Development of a powerful CO2 methanation process using a structured Ni/CeO2 catalyst

Ratchahat, Sakhon; Sudoh, Masao; Suzuki, Y.; Kawasaki, Wataru; Watanabe, Ryo; Fukuhara, Choji

doi:10.1016/j.jcou.2018.01.004

Cited by 97 publications

(40 citation statements)

References 27 publications

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“…Typically, Ni and specific noble metals such as Ru, Rh, and Pd are selected as active species on various supports [6][7][8][9][10][11][12][13][14][15][16]. Although Ni-based catalysts were commonly utilized due to their low cost and high activity [17][18][19][20], they were prone to suffer from the deactivation by metal sintering and carbon deposition even at low temperatures [21,22]. The nature of support also affected the state of an active phase involved in the adsorption and catalysis [23].…”

Section: Introductionmentioning

confidence: 99%

Low Temperature Methanation of CO2 on High Ni Content Ni-Ce-ZrOδ Catalysts Prepared via One-Pot Hydrothermal Synthesis

et al. 2019

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Ni-Ce-Zr-Oδ catalysts were prepared via one-pot hydrothermal synthesis. It was found that Ni can be partially incorporated into the Ce-Zr lattice, increasing surface oxygen species. The catalysts possess high surface areas even at high Ni loadings. The catalyst with Ni content of 71.5 wt.% is able to activate CO2 methanation even at a low temperature (200 °C). Its CO2 conversion and methane selectivity were reported at 80% and 100%, respectively. The catalyst was stable for 48 h during the course of CO2 methanation at 300 °C. Catalysts with the addition of medium basic sites were found to have better catalytic activity for CO2 methanation.

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Section: Introductionmentioning

confidence: 99%

Low Temperature Methanation of CO2 on High Ni Content Ni-Ce-ZrOδ Catalysts Prepared via One-Pot Hydrothermal Synthesis

et al. 2019

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“…Therefore, the structured catalyst with the stacked-type-fin enhanced the performance to improve the properties of the mass transfer in the reaction field. Additionally, the stability of the structured systems was successfully probed during almost 125 h. Later in another paper derived from this work, Fukuhara and coworkers presented a more comprehensive study of the use of metallic monoliths coated with Ni/CeO2 catalyst [136]. In this case, various configurations of metallic honeycomb-type reactors, which were plain, stacked, segment, and multi-stacked ( Figure 10) were constructed and evaluated under different reaction conditions (i.e., inlet temperature, feed flow rate and CO2 partial pressure), aiming to establish a suitable configuration for enhancing the heat transfer during the process.…”

Section: The Use Of Structured Reactors For the Sabatier Reactionmentioning

confidence: 95%

Policies and Motivations for the CO2 Valorization through the Sabatier Reaction Using Structured Catalysts. A Review of the Most Recent Advances

et al. 2018

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The current scenario where the effects of global warming are more and more evident, has motivated different initiatives for facing this, such as the creation of global policies with a clear environmental guideline. Within these policies, the control of Greenhouse Gase (GHG) emissions has been defined as mandatory, but for carrying out this, a smart strategy is proposed. This is the application of a circular economy model, which seeks to minimize the generation of waste and maximize the efficient use of resources. From this point of view, CO2 recycling is an alternative to reduce emissions to the atmosphere, and we need to look for new business models which valorization this compound which now must be considered as a renewable carbon source. This has renewed the interest in known processes for the chemical transformation of CO2 but that have not been applied at industrial level because they do not offer evident profitability. For example, the methane produced in the Sabatier reaction has a great potential for application, but this depends on the existence of a sustainable supply of hydrogen and a greater efficiency during the process that allows maximizing energy efficiency and thermal control to maximize the methane yield. Regarding energy efficiency and thermal control of the process, the use of structured reactors is an appropriate strategy. The evolution of new technologies, such as 3D printing, and the consolidation of knowledge in the structing of catalysts has enabled the use of these reactors to develop a wide range of possibilities in the field. In this sense, the present review presents a brief description of the main policies that have motivated the transition to a circular economy model and within this, to CO2 recycling. This allows understanding, why efforts are being focused on the development of different reactions for CO2 valorization. Special attention to the case of the Sabatier reaction and in the application of structured reactors for such process is paid.

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“…In other words, if the catalyst is deactivated irreversibly, the whole reactor has to be replaced because the catalyst is fixed on the inner surface of the reactor. Ratchahat et al [14] developed a honeycomb reactor for CO 2 methanation. Although the honeycomb was from aluminum with excellent thermal conductivity, the reactor had a temperature rise up to 136°C.…”

Section: Introductionmentioning

confidence: 99%

3D CFD Simulation of Reaction Cells, Cooling Cells, and Manifolds of a Flatbed Reactor for CO₂ Methanation

Ghaib¹

2020

Chem Eng & Technol

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The methanation of CO2 has attracted great interest in recent years as a technology to generate renewable synthetic natural gas and to recycle CO2 from different sectors. The actual development state of a flatbed reactor for the methanation of pure stoichiometric feed gas is presented. Additionally, computational fluid dynamics (CFD)‐based design strategies are introduced which can be applied for the development and optimization of different processing units. The results of the reactor development demonstrate a good heat exchange and flow distribution in the reactor.

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Development of a powerful CO2 methanation process using a structured Ni/CeO2 catalyst

Cited by 97 publications

References 27 publications

Low Temperature Methanation of CO2 on High Ni Content Ni-Ce-ZrOδ Catalysts Prepared via One-Pot Hydrothermal Synthesis

Low Temperature Methanation of CO2 on High Ni Content Ni-Ce-ZrOδ Catalysts Prepared via One-Pot Hydrothermal Synthesis

Policies and Motivations for the CO2 Valorization through the Sabatier Reaction Using Structured Catalysts. A Review of the Most Recent Advances

3D CFD Simulation of Reaction Cells, Cooling Cells, and Manifolds of a Flatbed Reactor for CO₂ Methanation

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Development of a powerful CO2 methanation process using a structured Ni/CeO2 catalyst

Cited by 97 publications

References 27 publications

Low Temperature Methanation of CO2 on High Ni Content Ni-Ce-ZrOδ Catalysts Prepared via One-Pot Hydrothermal Synthesis

Low Temperature Methanation of CO2 on High Ni Content Ni-Ce-ZrOδ Catalysts Prepared via One-Pot Hydrothermal Synthesis

Policies and Motivations for the CO2 Valorization through the Sabatier Reaction Using Structured Catalysts. A Review of the Most Recent Advances

3D CFD Simulation of Reaction Cells, Cooling Cells, and Manifolds of a Flatbed Reactor for CO2 Methanation

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Product

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3D CFD Simulation of Reaction Cells, Cooling Cells, and Manifolds of a Flatbed Reactor for CO₂ Methanation