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CeO2 in Different Morphologies with 2,4-Dihydroxybenzonic Acid as Auxiliary: Synthesis and Application in NH3-SCR
Author NameAffiliationE-mail
SU Hang State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China  
XU Man State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China  
ZHOU Shi-Jian State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China  
YANG Fu State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China  
KONG Yan State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China kongy36@njtech.edu.cn 
Abstract: Different morphologies (rod-like and sheet-like) of CeOHCO3 were controllably synthesized by using 2, 4-dihydroxybenzonic acid (DHBA) as auxiliary. During the hydrothermal process, the morphologies of CeOHCO3 were controlled by adding different amount of DHBA. When the amount of DHBA was 3.5 mmol, rod-like CeOHCO3 was synthesized, while by increasing the amount of DHBA to 5.0 mmol, the sheet-like CeOHCO3 was relatively generated. Then the rod-like and sheet-like fcc-CeO2 (face-centered cubic-CeO2) were successfully obtained by the subsequent calcination procedure. The resulted CeO2 affords large surface area (> 60 m2·g-1), while the rod-like CeO2 exhibits higher redox ability and more acid amount compared to those of sheet-like CeO2. In addition, the rod-like CeO2 exhibits better catalytic activity in NH3-SCR.
Keywords: CeO2  2,4-dihydroxybenzonic acid  nanostructure  hydrothermal synthesis  NH3-SCR
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SU Hang,XU Man,ZHOU Shi-Jian,YANG Fu,KONG Yan.CeO2 in Different Morphologies with 2,4-Dihydroxybenzonic Acid as Auxiliary: Synthesis and Application in NH3-SCR[J].Chinese Journal of Inorganic Chemistry,2018,34(8):1538-1546.
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Chinese Journal of Inorganic Chemistry