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Superfine CeO2 Embedded in a Porous ZrO2 Matrix for Catalytic HCl Oxidation |
Author Name | Affiliation | E-mail | XU Xi-Hua | State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, China College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China | | LOU Jia-Wei | State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, China College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China | | XIE Xing-Xing | State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, China College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China | | FEI Zhao-Yang | State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, China College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China | zhaoyangfei@njtech.edu.cn | LIU Qing | State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, China College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China | | CHEN Xian | College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China | | TANG Ji-Hai | College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China | | CUI Mi-Fen | College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China | | QIAO Xu | State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, China College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China | qct@njtech.edu.cn |
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Abstract: Ce-Zr composite oxide catalysts were prepared by different methods for catalytic HCl oxidation. The nano-sized CeO2 particles embedded in the amorphous ZrO2 matrix fabricated by spontaneous deposition strategy. A significant "size effect" of CeO2 nanoparticles leads to considerably high concentration of Ce3+ and oxygen vacancy sites, which makes the catalyst have excellent low-temperature oxidation reduction performance and oxygen storage capacity. Catalytic performance tests indicate that the CeO2@ZrO2 catalyst shows superior activity (1.90 gCL2·gcat-1·h-1) and good durability. The isolation of CeO2 nanoparticles by the amorphous ZrO2 is a key factor of durability of the catalyst. |
Keywords: catalytic oxidation CeO2 chlorine recycle oxygen vacancy size effect |
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XU Xi-Hua,LOU Jia-Wei,XIE Xing-Xing,FEI Zhao-Yang,LIU Qing,CHEN Xian,TANG Ji-Hai,CUI Mi-Fen,QIAO Xu.Superfine CeO2 Embedded in a Porous ZrO2 Matrix for Catalytic HCl Oxidation[J].Chinese Journal of Inorganic Chemistry,2017,33(3):421-428. |
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