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Ability of hydrogen storage CeNi 5- x Ga x and Mg 2 Ni alloys to hydrogenate acetylene
Hydrogen storage properties and reactivity for hydrogenation of acetylene in a series of CeNi Ga ( = 0, 0.5, 0.75, 1, 1.25, 1.5) alloys and Mg Ni were determined and compared. The structure of CeNi (CaCu type) was maintained up to CeNi Ga when Ni was replaced by Ga. The replacement facilitated hydro...
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| Published in: | Science and technology of advanced materials 2019-12, Vol.20 (1), p.774-785 |
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| Main Authors: | , , , , |
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| Language: | English |
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| container_title | Science and technology of advanced materials |
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| creator | Tsukuda, Ryota Yamagishi, Ryo Kameoka, Satoshi Nishimura, Chikashi Tsai, An-Pang |
| description | Hydrogen storage properties and reactivity for hydrogenation of acetylene in a series of CeNi
Ga
(
= 0, 0.5, 0.75, 1, 1.25, 1.5) alloys and Mg
Ni were determined and compared. The structure of CeNi
(CaCu
type) was maintained up to CeNi
Ga
when Ni was replaced by Ga. The replacement facilitated hydrogenation absorption by creating larger interstitial spaces through expansion of the lattice, allowing CeNi
Ga
to absorb the greatest proportion of hydrogen atoms among the alloys under the same conditions. The results showed that the absorbed hydrogen in CeNi
Ga
improved reactivity. In contrast, Mg
Ni formed a hydride upon hydrogenation of acetylene and thus possessed much lower activity. The difference of the activity of absorbed hydrogen between CeNi
Ga
and Mg
Ni was confirmed from transient response tests under reaction gases alternately containing He and H
. |
| doi_str_mv | 10.1080/14686996.2019.1629836 |
| format | article |
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Ga
(
= 0, 0.5, 0.75, 1, 1.25, 1.5) alloys and Mg
Ni were determined and compared. The structure of CeNi
(CaCu
type) was maintained up to CeNi
Ga
when Ni was replaced by Ga. The replacement facilitated hydrogenation absorption by creating larger interstitial spaces through expansion of the lattice, allowing CeNi
Ga
to absorb the greatest proportion of hydrogen atoms among the alloys under the same conditions. The results showed that the absorbed hydrogen in CeNi
Ga
improved reactivity. In contrast, Mg
Ni formed a hydride upon hydrogenation of acetylene and thus possessed much lower activity. The difference of the activity of absorbed hydrogen between CeNi
Ga
and Mg
Ni was confirmed from transient response tests under reaction gases alternately containing He and H
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Ga
(
= 0, 0.5, 0.75, 1, 1.25, 1.5) alloys and Mg
Ni were determined and compared. The structure of CeNi
(CaCu
type) was maintained up to CeNi
Ga
when Ni was replaced by Ga. The replacement facilitated hydrogenation absorption by creating larger interstitial spaces through expansion of the lattice, allowing CeNi
Ga
to absorb the greatest proportion of hydrogen atoms among the alloys under the same conditions. The results showed that the absorbed hydrogen in CeNi
Ga
improved reactivity. In contrast, Mg
Ni formed a hydride upon hydrogenation of acetylene and thus possessed much lower activity. The difference of the activity of absorbed hydrogen between CeNi
Ga
and Mg
Ni was confirmed from transient response tests under reaction gases alternately containing He and H
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Ga
(
= 0, 0.5, 0.75, 1, 1.25, 1.5) alloys and Mg
Ni were determined and compared. The structure of CeNi
(CaCu
type) was maintained up to CeNi
Ga
when Ni was replaced by Ga. The replacement facilitated hydrogenation absorption by creating larger interstitial spaces through expansion of the lattice, allowing CeNi
Ga
to absorb the greatest proportion of hydrogen atoms among the alloys under the same conditions. The results showed that the absorbed hydrogen in CeNi
Ga
improved reactivity. In contrast, Mg
Ni formed a hydride upon hydrogenation of acetylene and thus possessed much lower activity. The difference of the activity of absorbed hydrogen between CeNi
Ga
and Mg
Ni was confirmed from transient response tests under reaction gases alternately containing He and H
.</abstract><cop>United States</cop><pmid>31447956</pmid><doi>10.1080/14686996.2019.1629836</doi><tpages>12</tpages></addata></record> |
| fulltext | fulltext |
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| ispartof | Science and technology of advanced materials, 2019-12, Vol.20 (1), p.774-785 |
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| language | eng |
| recordid | cdi_crossref_primary_10_1080_14686996_2019_1629836 |
| source | Taylor & Francis; PubMed Central |
| title | Ability of hydrogen storage CeNi 5- x Ga x and Mg 2 Ni alloys to hydrogenate acetylene |
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