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Catalyst-loaded micro-encapsulated phase change material for thermal control of exothermic reaction
| Title: | Catalyst-loaded micro-encapsulated phase change material for thermal control of exothermic reaction |
| Authors: | Takahashi, Tatsuya Browse this author | | Koide, Hiroaki Browse this author | | Sakai, Hiroki Browse this author | | Ajito, Daisuke Browse this author | | Kurniawan, Ade Browse this author | | Kunisada, Yuji Browse this author | | Nomura, Takahiro Browse this author →KAKEN DB |
| Issue Date: | 6-Apr-2021 |
| Publisher: | Nature Portfolio |
| Journal Title: | Scientific reports |
| Volume: | 11 |
| Issue: | 1 |
| Start Page: | 7539 |
| Publisher DOI: | 10.1038/s41598-021-86117-1 |
| Abstract: | 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 alpha -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 (2.5 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. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/82695 |
| Appears in Collections: | エネルギー・マテリアル融合領域研究センター (Center for Advanced Research of Energy and Material) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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