Promoting catalytic CO2 methanation using Ru catalyst supported on Ce-MOF-derived CeO2

Renewable Energy, Journal Year: 2025, Volume and Issue: unknown, P. 122834 - 122834

Published: March 1, 2025

Language: Английский

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Ni Catalysts for Thermochemical CO2 Methanation: A Review

Coatings, Journal Year: 2024, Volume and Issue: 14(10), P. 1322 - 1322

Published: Oct. 16, 2024

This review underscores the pivotal role that nickel-based catalysts play in advancing CO2 methanation technologies, which are integral to achieving carbon neutrality. study meticulously examines various aspects of catalyst design, including significance support materials and co-catalysts enhancing catalytic activity selectivity. discussion reveals while nickel offer a cost-effective solution due their availability high performance, challenges such as sintering deposition at temperatures remain. These issues necessitate development with superior thermal stability or those capable maintaining lower temperatures. also highlights innovative use three-dimensional fiber technology fabricating catalysts, has shown promising results improving reaction efficiency over prolonged operation. Moving forward, this research emphasizes importance optimizing structure fabrication techniques overcome existing limitations. The ongoing field holds great promise for industrial application methanation, contributing significantly global efforts reducing greenhouse gas emissions promoting sustainable energy use.

Language: Английский

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Promoting CO₂ Methanation Activity of NiAl Mixed Metal Oxide Catalysts Through Hydrophobicity Control

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(3)

Published: Jan. 1, 2025

Abstract During CO 2 methanation, the generation of H O as a by‐product can lead to its strong adsorption on catalyst's active sites, potentially blocking them or altering phase, thereby degrading catalytic performance. To mitigate this inhibition effect by water, we introduce hydrophobic surface via stearic acid treatment rapidly remove formed during methanation over NiAl mixed metal oxide (MMO)‐derived catalysts. The crystal structure MMO and average Ni particle size ∼13 nm remain unaltered treatment. catalyst treated with an optimal concentration shows nearly doubled conversion 61.4% at 275 °C, compared pristine catalyst, high activity is sustained for 100 h without deactivation. However, excessive coverage inhibits significantly, causing sharp drop in 10.8%. This study demonstrates that modification effectively ameliorate deactivation due O, which could be applied many other reactions where acts inhibiting by‐product.

Language: Английский

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Hydrogen Energy Storage via CO2 Hydrogenation over Catalysts Prepared by Layered Double Hydroxide Precursor

Catalysts, Journal Year: 2025, Volume and Issue: 15(2), P. 111 - 111

Published: Jan. 23, 2025

Converting CO2 and green hydrogen into products such as methane methanol not only has a negative carbon effect, but also stores renewable energy chemicals. This represents promising route for storage technologies. The hydrogenation of to methanol, which represent strongly exothermic reactions, are thermodynamically favored at low temperatures. However, the inherent inertness makes it difficult activate Both reactions face challenge activating temperature, so catalysts exhibiting high activity under conditions critical need. Layered double hydroxides (LDHs) have attracted considerable interest owing their regular layered structure uniform dispersion multiple metallic components. there few studies on same effects promoters over LDHs-derived catalysts. Here, we investigated two in different illustrate facilitating low-temperature activation By adding Fe Mn NiAl-Fe CuZnAl-Mn, crystal lattices were expanded, surface areas increased 38% 25%, reduction temperatures decreased 97 °C 10 °C, respectively. These significantly enhanced adsorption CuZnAl-Mn. methanation catalyst achieved conversion 80.8% 200 2 MPa, while synthesis CuZnAl-Mn exhibited 21.3% selectivity 61.8% 250 3 MPa. influence LDHs precursors’ addition catalytic performance studied by XRD, N2 adsorption–desorption, H2-TPR, H2-TPD, CO2-TPD.

Language: Английский

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Carbon-embedded Ni catalysts for highly efficient CO2 methanation

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 118, P. 170 - 178

Published: March 18, 2025

Language: Английский

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High-performance metal doped Ni-based Mg-Al hydrotalcite catalyst for carbon dioxide capture and conversion to methane

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 117105 - 117105

Published: May 1, 2025

Language: Английский

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