Carbon-encapsulated highly dispersed FeMn nanoparticles for Fischer-Tropsch synthesis to light olefins
Carbon-encapsulated highly dispersed FeMn nanoparticles for Fischer-Tropsch synthesis to light olefins
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用于费托合成轻质烯烃的碳封装高度分散的 FeMn 纳米颗粒
DOI：
10.1039/c7nj04270a
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发表时间：
2018
影响因子：
3.3
通讯作者：
Fang Kegong
中科院分区：
文献类型：
--
作者：
Zhu Can;Zhang Mingwei;Huang Chao;Zhong Liangshu;Fang Kegong
高分散的FeMn纳米颗粒被碳层包裹，形成核壳结构。该催化剂（FeMn@C）在费托合成反应中表现出优异的催化活性、高的低碳烯烃选择性（40.6%）和优良的上级稳定性。此外，碳层的存在促进了合适粒径的χ-Fe 5C 2的形成，从而提高了催化剂的活性。特别是FeMn@C的核-壳结构，由于限制效应，也会影响烃类的分布和催化剂的稳定性。
Highly dispersed FeMn nanoparticles were encapsulated with a carbon layer to form a core–shell structure. This catalyst (FeMn@C) exhibited distinguished catalytic activity, high light-olefin selectivity (40.6%) and superior stability in the Fischer–Tropsch synthesis. Furthermore, it was revealed that the carbon layer facilitated the formation of χ-Fe5C2 with suitable particle size, which is responsible for the enhanced catalytic activity. In particular, the core–shell structure of FeMn@C could also influence the distribution of hydrocarbons and the catalyst stability due to the confinement effect.