Kojima Takayuki, Kameoka Satoshi, Tsai An-Pang
Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Aramaki aza Aoba 6-3, Aoba-ku, Sendai 980-8578, Japan.
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan.
ACS Omega. 2017 Jan 19;2(1):147-153. doi: 10.1021/acsomega.6b00299. eCollection 2017 Jan 31.
In this study, we investigated the catalytic properties of various Heusler alloys for the hydrogenation of propyne and the oxidation of carbon monoxide. For propyne hydrogenation, CoFeGe alloy showed a higher activity than that of elemental Co, where neither Fe nor Ge showed any activity. This clearly indicates an alloying effect. For the oxidation of carbon monoxide, although most alloys showed a significant change in catalytic activity during measurement due to an irreversible oxidation of the alloy, CoTiSn alloy showed a very small change. The results indicate that the catalytic activity and stability of a Heusler alloy can be tuned by employing an appropriate set of elements.
在本研究中，我们研究了各种赫斯勒合金对丙炔加氢和一氧化碳氧化的催化性能。对于丙炔加氢，CoFeGe合金表现出比单质钴更高的活性，而铁和锗均未表现出任何活性。这清楚地表明了合金化效应。对于一氧化碳氧化，尽管大多数合金在测量过程中由于合金的不可逆氧化而使催化活性发生了显著变化，但CoTiSn合金的变化非常小。结果表明，通过使用合适的元素组合可以调节赫斯勒合金的催化活性和稳定性。
