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Superfine CeO2 Embedded in a Porous ZrO2 Matrix for Catalytic HCl Oxidation
Author NameAffiliationE-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 
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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Chinese Journal of Inorganic Chemistry