyst. In this paper,activity of CuO/ ,CeO2/and CuO-CeO2/γ-Al2O3 in oxidation of CO and n-C6H14, dispersion state of CuO,reduction property,surface oxygen desorption and recovery ability were studied by means of micro reactor-GC technique, XRD,TPR and TPD-MS respectively. Experimental results shown that good activity of CuO CcO2/7-A12O3 in oxidation of CO and n-C6H14 is because the addition of CeO2 improve the CuO dispersion on γ-Al2O3 which is in the state of noncrystalline CuO, promotes oxygen species desorption and recovery as well as increases redox cycle.
【Fund】: 浙江省科学技术委员会;; 浙江省应用化学重点研究实验室基金资助
【CateGory Index】: O643.3
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