An intensification of the CO2 methanation reaction: Effect of carbon nanofiber network on the hydrodynamic, thermal and catalytic properties of reactors filled with open cell foams

Frey, Myriam; Romero, Thierry; Roger, Anne‐Cécile; Édouard, David

doi:10.1016/j.ces.2018.11.028

Cited by 20 publications

(15 citation statements)

References 18 publications

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“…IR thermography proved to be a potent method to investigate these phenomena, which would be difficult to identify with the standard temperature measurement devices [21]. The results here elucidated can be compared with several other studies available in literature, which applied IR spectroscopy in the analysis of the Sabatier reaction [9,15,17,[22][23][24][25].…”

Section: Introductionmentioning

confidence: 95%

Infrared Thermography as an Operando Tool for the Analysis of Catalytic Processes: How to Use It?

Mutschler¹,

Moioli²

2021

Preprint

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Infrared (IR) thermography is a powerful tool to measure temperature with a high space and time resolution. A particular interesting application of this technology is in the field of catalysis, where new insights to highly dynamic surface reactions are possible. This paper presents guidelines for the development of a reactor cell that can aid in the efficient exploitation of infrared thermography for the investigation of catalytic and other surface reactions. Firstly, the necessary properties of the catalytic reactor are described. In fact, special equipment must be developed to ensure the realization of true operando conditions in the IR thermography experiments. Here, we provide the guidelines to assemble a chemical reactor with an IR transmitting window through which the reaction can be studied with the infrared camera. Secondly, we analyze the requirements towards the catalytic system to be directly observable by IR thermography. This includes the need for a catalyst that provides a sufficiently high heat production (or absorption) rate. We present selected examples of catalytic reactions that can be monitored by IR thermography and showing the potential of the technology in revealing transient and steady state chemical phenomena.

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Section: Introductionmentioning

confidence: 95%

Infrared Thermography as an Operando Tool for the Analysis of Catalytic Processes: How to Use It?

Mutschler¹,

Moioli²

2021

Preprint

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“…Fillers have been demonstrated as an efficient way to improve melt strength, accelerate crystallization, and promote cell nucleation so as to tailor the cellular structure along with the mechanical, thermal, electrical, and other vital properties for broadening the functional application areas of thermoplastic microcellular foams with varying degrees of success [29,30]. The common fillers can best be treated as inorganic fillers such as talc [31], glass fiber [32], calcium carbonate [33], silica [34], and carbon-based materials [35][36][37], as well as organic fillers such as cellulose [17,18] and lignin from wood fibers [38]. In recent years, researchers have shown an increasing interest in carbon-based materials-particularly carbon nanotubes [39], carbon nanofibers [40], and graphene [41]-for their excellent electronic, thermal, magnetic, and mechanical properties.…”

Section: Basic Considerations Of Microcellular Foams Microcellular Fomentioning

confidence: 99%

A review of thermoplastic polymer foams for functional applications

Xie

Yang

et al. 2021

J Mater Sci

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Recently, functional applications of thermoplastic foams have received extensive attention from the research and materials communities, focusing on their various applications, key challenges, material systems designs, processing methods, and cellular structure characteristics needed for specific functional applications. This review paper starts with consideration of the microcellular foaming mechanism and basic concepts of microcellular foam processing, followed by polymer modification methods, and crucial factors that determine the performance of thermoplastic foams. Special emphasis has been placed on the synergies between foaming and reinforcements, including functional fillers and polymer blends; improvements in homogeneous, functional properties by achieving uniform cell structure and cell dispersion in polymer systems; and comparison of melt processing and solvent-based methods. Then, a wide array of advanced functional applications for foams-such as lightweight applications, heat and sound insulation, electromagnetic shielding, tissue engineering, oil spill cleanup, shape memory, and flexible materials-will be presented. In particular, the relationships between cellular structure and anticipated properties-including mechanical, barrier, dielectric, biomedical, and other properties required in advanced functional applications-will be discussed. Finally, we will outline a future perspective of lightweight and functional foams and suggest recommended future work regarding functional microcellular foams.

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“…), and Ni, which is the most widely used, shows high catalytic activity from 300 to 400 °C 28,31 . However, thermal runaway is a concern due to the highly exothermic reaction [32][33][34] . The use of a Ni-loaded MEPCM (Ni/MEPCM) instead of a conventional catalyst may suppress a significant rise in temperature.…”

Section: Co2 Methanation (Comentioning

confidence: 99%

Catalyst-loaded Micro-encapsulated Phase Change Material for Thermal Control of Exothermic Reaction

Takahashi

Koide

Sakai

et al. 2020

Preprint

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CO2 methanation is a promising technology to enable the use of CO2 as a resource. Thermal control of CO2 methanation, which is a highly active exothermic reaction, is important to avoid thermal runaway and subsequent degradation of the catalyst. Using the heat storage capacity of a phase change material (PCM) for thermal control of the reaction is a novel passive approach. In this study a novel structure was developed, wherein catalysts were directly loaded onto a micro-encapsulated PCM (MEPCM). The MEPCM was prepared in three steps consisting of a boehmite treatment, precipitation treatment, and heat oxidation treatment, and an impregnation process was adopted to prepare a Ni catalyst. The catalyst-loaded MEPCM did not show any breakage or deformation of the capsule or a decrease in the heat storage capacity after the impregnation treatment. MEPCM demonstrated a higher potential as an alternative catalyst support in CO2 methanation than the commercially available α-Al2O3 particle. In addition, the heat storage capacity of the catalyst-loaded MEPCM suppressed the temperature rise of the catalyst bed at a high heat absorption rate (2.4 MW m-3). In conclusion, the catalyst-loaded MEPCM is a high-speed, high-precision thermal control device because of its high-density energy storage and resolution of a spatial gap between the catalyst and cooling devices. This novel concept has the potential to overcome the technical challenges faced by efficiency enhancement of industrial chemical reactions.

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An intensification of the CO2 methanation reaction: Effect of carbon nanofiber network on the hydrodynamic, thermal and catalytic properties of reactors filled with open cell foams

Cited by 20 publications

References 18 publications

Infrared Thermography as an Operando Tool for the Analysis of Catalytic Processes: How to Use It?

Infrared Thermography as an Operando Tool for the Analysis of Catalytic Processes: How to Use It?

A review of thermoplastic polymer foams for functional applications

Catalyst-loaded Micro-encapsulated Phase Change Material for Thermal Control of Exothermic Reaction

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