Selection and optimisation of a zeolite/catalyst mixture for sorption-enhanced CO2 methanation (SEM) process

Gómez, Laura; Martínez, Isabel; Navarro, María Victoria; Murillo, Ramón

doi:10.1016/j.jcou.2023.102611

Cited by 11 publications

(1 citation statement)

References 71 publications

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“…This reaction is commonly termed as the CO 2 methanation reaction. From a catalytic perspective, there is a preference for cost-effective Ni-based catalysts over precious metals, such as Ru, Ir, Rh, and Pd for methanation reactions. ,, These Ni-based catalysts offer a more economical and sustainable solution for efficient CO 2 conversion into CH 4 , making them a key focus in current research and development efforts . The interaction between CO 2 and the catalyst site is influenced by two critical factors: surface basicity and reducibility.…”

Section: Introductionmentioning

confidence: 99%

Impact of Sr Addition on Zirconia–Alumina-Supported Ni Catalyst for CO_x-Free CH₄ Production via CO₂ Methanation

Abahussain,

Al-Fatesh,

Rajput

et al. 2024

ACS Omega

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Zirconia-alumina-supported Ni (5Ni/ 10ZrO 2 +Al 2 O 3 ) and Sr-promoted 5Ni/10ZrO 2 +Al 2 O 3 are prepared, tested for carbon dioxide (CO 2 ) methanation at 400 °C, and characterized by X-ray diffraction, X-ray photoelectron spectroscopy, surface area and porosity, infrared spectroscopy, and temperature-programmed reduction/desorption techniques. The CO 2 methanation is found to depend on the dispersion of Nickel (Ni) sites as well as the extent of stabilization of CO 2 -interacted species. The Ni active sites are mainly derived from the reduction of 'moderately interacted NiO species'. The dispersion of Ni over 1 wt % Sr-promoted 5Ni/10ZrO 2 +Al 2 O 3 is 1.38 times that of the unpromoted catalyst, and it attains 72.5% CO 2 conversion (against 65% over the unpromoted catalyst). However, increasing strontium (Sr) loading to 2 wt % does not affect the Ni dispersion much, but the concentration of strong basic sites is increased, which achieves 80.6% CO 2 conversion. The 5Ni4Sr/10ZrO 2 +Al 2 O 3 catalyst has the highest density of strong basic sites and the highest concentration of active sites with maximum Ni dispersion. This catalyst displays exceptional performance and achieves approximately 80% CO 2 conversion and 70% methane (CH 4 ) yield for up to 25 h on steam. The unique acidic−basic profiles composed of strong basic and moderate acid sites facilitate the sequential hydrogenation of formate species in the CO x -free CH 4 route.

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Section: Introductionmentioning

confidence: 99%

Impact of Sr Addition on Zirconia–Alumina-Supported Ni Catalyst for CO_x-Free CH₄ Production via CO₂ Methanation

Abahussain,

Al-Fatesh,

Rajput

et al. 2024

ACS Omega

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Auto‐Pressurized Multi‐Stage Tesla‐Valve Type Microreactors in Carbon Monoliths Obtained Through 3D Printing: Impact of Design on Fluid Dynamics and Catalytic Activity

Parra‐Marfil,

Aguilar‐Madera,

Pérez‐Cadenas

et al. 2024

Adv Funct Materials

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The present research exploits an innovative methodology for producing auto‐pressurized carbon microreactors with a precise and controlled structure analyzing the influence of their design on the fluid dynamics and their catalytic performance. Carbon monoliths with Tesla‐valve shape channels (Tesla, T, and modified Tesla, Tm) are synthesized through the combination of 3D printing and sol–gel process and further probed as Ni/CeO2 supports on CO2 methanation. The experimental results and mathematical modeling corroborated the improved performance obtained through the complex design compared to a conventional one. In addition to chaotic fluid flow induced by the deviation in flow direction, which improves the reagents‐active phase interaction, local pressure increases due to convergence of flows may enhance the Sabatier reaction according to Le Châtelier's principle. Conversely to straight channels, T and Tm are not affected by flow rate and presented chemical control. Tesla‐valve with curved angle (Tm) improved the mass transfer, achieving higher conversion and ≈30% reaction rate increase regarding right angle (T). Thus, this auto‐pressurized multi‐stage Tesla‐valve monolith opens the gate to design specific and advanced functional materials for multitude chemical reactions where not only the reactant‐active phase contact can be maximized but also the reaction conditions can be controlled to maximize the reaction kinetics.

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Production of High-Purity Methane via Sorption-Enhanced CO2 Methanation in an Adiabatic Packed Bed Reactor

Piso,

Bareschino,

Tregambi

et al. 2024

Computer Aided Chemical Engineering

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Selection and optimisation of a zeolite/catalyst mixture for sorption-enhanced CO2 methanation (SEM) process

Cited by 11 publications

References 71 publications

Impact of Sr Addition on Zirconia–Alumina-Supported Ni Catalyst for CO_x-Free CH₄ Production via CO₂ Methanation

Impact of Sr Addition on Zirconia–Alumina-Supported Ni Catalyst for CO_x-Free CH₄ Production via CO₂ Methanation

Auto‐Pressurized Multi‐Stage Tesla‐Valve Type Microreactors in Carbon Monoliths Obtained Through 3D Printing: Impact of Design on Fluid Dynamics and Catalytic Activity

Production of High-Purity Methane via Sorption-Enhanced CO2 Methanation in an Adiabatic Packed Bed Reactor

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Selection and optimisation of a zeolite/catalyst mixture for sorption-enhanced CO2 methanation (SEM) process

Cited by 11 publications

References 71 publications

Impact of Sr Addition on Zirconia–Alumina-Supported Ni Catalyst for COx-Free CH4 Production via CO2 Methanation

Impact of Sr Addition on Zirconia–Alumina-Supported Ni Catalyst for COx-Free CH4 Production via CO2 Methanation

Auto‐Pressurized Multi‐Stage Tesla‐Valve Type Microreactors in Carbon Monoliths Obtained Through 3D Printing: Impact of Design on Fluid Dynamics and Catalytic Activity

Production of High-Purity Methane via Sorption-Enhanced CO2 Methanation in an Adiabatic Packed Bed Reactor

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Product

Resources

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Impact of Sr Addition on Zirconia–Alumina-Supported Ni Catalyst for CO_x-Free CH₄ Production via CO₂ Methanation

Impact of Sr Addition on Zirconia–Alumina-Supported Ni Catalyst for CO_x-Free CH₄ Production via CO₂ Methanation