Synergistic Effect of Cerium Promoter and Dendritic Mesoporous Silica Support on Ni‐Catalyzed CO2 Methanation DOI

Ju Hyeong Lee,

Daewon Oh,

Woo Yeong Noh

et al.

ChemCatChem, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

Abstract Enhancing the dispersion of active metals and tuning their interaction with a suitable support are crucial for improving catalytic performance. Here, we utilize Ce‐promoted dendritic mesoporous silica (Ce‐DMS) as that offers abundant oxygen vacancies (O v ) high surface area to boost performance Ni‐catalysed CO 2 methanation by enriching Ni–O –Ce interface enhancing Ni dispersion. The optimized Ni/5Ce‐DMS catalyst exhibits turnover frequency 1.6 s −1 at 300 °C, which outperformed Ni/DMS Ni/CeO reference catalysts, well other Ni‐based catalysts reported in literature. Combined situ ex analyses reveal superior activity originates from large specific Ce‐DMS formation interfaces. provided highly dispersed cerium on facilitate activation, thereby promoting CH 4 even low temperatures. Moreover, numerous layers DMS enhance prevent aggregation, achieving enhanced stability.

Language: Английский

Synergistic Effect of Cerium Promoter and Dendritic Mesoporous Silica Support on Ni‐Catalyzed CO2 Methanation DOI

Ju Hyeong Lee,

Daewon Oh,

Woo Yeong Noh

et al.

ChemCatChem, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

Abstract Enhancing the dispersion of active metals and tuning their interaction with a suitable support are crucial for improving catalytic performance. Here, we utilize Ce‐promoted dendritic mesoporous silica (Ce‐DMS) as that offers abundant oxygen vacancies (O v ) high surface area to boost performance Ni‐catalysed CO 2 methanation by enriching Ni–O –Ce interface enhancing Ni dispersion. The optimized Ni/5Ce‐DMS catalyst exhibits turnover frequency 1.6 s −1 at 300 °C, which outperformed Ni/DMS Ni/CeO reference catalysts, well other Ni‐based catalysts reported in literature. Combined situ ex analyses reveal superior activity originates from large specific Ce‐DMS formation interfaces. provided highly dispersed cerium on facilitate activation, thereby promoting CH 4 even low temperatures. Moreover, numerous layers DMS enhance prevent aggregation, achieving enhanced stability.

Language: Английский

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