Citation: ZHU Jie, GE Feng-Juan. CuO/CeO₂/γ-Al₂O₃ Catalysts: Effect of Pretreating Atmosphere on Surface Properties and Catalytic Performance in Selective Catalytic Reduction of NO with CO[J]. Chinese Journal of Inorganic Chemistry, ;2015, (1): 191-197. doi: 10.11862/CJIC.2015.021 shu

CuO/CeO₂/γ-Al₂O₃ Catalysts: Effect of Pretreating Atmosphere on Surface Properties and Catalytic Performance in Selective Catalytic Reduction of NO with CO

ZHU Jie ^, ,
GE Feng-Juan

1.
School of Chemistry and Chemical Engineering, Xuzhou Institute of Technology, Xuzhou, Jiangsu 221111, China

Corresponding author: ZHU Jie,
Received Date: 3 July 2014
Available Online: 15 October 2014
Fund Project: 江苏省高校自然科学基金(No.12KJD530002)资助项目. (No.12KJD530002)

The CeO₂/γ-Al₂O₃ supports were prepared and pretreated in different atmospheres to adjust the valence state of surface Ce element, then Cu(CH₃COO)₂ was impregnated as the precursor to prepare CuCeAl samples. XRD and H₂-TPR results indicate that the CeO₂/γ-Al₂O₃ support pretreated by reducing atmosphere has more active oxygen atoms, consequently has more dispersed Cu²⁺/Cu⁺ species on the surface. The "NO+CO" reaction tests reveal that the dispersed Cu²⁺/Cu⁺ are the active species for NO conversion, while crystalline Cu⁰ promotes the N₂ selectivity at low temperatures. Hence, the catalysts containing both dispersed Cu²⁺/Cu⁺ and a few crystalline Cu⁰ have the optimal catalytic efficiency.
- heterogeneous catalysis;nitrogen oxides;waste prevention;pretreating atmosphere;CeO₂/γ-Al₂O₃;"NO+CO" reaction
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沈阳化工大学材料科学与工程学院沈阳 110142

CuO/CeO2/γ-Al2O3 Catalysts: Effect of Pretreating Atmosphere on Surface Properties and Catalytic Performance in Selective Catalytic Reduction of NO with CO

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通讯作者: 陈斌, bchen63@163.com

CuO/CeO₂/γ-Al₂O₃ Catalysts: Effect of Pretreating Atmosphere on Surface Properties and Catalytic Performance in Selective Catalytic Reduction of NO with CO