不同载体对Fe/Al2O3催化剂CO加氢性能的影响
Effect of Various Al2O3 Supports on CO Hydrogenation Performance over Supported Iron Catalysts
DOI: 10.12677/HJCET.2017.73017, PDF, HTML, XML, 下载: 1,973  浏览: 4,196 
作者: 刘治华, 周洪义：中国能源工程集团有限公司，北京；余长春, 李然家, 徐春明：中国石油大学(北京)，北京
关键词: 低碳烯烃；铁基催化剂；Al2O3载体；CO加氢性能；Light Olefins； Supported Iron Catalysts； Al2O3 Supports； CO Hydrogenation Performance
摘要: 选用不同Al2O3载体，采用浸渍法制备负载型铁基催化剂，利用N2-物理吸附(BET)、X射线衍射(XRD)、H2程序升温还原(H2-TPR)、CO/CO2程序升温脱附(CO/CO2-TPD)对催化剂进行表征，在空速为1000 h−1、反应温度为320℃、反应压力为2 MPa条件下，考察了不同Al2O3载体对铁基催化剂CO加氢性能的影响。结果表明：比表面积大的催化剂有利于活性组分的分散，提高了催化剂的反应活性。表面碱度高的催化剂，有利于提高CO解离吸附，提高CO的转化率和低碳烯烃的选择性。
Abstract: A series of Fe-based catalysts with different Al2O3 supports were prepared by slurry-impregnation method, characterized by BET, XRD, H2-TPD and CO/CO2-TPD, and tested under the conditions of T = 320˚C, P = 20 bar, GHSV= 1000 h−1. The results indicated that high surface area of catalysts had high dispersion, leading to high catalytic activity for CO hydrogenation performance. The high ca- talyst basicity enhanced CO adsorption and dissociation, accordingly, increased the catalytic acti- vity of the catalyst and the selectivity of light alkenes.
文章引用：刘治华, 周洪义, 余长春, 李然家, 徐春明. 不同载体对Fe/Al2O3催化剂CO加氢性能的影响[J]. 化学工程与技术, 2017, 7(3): 108-117. https://doi.org/10.12677/HJCET.2017.73017

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