التفاصيل البيبلوغرافية
| العنوان: |
Hydrogenation Kinetics of Metal Hydride Catalytic Layers |
| المؤلفون: |
Lars J. Bannenberg (2734762), Bart Boshuizen (10509850), Ferry Anggoro Ardy Nugroho (9874046), Herman Schreuders (1500304) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Biochemistry, Molecular Biology, Cancer, Computational Biology, Space Science, Biological Sciences not elsewhere classified, catalytic layers deposited, suitable capping material, five times shorter, additional ptfe layer, absolute hydrogenation rates, novel experimental method, experimental results aid, based materials turn, based capping materials, thin ta film, capping layer, film materials, experimental conditions, based systems, used method, response times, results demonstrate, taken together, significantly slower, significant effect, several alloys, rationally choosing, optical indicator, metal hydrides |
| الوصف: |
Catalyzing capping layers on metal hydrides are employed to enhance the hydrogenation kinetics of metal hydride-based systems such as hydrogen sensors. Here, we use a novel experimental method to study the hydrogenation kinetics of catalyzing capping layers composed of several alloys of Pd and Au as well as Pt, Ni, and Ru, all with and without an additional PTFE polymer protection layer and under the same set of experimental conditions. In particular, we employ a thin Ta film as an optical indicator to study the kinetics of the catalytic layers deposited on top of it and which allows one to determine the absolute hydrogenation rates. Our results demonstrate that doping Pd with Au results in significantly faster hydrogenation kinetics, with response times up to five times shorter than Pd through enhanced diffusion and a reduction in the activation energy. On the other hand, the kinetics of non-Pd-based materials turn out to be significantly slower and mainly limited by the diffusion through the capping layer itself. Surprisingly, the additional PTFE layer was only found to improve the kinetics of Pd-based capping materials and has no significant effect on the kinetics of Pt, Ni, and Ru. Taken together, the experimental results aid in rationally choosing a suitable capping material for the application of metal hydrides and other materials in a hydrogen economy. In addition, the used method can be applied to simultaneously study the hydrogenation kinetics in thin-film materials for a wide set of experimental conditions. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| Relation: |
https://figshare.com/articles/journal_contribution/Hydrogenation_Kinetics_of_Metal_Hydride_Catalytic_Layers/16900221 |
| DOI: |
10.1021/acsami.1c13240.s001 |
| الاتاحة: |
https://doi.org/10.1021/acsami.1c13240.s001 |
| Rights: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.AE7A60CE |
| قاعدة البيانات: |
BASE |