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气-固相催化反应活性很大程度上依赖于反应组分在催化剂表面上的吸附与脱附行为,因此,研究反应组分在催化剂表面的吸附与脱附性质对了解催化剂表面活性部位分布、催化活性、反应机理等具有重要意义。本文用程序升温脱附(TPD)及稳态化学吸附研究了具有良好催化活性的F-T合成铁基催化剂对CO和H_2的吸附、脱附特性,并讨论了Cu、K助剂的影响。
The gas-solid catalytic activity relies to a large extent on the adsorption and desorption behavior of the reaction components on the catalyst surface. Therefore, the study on the adsorption and desorption properties of the reaction components on the catalyst surface is helpful to understand the distribution of the catalyst surface active sites, Catalytic activity, reaction mechanism is of great significance. In this paper, the adsorption and desorption properties of CO and H 2 on F-T iron-based catalysts with good catalytic activity were studied by temperature programmed desorption (TPD) and steady-state chemisorption. The effects of Cu and K promoters were discussed.