التفاصيل البيبلوغرافية
| العنوان: |
Unraveling the Synergistic Catalytic Effects of TiO 2 and Pr 6 O 11 on Superior Dehydrogenation Performances of α‑AlH 3 |
| المؤلفون: |
Long Liang (694897), Chunli Wang (615437), Mingan Ren (10911367), Shouliang Li (9418652), Zhijian Wu (167292), Limin Wang (87511), Fei Liang (483436) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Biophysics, Biochemistry, Genetics, Molecular Biology, Biotechnology, Ecology, Cancer, Computational Biology, Chemical Sciences not elsewhere classified, hydrogen source media, electron, bond, Pr 6 O 11, Synergistic Catalytic Effects, Superior Dehydrogenation Performances, hydrogen storage capacity, valence state conversions, dehydrogenation temperature, TiO 2, novel dehydrogenation pathway, AlH 3 |
| الوصف: |
The pivotal steps for the practical application of dehydrogenation of aluminum hydride (AlH 3 ) have been to decrease the temperature and increase the content of AlH 3 . Herein, the initial dehydrogenation temperature of AlH 3 decreased to 43 °C with the amount of released hydrogen of 8.3 wt % via introducing TiO 2 and Pr 6 O 11 with synergistic catalysis effects, and its apparent activation energy of the dehydrogenation reaction decreased to 56.1 kJ mol –1 , which is 52% lower than that of pure AlH 3 . These differences in performances of the samples are further evaluated by determining the electron density of Al–H bonds during dehydrogenation. The multiple valence state conversions of TiO 2 and Pr 6 O 11 promoted the electron transfer of H in AlH 3 , and a novel dehydrogenation pathway of PrH 2.37 formed simultaneously, which could accelerate the breakage of Al–H bonds. The density functional theory calculations further exhibit that there are fewer electrons around H in AlH 3 and the Al–H bond energy is weaker at the atomic levels, which is more conducive to the release of hydrogen. A higher hydrogen storage capacity and a lower dehydrogenation temperature make AlH 3 one of the most promising hydrogen source media for mobile applications. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| Relation: |
https://figshare.com/articles/journal_contribution/Unraveling_the_Synergistic_Catalytic_Effects_of_TiO_sub_2_sub_and_Pr_sub_6_sub_O_sub_11_sub_on_Superior_Dehydrogenation_Performances_of_AlH_sub_3_sub_/14717629 |
| DOI: |
10.1021/acsami.1c04534.s001 |
| الاتاحة: |
https://doi.org/10.1021/acsami.1c04534.s001 |
| Rights: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.AA8A2170 |
| قاعدة البيانات: |
BASE |