A novel silicalite-1 zeolite shell encapsulated iron-based catalyst for controlling synthesis of light alkenes from syngas
A novel silicalite-1 zeolite shell encapsulated iron-based catalyst for controlling synthesis of light alkenes from syngas
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DOI：
10.1016/j.catcom.2011.02.021
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发表时间：
2011-06
影响因子：
3.7
通讯作者：
Nanzhe Jiang;Guohui Yang;Xiongfu Zhang;Lei Wang;C. Shi;N. Tsubaki
中科院分区：
文献类型：
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作者：
Nanzhe Jiang;Guohui Yang;Xiongfu Zhang;Lei Wang;C. Shi;N. Tsubaki
采用分子筛晶种法和二次水热法生长分子筛壳的方法，成功制备了具有核（Fe/SiO2）-壳（Silicalite-1）结构的分子筛胶囊催化剂。对该沸石胶囊催化剂的表征表明，该催化剂具有致密、无缺陷的沸石壳层，并将催化剂核紧紧包裹在沸石壳层中。将该沸石胶囊催化剂应用于合成气费托合成（FTS）反应中。与传统的FTS催化剂相比，该沸石胶囊催化剂在控制合成低碳烯烃和抑制长链烃生成方面表现出优异的性能。
A well-designed zeolite capsule catalyst with a Core (Fe/SiO2)-Shell (Silicalite-1) structure was successfully prepared by zeolite seeding and then zeolite shell growing via secondary hydrothermal method. The characterization on this zeolite capsule catalyst indicated that it had a compact, defect-free zeolite shell enwrapping core catalyst tightly. The application of this zeolite capsule catalyst was the direct synthesis of light alkenes from syngas via Fischer–Tropsch synthesis (FTS) reaction. This zeolite capsule catalyst exhibited excellent abilities compared with the traditional FTS catalyst, both on the controlled synthesis of the desirable light alkenes and the suppressing formation of the undesired long-chain hydrocarbons.