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Catalysis-tunable Heusler alloys in selective hydrogenation of alkynes: A new potential for old materials
Heusler alloys (X(2)YZ) are well-established intermetallic compound materials in various fields because their function can be precisely adjusted by elemental substitution (e.g., X(2)YZ(1−x)Z′(x)). Although intermetallic compound catalysts started attracting attention recently, catalysis researchers...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6195335/ https://www.ncbi.nlm.nih.gov/pubmed/30345356 http://dx.doi.org/10.1126/sciadv.aat6063 |
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author | Kojima, Takayuki Kameoka, Satoshi Fujii, Shinpei Ueda, Shigenori Tsai, An-Pang |
author_facet | Kojima, Takayuki Kameoka, Satoshi Fujii, Shinpei Ueda, Shigenori Tsai, An-Pang |
author_sort | Kojima, Takayuki |
collection | PubMed |
description | Heusler alloys (X(2)YZ) are well-established intermetallic compound materials in various fields because their function can be precisely adjusted by elemental substitution (e.g., X(2)YZ(1−x)Z′(x)). Although intermetallic compound catalysts started attracting attention recently, catalysis researchers are not familiar with Heusler alloys. We report their potential as novel catalysts focusing on the selective hydrogenation of alkynes. We found that Co(2)MnGe and Co(2)FeGe alloys have great alkene selectivity. Mutual substitution of Mn and Fe (Co(2)Mn(x)Fe(1−x)Ge) enhanced the reaction rate without changing selectivity. The substitution of Ga for Ge decreased the selectivity but increased the reaction rate monotonically with Ga composition. Elucidation of these mechanisms revealed that the fine tuning of catalytic properties is possible in Heusler alloys by separately using ligand and ensemble effects of elemental substitution. |
format | Online Article Text |
id | pubmed-6195335 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-61953352018-10-20 Catalysis-tunable Heusler alloys in selective hydrogenation of alkynes: A new potential for old materials Kojima, Takayuki Kameoka, Satoshi Fujii, Shinpei Ueda, Shigenori Tsai, An-Pang Sci Adv Research Articles Heusler alloys (X(2)YZ) are well-established intermetallic compound materials in various fields because their function can be precisely adjusted by elemental substitution (e.g., X(2)YZ(1−x)Z′(x)). Although intermetallic compound catalysts started attracting attention recently, catalysis researchers are not familiar with Heusler alloys. We report their potential as novel catalysts focusing on the selective hydrogenation of alkynes. We found that Co(2)MnGe and Co(2)FeGe alloys have great alkene selectivity. Mutual substitution of Mn and Fe (Co(2)Mn(x)Fe(1−x)Ge) enhanced the reaction rate without changing selectivity. The substitution of Ga for Ge decreased the selectivity but increased the reaction rate monotonically with Ga composition. Elucidation of these mechanisms revealed that the fine tuning of catalytic properties is possible in Heusler alloys by separately using ligand and ensemble effects of elemental substitution. American Association for the Advancement of Science 2018-10-19 /pmc/articles/PMC6195335/ /pubmed/30345356 http://dx.doi.org/10.1126/sciadv.aat6063 Text en Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Kojima, Takayuki Kameoka, Satoshi Fujii, Shinpei Ueda, Shigenori Tsai, An-Pang Catalysis-tunable Heusler alloys in selective hydrogenation of alkynes: A new potential for old materials |
title | Catalysis-tunable Heusler alloys in selective hydrogenation of alkynes: A new potential for old materials |
title_full | Catalysis-tunable Heusler alloys in selective hydrogenation of alkynes: A new potential for old materials |
title_fullStr | Catalysis-tunable Heusler alloys in selective hydrogenation of alkynes: A new potential for old materials |
title_full_unstemmed | Catalysis-tunable Heusler alloys in selective hydrogenation of alkynes: A new potential for old materials |
title_short | Catalysis-tunable Heusler alloys in selective hydrogenation of alkynes: A new potential for old materials |
title_sort | catalysis-tunable heusler alloys in selective hydrogenation of alkynes: a new potential for old materials |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6195335/ https://www.ncbi.nlm.nih.gov/pubmed/30345356 http://dx.doi.org/10.1126/sciadv.aat6063 |
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