Effect of SO2 introduction into CeO2 on its surface acidity and redox property for the selective catalytic reduction of NO with NH3

Zhang, Xuejun; Mo, Dujuan; Song, Zhongxian; Liu, Wei; Li, Haiyang; Guan, Nana; Zhang, Mengru; Guo, Ruihua; Huang, Zhenzhen

doi:10.1039/d3nj03924b

New J. Chem.

2023

DOI: 10.1039/d3nj03924b

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Effect of SO₂ introduction into CeO₂ on its surface acidity and redox property for the selective catalytic reduction of NO with NH₃

Xuejun Zhang,

Dujuan Mo,

Zhongxian Song

et al.

Abstract: Ce catalyst can remove part of NO through E–R mechanism. The reaction mechanism of H–Ce is the same as that of Ce. S–Ce can remove NO through E–R and L–H mechanism, and obtain excellent catalytic performance. H–S–Ce mainly follows the E–R mechanism.

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Regulating the Interaction Between PdCu Bimetals and MgAl_1.82Ce_0.18O₄ Spinel for Three‐Way Catalysis

Yuan,

Busari,

et al. 2024

ChemCatChem

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Three‐way catalysis represents a pivotal technology for converting automobile exhaust pollutants into non‐toxic gases. Substituting some noble metals with transition metals is considered a promising way to reduce catalyst costs. Herein, we have investigated the catalytic potential of different configurations of Pd‐Cu catalysts prepared by impregnation (PdCu/MA), sol‐gel (PdCu‐MA), impregnation with physical mixing (Pd/Cu/MA) and sol‐gel with physical mixing (Pd/Cu‐MA) to modify the interaction of Pd/Cu and MgAl1.82Ce0.18O4 (MA) spinel in this comparative study. The different structures in these catalysts lead to different catalytic performances. PdCu/MA exhibits the best three‐way catalytic performance, which owe to the small‐sized PdCu particles with high Pd2+ content (45.3%) and optimal interaction of Pd/Cu particles and MgAl1.82Ce0.18O4 support. Furthermore, comprehensive CO‐DRIFTS, H2‐TPR, and O2‐TPD analyses discover that the metal‐support interaction is beneficial to enhance the catalytic performance in three‐way catalysis. Overall, we demonstrated that the interaction between PdCu bimetals and support can regulate the electronic state of Pd, thereby enhancing the use and efficiency of noble metals.

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Regulating the Interaction Between PdCu Bimetals and MgAl_1.82Ce_0.18O₄ Spinel for Three‐Way Catalysis

Yuan,

Busari,

et al. 2024

ChemCatChem

View full text Add to dashboard Cite

show abstract

Self-protected Chlorella@Mn catalyst with excellent resistance to alkali/alkaline earth metal for NOx reduction by NH3

Liu,

Gao,

Luo

et al. 2025

Journal of Colloid and Interface Science

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Effect of SO₂ introduction into CeO₂ on its surface acidity and redox property for the selective catalytic reduction of NO with NH₃

Abstract: Ce catalyst can remove part of NO through E–R mechanism. The reaction mechanism of H–Ce is the same as that of Ce. S–Ce can remove NO through E–R and L–H mechanism, and obtain excellent catalytic performance. H–S–Ce mainly follows the E–R mechanism.

Cited by 2 publications

References 76 publications

Regulating the Interaction Between PdCu Bimetals and MgAl_1.82Ce_0.18O₄ Spinel for Three‐Way Catalysis

Regulating the Interaction Between PdCu Bimetals and MgAl_1.82Ce_0.18O₄ Spinel for Three‐Way Catalysis

Self-protected Chlorella@Mn catalyst with excellent resistance to alkali/alkaline earth metal for NOx reduction by NH3

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Effect of SO2 introduction into CeO2 on its surface acidity and redox property for the selective catalytic reduction of NO with NH3

Abstract: Ce catalyst can remove part of NO through E–R mechanism. The reaction mechanism of H–Ce is the same as that of Ce. S–Ce can remove NO through E–R and L–H mechanism, and obtain excellent catalytic performance. H–S–Ce mainly follows the E–R mechanism.

Cited by 2 publications

References 76 publications

Regulating the Interaction Between PdCu Bimetals and MgAl1.82Ce0.18O4 Spinel for Three‐Way Catalysis

Regulating the Interaction Between PdCu Bimetals and MgAl1.82Ce0.18O4 Spinel for Three‐Way Catalysis

Self-protected Chlorella@Mn catalyst with excellent resistance to alkali/alkaline earth metal for NOx reduction by NH3

Contact Info

Product

Resources

About

Effect of SO₂ introduction into CeO₂ on its surface acidity and redox property for the selective catalytic reduction of NO with NH₃

Regulating the Interaction Between PdCu Bimetals and MgAl_1.82Ce_0.18O₄ Spinel for Three‐Way Catalysis

Regulating the Interaction Between PdCu Bimetals and MgAl_1.82Ce_0.18O₄ Spinel for Three‐Way Catalysis