Fischer–Tropsch synthesis on monolithic catalysts with oil circulation
Fischer–Tropsch synthesis on monolithic catalysts with oil circulation
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DOI：
10.1016/j.cattod.2005.06.032
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发表时间：
2005-08
期刊：
影响因子：
5.3
通讯作者：
A. Hilmen;E. Bergene;O. A. Lindvåg;D. Schanke;Sigrid Eri;A. Holmen
中科院分区：
文献类型：
--
作者：
A. Hilmen;E. Bergene;O. A. Lindvåg;D. Schanke;Sigrid Eri;A. Holmen
制备了γ-Al_2O_3和堇青石为载体的整体式催化剂，并将其用于F-T合成。在无油循环的情况下运行时，已有研究表明，在涂层负载量较低的情况下，经过洗涤的堇青石整体与相应的粉末催化剂一样具有同样的活性和选择性。两相操作，即在反应过程中有油/产品循环，可以改善散热和温度控制，降低表观活性和更快的失活，但C5+的选择性与没有油循环相当甚至更好。在目前的实验装置中，石油循环获得的较低的表观活性似乎是催化剂失活和与流动有关的问题的组合。
Monolithic catalysts made of cordierite and γ-Al2O3have been prepared and tested for the Fischer–Tropsch (FT) synthesis. When operated without oil circulation, washcoated cordierite monoliths have previously been shown to be as active and selective as the corresponding powder catalyst provided that the monoliths have low washcoat loadings. Two-phase operation, i.e. with oil/product circulation during reaction, resulted in improved heat removal and temperature control, in lower apparent activity and faster deactivation, but the C5+selectivity was equal to or even better than without oil circulation. The lower apparent activities obtained with oil circulation seem to be a combination of catalyst deactivation and flow-related problems in the present experimental set-up.