2013 Fiscal Year Final Research Report
Catalytic properties of quasicrystal alloys and their application to catalytic materials
| Project/Area Number |
24656484
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Catalyst/Resource chemical process
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| Research Institution | Tohoku University |
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Principal Investigator |
KAMEOKA Satoshi 東北大学, 多元物質科学研究所, 准教授 (60312823)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 触媒調製化学 / 準結晶合金 / 触媒材料 / リーチング / 合金化 / ナノ結晶合金 / ポーラス合金 |
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| Research Abstract |
Most Al-based quasicrystals (QCs) contain catalytically active metals such as Pd, Ni or Cu. Therefore, the catalytic properties of some QCs have been examined so far and results are found to be promising. The quasiperiodic structure of the Al-Cu-Fe QC plays an important role in the formation of a homogeneous leached layer that is responsible for the high activity and stability for steam reforming of methanol (SRM). In this study, we found that nanocrytalline Pd-TM alloys can be prepared by the selective leaching of Al from Al-Pd-TM (TM=Ni, Co) QCs. Alloying between Pd and TM occurred in a self-assembled manner during leaching process. The advantage of this method is that there is no restriction of reduction properties of the constituent metals because neither metal complexes nor metal salts were used in the process, and hence instead of core-shell structure, a homogeneous solid solution would be formed in nanoparticles.
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