2-step reaction kinetics for hydrogen absorption into bulk material via dissociative adsorption on the surface
Abstract We have demonstrated that the process of hydrogen absorption into a solid experimentally follows a Langmuir-type (hyperbolic) function instead of Sieverts law. This can be explained by independent two theories. One is the well-known solubility theory which is the basis of Sieverts law. It e...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2021-09-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-98347-4 |
| _version_ | 1818343312811098112 |
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| author | Taro Yakabe Gaku Imamura Genki Yoshikawa Naoya Miyauchi Masahiro Kitajima Akiko N. Itakura |
| author_facet | Taro Yakabe Gaku Imamura Genki Yoshikawa Naoya Miyauchi Masahiro Kitajima Akiko N. Itakura |
| author_sort | Taro Yakabe |
| collection | DOAJ |
| description | Abstract We have demonstrated that the process of hydrogen absorption into a solid experimentally follows a Langmuir-type (hyperbolic) function instead of Sieverts law. This can be explained by independent two theories. One is the well-known solubility theory which is the basis of Sieverts law. It explains that the amount of hydrogen absorption can be expressed as a Langmuir-type (hyperbolic) function of the square root of the hydrogen pressure. We have succeeded in drawing the same conclusion from the other theory. It is a 2-step reaction kinetics (2sRK) model that expresses absorption into the bulk via adsorption on the surface. The 2sRK model has an advantage to the solubility theory: Since it can describe the dynamic process, it can be used to discuss both the amount of hydrogen absorption and the absorption rate. Some phenomena with absorption via adsorption can be understood in a unified manner by the 2sRK model. |
| first_indexed | 2024-12-13T16:28:35Z |
| format | Article |
| id | doaj.art-44045b1ca3004bfaa65c850b068e43e1 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-13T16:28:35Z |
| publishDate | 2021-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-44045b1ca3004bfaa65c850b068e43e12022-12-21T23:38:34ZengNature PortfolioScientific Reports2045-23222021-09-011111610.1038/s41598-021-98347-42-step reaction kinetics for hydrogen absorption into bulk material via dissociative adsorption on the surfaceTaro Yakabe0Gaku Imamura1Genki Yoshikawa2Naoya Miyauchi3Masahiro Kitajima4Akiko N. Itakura5Research Center for Advanced Measurement and Characterization, National Institute for Materials Science (NIMS)International Center for Materials Nanoarchitectonics, National Institute for Materials Science (NIMS)Center for Functional Sensor & Actuator, National Institute for Materials Science (NIMS)Research Center for Advanced Measurement and Characterization, National Institute for Materials Science (NIMS)Research Center for Advanced Measurement and Characterization, National Institute for Materials Science (NIMS)Research Center for Advanced Measurement and Characterization, National Institute for Materials Science (NIMS)Abstract We have demonstrated that the process of hydrogen absorption into a solid experimentally follows a Langmuir-type (hyperbolic) function instead of Sieverts law. This can be explained by independent two theories. One is the well-known solubility theory which is the basis of Sieverts law. It explains that the amount of hydrogen absorption can be expressed as a Langmuir-type (hyperbolic) function of the square root of the hydrogen pressure. We have succeeded in drawing the same conclusion from the other theory. It is a 2-step reaction kinetics (2sRK) model that expresses absorption into the bulk via adsorption on the surface. The 2sRK model has an advantage to the solubility theory: Since it can describe the dynamic process, it can be used to discuss both the amount of hydrogen absorption and the absorption rate. Some phenomena with absorption via adsorption can be understood in a unified manner by the 2sRK model.https://doi.org/10.1038/s41598-021-98347-4 |
| spellingShingle | Taro Yakabe Gaku Imamura Genki Yoshikawa Naoya Miyauchi Masahiro Kitajima Akiko N. Itakura 2-step reaction kinetics for hydrogen absorption into bulk material via dissociative adsorption on the surface Scientific Reports |
| title | 2-step reaction kinetics for hydrogen absorption into bulk material via dissociative adsorption on the surface |
| title_full | 2-step reaction kinetics for hydrogen absorption into bulk material via dissociative adsorption on the surface |
| title_fullStr | 2-step reaction kinetics for hydrogen absorption into bulk material via dissociative adsorption on the surface |
| title_full_unstemmed | 2-step reaction kinetics for hydrogen absorption into bulk material via dissociative adsorption on the surface |
| title_short | 2-step reaction kinetics for hydrogen absorption into bulk material via dissociative adsorption on the surface |
| title_sort | 2 step reaction kinetics for hydrogen absorption into bulk material via dissociative adsorption on the surface |
| url | https://doi.org/10.1038/s41598-021-98347-4 |
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