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An investigation of efficient microstructured reactor with monolith Co/anodic γ-Al2O3/Al catalyst in Fischer-Tropsch synthesis
International Journal of Hydrogen Energy ( IF 7.2 ) Pub Date : 2018-01-17
Li Zhang, Hualong Chu, Hao Qu, Qi Zhang, Hong Xu, Jun Cao, Zhiyong Tang, Jin Xuan

A new type of microstructured reactor was applied in Fischer-Tropsch synthesis (FTS). Monolith Co/anodic γ-Al2O3 plate type catalyst was adopted in the microstructured reactor which has the advantage that the microchannel was achieved through the gap between the catalyst plates, not machining. The γ- Al2O3 support was prepared on aluminum plate following the anodization method. And the cobalt was loaded on the anodic γ-Al2O3 support by impregnation. The thickness, morphology, structure, reduction behavior and the catalytic performance of the catalyst were characterized by scanning electron microscope (SEM), energy dispersive spectrometer (EDS), X-ray diffraction (XRD), as well as the H2 temperature-programmed reduction (H2-TPR). The performance of the catalyst and the microstructured reactor was experimentally characterized in FTS. The CO conversion (19.42%) with 2.7% of CH4 selectivity and 95.77% of C5+ selectivity was obtained with the newly designed microstructured reactor at 220 °C and 2.0 MPa under a gas hourly space velocity (GHSV) of 5,000 h−1. And the activity of the catalyst can be shown greatly in this microstructured reactor. Furthermore, the new developed microreactor is simpler in structure and easier to manufacture at low cost compared with the microchannel reactors requiring precise machining. And the deactivation catalyst after long period operation can be easily replaced for this kind of microstructured reactor.



中文翻译:

与整料钴高效微结构化反应器的调查/阳极的γ-Al 2 ö 3在费-托合成/铝催化剂

一种新型的微结构反应器已应用于费托合成(FTS)中。整料的Co /阳极的γ-Al 2 ö 3板类型催化剂,其中具有微通道是通过催化剂板之间的间隙,而不是机加工实现的优点的微结构反应器中通过。的γ-铝2 ö 3载体以下阳极氧化方法制备上的铝板。和钴装载在阳极的γ-Al 2 ö 3浸渍支持。通过扫描电子显微镜(SEM),能量色散谱仪(EDS),X射线衍射(XRD)以及程序升温的H 2表征了催化剂的厚度,形态,结构,还原行为和催化性能。还原(H 2 -TPR)。在FTS中通过实验表征了催化剂和微结构化反应器的性能。通过新设计的微结构反应器,在220°C和2.0 MPa的气体时空速(GHSV)为5,000 h-的条件下,获得了具有4.7%CH 4选择性和95.77%C 5+选择性的CO转化率(19.42%)。 1个。并且在该微结构化反应器中可以极大地显示催化剂的活性。此外,与需要精确加工的微通道反应器相比,新开发的微反应器结构更简单,制造成本更低。长期运行后的失活催化剂可以很容易地替换为这种微结构反应器。

更新日期:2018-01-17
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