Citation: 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. doi: 10.11862/CJIC.2018.168 shu

CeO₂ in Different Morphologies with 2, 4-Dihydroxybenzonic Acid as Auxiliary: Synthesis and Application in NH₃-SCR

State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China

Corresponding author: KONG Yan, kongy36@njtech.edu.cn
Received Date: 7 March 2018
Revised Date: 3 May 2018

Figures(8)

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.
- CeO₂,
- 2, 4-dihydroxybenzonic acid,
- nanostructure,
- hydrothermal synthesis,
- NH₃-SCR
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CeO2 in Different Morphologies with 2, 4-Dihydroxybenzonic Acid as Auxiliary: Synthesis and Application in NH3-SCR

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CeO₂ in Different Morphologies with 2, 4-Dihydroxybenzonic Acid as Auxiliary: Synthesis and Application in NH₃-SCR