Ability of hydrogen storage CeNi5-xGax and Mg2Ni alloys to hydrogenate acetylene
Hydrogen storage properties and reactivity for hydrogenation of acetylene in a series of CeNi5-xGax (x = 0, 0.5, 0.75, 1, 1.25, 1.5) alloys and Mg2Ni were determined and compared. The structure of CeNi5 (CaCu5 type) was maintained up to CeNi3.5Ga1.5 when Ni was replaced by Ga. The replacement facili...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2019-12-01
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| Series: | Science and Technology of Advanced Materials |
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| Online Access: | http://dx.doi.org/10.1080/14686996.2019.1629836 |
| _version_ | 1818334818028486656 |
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| author | Ryota Tsukuda Ryo Yamagishi Satoshi Kameoka Chikashi Nishimura An-Pang Tsai |
| author_facet | Ryota Tsukuda Ryo Yamagishi Satoshi Kameoka Chikashi Nishimura An-Pang Tsai |
| author_sort | Ryota Tsukuda |
| collection | DOAJ |
| description | Hydrogen storage properties and reactivity for hydrogenation of acetylene in a series of CeNi5-xGax (x = 0, 0.5, 0.75, 1, 1.25, 1.5) alloys and Mg2Ni were determined and compared. The structure of CeNi5 (CaCu5 type) was maintained up to CeNi3.5Ga1.5 when Ni was replaced by Ga. The replacement facilitated hydrogenation absorption by creating larger interstitial spaces through expansion of the lattice, allowing CeNi4.25Ga0.75 to absorb the greatest proportion of hydrogen atoms among the alloys under the same conditions. The results showed that the absorbed hydrogen in CeNi3.75Ga1.25 improved reactivity. In contrast, Mg2Ni formed a hydride upon hydrogenation of acetylene and thus possessed much lower activity. The difference of the activity of absorbed hydrogen between CeNi5-xGax and Mg2Ni was confirmed from transient response tests under reaction gases alternately containing He and H2. |
| first_indexed | 2024-12-13T14:13:34Z |
| format | Article |
| id | doaj.art-e1ac6bb7322d480ab07786191afdcb42 |
| institution | Directory Open Access Journal |
| issn | 1468-6996 1878-5514 |
| language | English |
| last_indexed | 2024-12-13T14:13:34Z |
| publishDate | 2019-12-01 |
| publisher | Taylor & Francis Group |
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| series | Science and Technology of Advanced Materials |
| spelling | doaj.art-e1ac6bb7322d480ab07786191afdcb422022-12-21T23:42:24ZengTaylor & Francis GroupScience and Technology of Advanced Materials1468-69961878-55142019-12-0120177478510.1080/14686996.2019.16298361629836Ability of hydrogen storage CeNi5-xGax and Mg2Ni alloys to hydrogenate acetyleneRyota Tsukuda0Ryo Yamagishi1Satoshi Kameoka2Chikashi Nishimura3An-Pang Tsai4Tohoku UniversityTohoku UniversityTohoku UniversityNational Institute for Materials ScienceTohoku UniversityHydrogen storage properties and reactivity for hydrogenation of acetylene in a series of CeNi5-xGax (x = 0, 0.5, 0.75, 1, 1.25, 1.5) alloys and Mg2Ni were determined and compared. The structure of CeNi5 (CaCu5 type) was maintained up to CeNi3.5Ga1.5 when Ni was replaced by Ga. The replacement facilitated hydrogenation absorption by creating larger interstitial spaces through expansion of the lattice, allowing CeNi4.25Ga0.75 to absorb the greatest proportion of hydrogen atoms among the alloys under the same conditions. The results showed that the absorbed hydrogen in CeNi3.75Ga1.25 improved reactivity. In contrast, Mg2Ni formed a hydride upon hydrogenation of acetylene and thus possessed much lower activity. The difference of the activity of absorbed hydrogen between CeNi5-xGax and Mg2Ni was confirmed from transient response tests under reaction gases alternately containing He and H2.http://dx.doi.org/10.1080/14686996.2019.1629836intermetallic compound catalysthydrogen storage alloyhydrogenation of acetyleneceni5-xgaxmg2nireactivity of hydride |
| spellingShingle | Ryota Tsukuda Ryo Yamagishi Satoshi Kameoka Chikashi Nishimura An-Pang Tsai Ability of hydrogen storage CeNi5-xGax and Mg2Ni alloys to hydrogenate acetylene Science and Technology of Advanced Materials intermetallic compound catalyst hydrogen storage alloy hydrogenation of acetylene ceni5-xgax mg2ni reactivity of hydride |
| title | Ability of hydrogen storage CeNi5-xGax and Mg2Ni alloys to hydrogenate acetylene |
| title_full | Ability of hydrogen storage CeNi5-xGax and Mg2Ni alloys to hydrogenate acetylene |
| title_fullStr | Ability of hydrogen storage CeNi5-xGax and Mg2Ni alloys to hydrogenate acetylene |
| title_full_unstemmed | Ability of hydrogen storage CeNi5-xGax and Mg2Ni alloys to hydrogenate acetylene |
| title_short | Ability of hydrogen storage CeNi5-xGax and Mg2Ni alloys to hydrogenate acetylene |
| title_sort | ability of hydrogen storage ceni5 xgax and mg2ni alloys to hydrogenate acetylene |
| topic | intermetallic compound catalyst hydrogen storage alloy hydrogenation of acetylene ceni5-xgax mg2ni reactivity of hydride |
| url | http://dx.doi.org/10.1080/14686996.2019.1629836 |
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