New bimodal pore catalysts for Fischer–Tropsch synthesis
New bimodal pore catalysts for Fischer–Tropsch synthesis
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DOI：
10.1016/j.fuproc.2003.12.004
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发表时间：
2004-11
影响因子：
7.5
通讯作者：
M. Shinoda;Yi Zhang;Y. Yoneyama;K. Hasegawa;N. Tsubaki
中科院分区：
文献类型：
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作者：
M. Shinoda;Yi Zhang;Y. Yoneyama;K. Hasegawa;N. Tsubaki
提出了一种简单的制备双峰孔载体的方法，即直接将SiO2或ZrO2溶胶引入到SiO2凝胶颗粒的大孔中。所制备的双峰孔载体的孔分布明显，为两种主孔。另一方面，与原始硅胶相比，BET表面积增加，孔体积减小，表明所获得的双峰孔载体根据设计路线形成。将所得的双峰孔载体应用于钴负载的液相费托合成（FTS）。由于双峰孔结构的空间促进作用和多孔氧化锆的化学作用均表现在原始硅胶的大孔内部，双峰孔催化剂在液相FTS反应中表现出最佳的反应性能，具有较高的反应速率和较低的甲烷选择性。
A simple preparation method of bimodal pore supports was developed by introducing SiO2or ZrO2sols into large pores of SiO2gel pellets directly. The pores of the obtained bimodal pore supports distributed distinctly as two kinds of main pores. On the other hand, the increased BET surface area and decreased pore volume, compared to those of original silica gel, indicated that the obtained bimodal pore supports formed according to the designed route. The obtained bimodal pore supports were applied in liquid-phase Fischer–Tropsch synthesis (FTS) where cobalt was supported. The bimodal pore catalysts presented the best reaction performance in liquid-phase Fischer–Tropsch synthesis (FTS) as higher reaction rate and lower methane selectivities, because the spatial promotional effect of bimodal pore structure and chemical effect of the porous zirconia behaved inside the large pores of original silica gel.