Bridge-type Mn–O–Mn sites promoting catalytic methane oxidation and carbonate desorption over Mn-based oxides

Xu, Jiacheng; Zhang, Tiantian; Sun, Yan; Fang, Shiyu; Wu, Zuliang; Gao, Erhao; Zhu, Jiali; Wang, Wei; Dai, Lianxin; Liu, Weihua; Zhang, Buhe; Zhang, Junwei; Yao, Shuiliang; Li, Jing

doi:10.1039/d3cy01019h

Catal. Sci. Technol.

2023

DOI: 10.1039/d3cy01019h

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Bridge-type Mn–O–Mn sites promoting catalytic methane oxidation and carbonate desorption over Mn-based oxides

Jiacheng Xu,

Tiantian Zhang,

Yan Sun

et al.

Abstract: MnO2 is a good catalyst due to its various crystal structures and oxidative valence states.

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Cited by 3 publications

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Boosting the Catalytic Performance of γ-MnOOH Through Post-Treatment with Potassium Hydroxide on n-Butylamine with CO2

Sun,

Zhai,

Zhou

et al. 2024

Catal Lett

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Boosting the Catalytic Performance of γ-MnOOH Through Post-Treatment with Potassium Hydroxide on n-Butylamine with CO2

Sun,

Zhai,

Zhou

et al. 2024

Catal Lett

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Experiment and density functional theory researches on (Mn, Hf) co-doped Ce-based applied surface catalysts for carbon monoxide oxidation and thermal stability

Wu,

Feng,

Liu

et al. 2025

Applied Surface Science

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Highly Water-Resistant Ce-Doped CuMnO_x Catalyst for Durable CO Oxidation by Inhibiting Byproducts

Fan,

Ma,

Gan

et al. 2024

Ind. Eng. Chem. Res.

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Air pollution is a serious challenge in the rapid development of the iron and steel industries. The development of water resistance in the CO catalyst is the key prospect in sintering flue gas terminal treatment. In the work described in this paper, we introduced Ce into CuMnO x to regulate its water resistance, and a model was proposed to explore the mechanism of carbonate product elimination. A 7.5% Ce-doped sample showed the best activity, increasing the reaction rate by 8 times, with the CO conversion rate over 90% at 110 °C and over 80% after 100 h in a humid environment. The sample characterization analysis showed that Ce intercalation breaks the surface charge balance and promotes electronic migration and the binding of external protons. Proper Ce-doping to enhance the surface Lewis and Bronsted acidity could inhibit the adsorption and solidification of acidic gas CO 2 on catalysts. Meanwhile, a Ce−Mn charge-transfer interaction passivates the overly compact binding of Mn sites to carbonate intermediates, making the adsorption and desorption of hydration products reach a good balance and inhibiting the formation of carbonate complexes. This study provides insights for the mechanisms of water resistance to strengthen the application of CuMnO x catalysts in humid environments.

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Bridge-type Mn–O–Mn sites promoting catalytic methane oxidation and carbonate desorption over Mn-based oxides

Abstract: MnO2 is a good catalyst due to its various crystal structures and oxidative valence states.

Cited by 3 publications

References 40 publications

Boosting the Catalytic Performance of γ-MnOOH Through Post-Treatment with Potassium Hydroxide on n-Butylamine with CO2

Boosting the Catalytic Performance of γ-MnOOH Through Post-Treatment with Potassium Hydroxide on n-Butylamine with CO2

Experiment and density functional theory researches on (Mn, Hf) co-doped Ce-based applied surface catalysts for carbon monoxide oxidation and thermal stability

Highly Water-Resistant Ce-Doped CuMnO_x Catalyst for Durable CO Oxidation by Inhibiting Byproducts

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Resources

About

Bridge-type Mn–O–Mn sites promoting catalytic methane oxidation and carbonate desorption over Mn-based oxides

Abstract: MnO2 is a good catalyst due to its various crystal structures and oxidative valence states.

Cited by 3 publications

References 40 publications

Boosting the Catalytic Performance of γ-MnOOH Through Post-Treatment with Potassium Hydroxide on n-Butylamine with CO2

Boosting the Catalytic Performance of γ-MnOOH Through Post-Treatment with Potassium Hydroxide on n-Butylamine with CO2

Experiment and density functional theory researches on (Mn, Hf) co-doped Ce-based applied surface catalysts for carbon monoxide oxidation and thermal stability

Highly Water-Resistant Ce-Doped CuMnOx Catalyst for Durable CO Oxidation by Inhibiting Byproducts

Contact Info

Product

Resources

About

Highly Water-Resistant Ce-Doped CuMnO_x Catalyst for Durable CO Oxidation by Inhibiting Byproducts