Recent advances in the catalytic removal of NOx and N2O over spinel oxide-based catalyst

Li, Ruoyuan; Li, Ya-Meng; Liu, Zhiming

doi:10.1016/j.fuel.2023.129405

Cited by 17 publications

(1 citation statement)

References 95 publications

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“…Nitrogen oxides (NO x ) emitted from the incomplete combustion of fossil fuels are the main cause of air pollution. Besides, NO causes serious harm to human beings and the environment, such as causing respiratory diseases, damaging the ozone layer, exacerbating the greenhouse effect, and triggering acid rain, among other problems. , After years of research, researchers have developed many different methods for the removal of NO x . Among them, selective catalytic reduction of NO x using CO as a reductant (CO-SCR) is a very desirable method to purify exhaust gases, which can eliminate the two main toxic NO and CO pollutants and generate harmless N 2 and CO 2 without incurring additional costs, and has a very high scope of development and application value. − Earlier, it was believed that loaded triple-effect catalysts with precious metals as active components had excellent catalytic performance (mainly Pt, Pd, Ru, Rh, and Au, etc.)…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Magnetic Core–Shell CZ/Fe₃O₄ Catalysts for Catalytic CO-SCR

Wang,

Li,

Qin

et al. 2024

Ind. Eng. Chem. Res.

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Transition metal catalysts exhibit great promise for application in the field of CO-SCR owing to their exceptional performance and cost effectiveness. The metal oxides generated by traditional synthesis methods often have irregular morphology and small pore sizes, leading to the problems of uneven loading and difficult recycling. Hence, we utilized a two-step hydrothermal methodology to fabricate Ce x Zr 1−x O 2 /Fe 3 O 4 hollow core−shell structured nanocomposites with a high specific surface area and robust paramagnetic properties. These nanostructures exhibit exceptional efficacy in simultaneous elimination of NO and CO. Catalysts with varying molar ratios of Ce/Zr were introduced, resulting in diverse Ce 3+ /Ce 4+ and Fe 2+ /Fe 3+ ratios, abundant oxygen vacancies, and exceptional reducibility, in which the Ce 0.7 Zr 0.3 O 2 /Fe 3 O 4 catalyst achieves 100% NO conversion at 300 °C because it has a large specific surface area, abundant oxygen vacancies, and active sites. In addition, in situ DRIFTS analysis of the samples before and after the magnetization treatment showed that the magnetic field promoted NO adsorption.

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Section: Introductionmentioning

confidence: 99%

Fabrication of Magnetic Core–Shell CZ/Fe₃O₄ Catalysts for Catalytic CO-SCR

Wang,

Li,

Qin

et al. 2024

Ind. Eng. Chem. Res.

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Tuning the A‐site Element in LaCo_0.8Fe_0.2O₃ Perovskite‐based Catalyst for High Temperature N₂O Decomposition in Nitric Acid Plant

Zheng,

He,

et al. 2024

ChemistrySelect

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The effect of La‐deficiency and Ce/Sr‐substitution in the benchmark LaCo0.8Fe0.2O3 has been investigated for the decomposition of N2O between 500 and 900 °C. Real inlet gas composition and space velocity reveal that La‐deficiency and Ce/Sr‐substitution can improve the thermal stability of catalyst, while La1‐xSrxCo0.8Fe0.2O3 with x≥0.1 was highlighted as a promising formula due to the strongest resistance to deactivation and suppressed undesired NOx decomposition at high space velocity. This phenomenon is mainly ascribed to the incorporation of Sr2+ into the perovskite lattice during the reaction consequently stabilizing the Co3+ species and creating the oxygen vacancies in La1‐xSrxCoO3‐δ. On the contrary, the loss of activity on Ce‐substituted LaCo0.8Fe0.2O3 has been preferentially related to the cobalt exsolution to extra framework of perovskite making the catalytic cycle with Co3+ unfavorable. All these bulk and surface changes are accompanied with opposite evolution of apparent activation energy and pre‐exponential factor which can be discussed based on a redox mechanism.

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Facile Synthesis of N-doped Co3O4 Catalyst for Catalytic Decomposition of N2O under Simulated Real Tail Gases

Hu,

Meng,

Feng

et al. 2024

Catal Lett

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Recent advances in the catalytic removal of NOx and N2O over spinel oxide-based catalyst

Cited by 17 publications

References 95 publications

Fabrication of Magnetic Core–Shell CZ/Fe₃O₄ Catalysts for Catalytic CO-SCR

Fabrication of Magnetic Core–Shell CZ/Fe₃O₄ Catalysts for Catalytic CO-SCR

Tuning the A‐site Element in LaCo_0.8Fe_0.2O₃ Perovskite‐based Catalyst for High Temperature N₂O Decomposition in Nitric Acid Plant

Facile Synthesis of N-doped Co3O4 Catalyst for Catalytic Decomposition of N2O under Simulated Real Tail Gases

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Recent advances in the catalytic removal of NOx and N2O over spinel oxide-based catalyst

Cited by 17 publications

References 95 publications

Fabrication of Magnetic Core–Shell CZ/Fe3O4 Catalysts for Catalytic CO-SCR

Fabrication of Magnetic Core–Shell CZ/Fe3O4 Catalysts for Catalytic CO-SCR

Tuning the A‐site Element in LaCo0.8Fe0.2O3 Perovskite‐based Catalyst for High Temperature N2O Decomposition in Nitric Acid Plant

Facile Synthesis of N-doped Co3O4 Catalyst for Catalytic Decomposition of N2O under Simulated Real Tail Gases

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Product

Resources

About

Fabrication of Magnetic Core–Shell CZ/Fe₃O₄ Catalysts for Catalytic CO-SCR

Fabrication of Magnetic Core–Shell CZ/Fe₃O₄ Catalysts for Catalytic CO-SCR

Tuning the A‐site Element in LaCo_0.8Fe_0.2O₃ Perovskite‐based Catalyst for High Temperature N₂O Decomposition in Nitric Acid Plant