Breaking the dispersion-reducibility dependence in oxide-supported cobalt nanoparticles
Breaking the dispersion-reducibility dependence in oxide-supported cobalt nanoparticles
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DOI：
10.1016/j.jcat.2006.11.002
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发表时间：
2007-01
影响因子：
7.3
通讯作者：
Agustín Martínez;Gonzalo Prieto
中科院分区：
文献类型：
--
作者：
Agustín Martínez;Gonzalo Prieto
在反胶束核心合成的4 ~ 5 nm大小的钴金属纳米颗粒，在表面受保护的分层ITQ-2沸石上负载，其粒度分布非常窄，具有大颗粒的高还原性。本文提出的方法制备方法打破了氧化载体上支持的非常小的钴颗粒固有的分散性-还原性依赖，从而克服了研究高度分散钴基费托催化剂粒径效应的长期困难。
Cobalt metal nanoparticles ca. 4–5 nm in size synthesized in the core of reverse micelles and supported on surface-protected delaminated ITQ-2 zeolite display a very narrow particle size distribution and a high reducibility typical of larger particles. The methodological preparation approach presented here allows breaking of the dispersion–reducibility dependence inherent to very small cobalt particles supported on oxidic carriers, thereby overcoming long-lasting difficulties in studying particle size effects in highly dispersed cobalt-based Fischer–Tropsch catalysts.