Ceria modified crystalline mesoporous Cr₂O₃ based nanocomposites supported metal oxide for benzene complete oxidation

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• 作者：Ping Xia ; Shufeng Zuo ; Fujian Liu ; Chenze Qi
• 关键词：Crystalline mesoporous ; P4VP&ndash ; Cr2O3 ; Metal oxides ; Ceria ; VOC ; Catalytic oxidation
• 刊名：Catalysis Communications
• 出版年：2013
• 出版时间：5 November, 2013
• 年：2013
• 卷：41
• 期：Complete
• 页码：91-95
• 全文大小：906 K

文摘

Crystalline mesoporous chromium oxide (P4VP-Cr2O3) was synthesized and used as carrier of metal (Cu, Mn, Co) oxides for benzene complete oxidation. Influence of the ceria promoter on catalytic performance of MnO_x/P4VP-Cr2O3 was investigated. The results show that P4VP-Cr2O3 has abundant mesopores, which exhibits blocky morphology with crystal sizes ranging from 5 to 15 ¦Ìm, giving a uniform pore size centered at 18.4 nm. P4VP-Cr2O3 exhibits a high degree of crystallinity, and active sites have been successfully loaded into P4VP-Cr2O3. Ceria promoter, smaller MnO_x crystallites and strong interaction among the metal oxides are the key factors to enhance the catalytic activity.