Microstructured catalytic hollow fiber reactor for methane steam reforming
Microstructured catalytic hollow fiber reactor for methane steam reforming
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DOI：
10.1021/ie504953j
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发表时间：
2015-06
影响因子：
4.2
通讯作者：
A. Gil;Zhentao Wu;D. Chadwick;Kang Li
中科院分区：
文献类型：
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作者：
A. Gil;Zhentao Wu;D. Chadwick;Kang Li
本研究制备了微结构氧化铝中空纤维，其包含多个径向微通道，内表面具有显着的开口，并用于开发高效的催化中空纤维反应器。除了传质阻力低之外，这种类型的独特结构还有助于掺入镍基催化剂，该催化剂可以有或没有老化的辅助载体 SBA-15。与固定床反应器相比，催化中空纤维反应器表现出类似的甲烷转化率，气时空速高出约6.5倍，二氧化碳选择性显着提高，生产率也更高。这些结果证明了将催化剂分散在微结构中空纤维内部的优点以及减少催化剂所需量的潜力。
Microstructured alumina hollow fibers, which contain a plurality of radial microchannels with significant openings on the inner surface, have been fabricated in this study and used to develop an efficient catalytic hollow fiber reactor. Apart from low mass-transfer resistance, a unique structure of this type facilitates the incorporation of Ni-based catalysts, which can be with or without the aged secondary support, SBA-15. In contrast to a fixed bed reactor, the catalytic hollow fiber reactor shows similar methane conversion, with a gas hourly space velocity that is approximately 6.5 times higher, a significantly greater CO2 selectivity, and better productivity rates. These results demonstrate the advantages of dispersing the catalyst inside the microstructured hollow fiber as well as the potential to reduce the required quantity of catalyst.