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使用浸渍法制备了一系列Co/SBA-16催化剂,并通过氮物理吸附、X射线衍射、氢程序升温还原、氢化学吸附和透射电镜技术对催化剂行了表征。研究表明,随着负载钴含量的增加,金属钴的分散度降低了,这是同Co3O4晶粒增长和比表面积降低相一致的。Co/SBA-16催化剂展示了高的一氧化碳转化率,低的C1选择性和高的C5+选择性,特别对柴油组分有高选择性。
A series of Co / SBA-16 catalysts were prepared by impregnation method. The catalysts were characterized by physical adsorption of nitrogen, X-ray diffraction, temperature programmed reduction of hydrogen, hydrogen chemisorption and transmission electron microscopy. The results show that with the increase of cobalt loading, the dispersion of metallic cobalt decreases, which is consistent with the decrease of grain growth and specific surface area of Co3O4. The Co / SBA-16 catalyst exhibits high carbon monoxide conversion, low C1 selectivity and high C5 + selectivity, with particular high selectivity to diesel components.