Catalytic effect comparison of TiO2 and La2O3 on hydrogen storage thermodynamics and kinetics of the as-milled La-Sm-Mg-Ni-based alloy
In this investigation, mechanical grinding was applied to fabricating the Mg-based alloys La7Sm3Mg80Ni10 + 5 wt.% M (M = None, TiO2, La2O3) (named La7Sm3Mg80Ni10–5 M (M = None, TiO2, La2O3)). The result reveals that the structures of as-milled alloys consist of amorphous and nanocrystalline. The par...
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| Format: | Article |
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KeAi Communications Co., Ltd.
2021-11-01
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| Series: | Journal of Magnesium and Alloys |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956721000608 |
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| author | Yanghuan Zhang Xin Wei Wei Zhang Zeming Yuan Jinliang Gao Huiping Ren |
| author_facet | Yanghuan Zhang Xin Wei Wei Zhang Zeming Yuan Jinliang Gao Huiping Ren |
| author_sort | Yanghuan Zhang |
| collection | DOAJ |
| description | In this investigation, mechanical grinding was applied to fabricating the Mg-based alloys La7Sm3Mg80Ni10 + 5 wt.% M (M = None, TiO2, La2O3) (named La7Sm3Mg80Ni10–5 M (M = None, TiO2, La2O3)). The result reveals that the structures of as-milled alloys consist of amorphous and nanocrystalline. The particle sizes of the added M (M = TiO2, La2O3) alloys obviously diminish in comparison with the M = None specimen, suggesting that the catalysts TiO2 and La2O3 can enhance the grinding efficiency. What's more, the additives TiO2 and La2O3 observably improve the activation performance and reaction kinetics of the composite. The time required by releasing 3 wt.% hydrogen at 553, 573 and 593 K is 988, 553 and 419 s for the M= None sample, and 578, 352 and 286 s for the M = TiO2 composite, and 594, 366, 301 s for the La2O3 containing alloy, respectively. The absolute value of hydrogenation enthalpy change |ΔH| of the M (M = None, TiO2, La2O3) alloys is 77.13, 74.28 and 75.28 kJ/mol. Furthermore, the addition of catalysts reduces the hydrogen desorption activation energy (Eade). |
| first_indexed | 2024-04-11T18:07:04Z |
| format | Article |
| id | doaj.art-000e36b58ab74b0186b59187c489165d |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2024-04-11T18:07:04Z |
| publishDate | 2021-11-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-000e36b58ab74b0186b59187c489165d2022-12-22T04:10:18ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672021-11-019620632077Catalytic effect comparison of TiO2 and La2O3 on hydrogen storage thermodynamics and kinetics of the as-milled La-Sm-Mg-Ni-based alloyYanghuan Zhang0Xin Wei1Wei Zhang2Zeming Yuan3Jinliang Gao4Huiping Ren5Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, No. 7 Aerding Road, Kun District, Baotou 014010, China; Department of Functional Material Research, Central Iron and Steel Research Institute, No. 76 Xueyuannan Road, Haidian District, Beijing 100081, China; Corresponding authors at: Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, No. 7 Aerding Road, Kun District, Baotou 014010, China.Department of Functional Material Research, Central Iron and Steel Research Institute, No. 76 Xueyuannan Road, Haidian District, Beijing 100081, ChinaDepartment of Functional Material Research, Central Iron and Steel Research Institute, No. 76 Xueyuannan Road, Haidian District, Beijing 100081, ChinaKey Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, No. 7 Aerding Road, Kun District, Baotou 014010, China; Department of Functional Material Research, Central Iron and Steel Research Institute, No. 76 Xueyuannan Road, Haidian District, Beijing 100081, China; Corresponding authors at: Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, No. 7 Aerding Road, Kun District, Baotou 014010, China.Weishan Cisri-Rare Earth Materials Co., Ltd., Jining 277600, ChinaKey Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, No. 7 Aerding Road, Kun District, Baotou 014010, ChinaIn this investigation, mechanical grinding was applied to fabricating the Mg-based alloys La7Sm3Mg80Ni10 + 5 wt.% M (M = None, TiO2, La2O3) (named La7Sm3Mg80Ni10–5 M (M = None, TiO2, La2O3)). The result reveals that the structures of as-milled alloys consist of amorphous and nanocrystalline. The particle sizes of the added M (M = TiO2, La2O3) alloys obviously diminish in comparison with the M = None specimen, suggesting that the catalysts TiO2 and La2O3 can enhance the grinding efficiency. What's more, the additives TiO2 and La2O3 observably improve the activation performance and reaction kinetics of the composite. The time required by releasing 3 wt.% hydrogen at 553, 573 and 593 K is 988, 553 and 419 s for the M= None sample, and 578, 352 and 286 s for the M = TiO2 composite, and 594, 366, 301 s for the La2O3 containing alloy, respectively. The absolute value of hydrogenation enthalpy change |ΔH| of the M (M = None, TiO2, La2O3) alloys is 77.13, 74.28 and 75.28 kJ/mol. Furthermore, the addition of catalysts reduces the hydrogen desorption activation energy (Eade).http://www.sciencedirect.com/science/article/pii/S2213956721000608Mg-based alloyBall millingCatalystsHydrogen storage kinetics |
| spellingShingle | Yanghuan Zhang Xin Wei Wei Zhang Zeming Yuan Jinliang Gao Huiping Ren Catalytic effect comparison of TiO2 and La2O3 on hydrogen storage thermodynamics and kinetics of the as-milled La-Sm-Mg-Ni-based alloy Journal of Magnesium and Alloys Mg-based alloy Ball milling Catalysts Hydrogen storage kinetics |
| title | Catalytic effect comparison of TiO2 and La2O3 on hydrogen storage thermodynamics and kinetics of the as-milled La-Sm-Mg-Ni-based alloy |
| title_full | Catalytic effect comparison of TiO2 and La2O3 on hydrogen storage thermodynamics and kinetics of the as-milled La-Sm-Mg-Ni-based alloy |
| title_fullStr | Catalytic effect comparison of TiO2 and La2O3 on hydrogen storage thermodynamics and kinetics of the as-milled La-Sm-Mg-Ni-based alloy |
| title_full_unstemmed | Catalytic effect comparison of TiO2 and La2O3 on hydrogen storage thermodynamics and kinetics of the as-milled La-Sm-Mg-Ni-based alloy |
| title_short | Catalytic effect comparison of TiO2 and La2O3 on hydrogen storage thermodynamics and kinetics of the as-milled La-Sm-Mg-Ni-based alloy |
| title_sort | catalytic effect comparison of tio2 and la2o3 on hydrogen storage thermodynamics and kinetics of the as milled la sm mg ni based alloy |
| topic | Mg-based alloy Ball milling Catalysts Hydrogen storage kinetics |
| url | http://www.sciencedirect.com/science/article/pii/S2213956721000608 |
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