用于费-托合成的高分散型钴基催化剂

Highly Dispersed Supported Co Catalysts for Fischer-Tropsch Synthesis

负载型钴基催化剂是天然气基费-托合成的一种重要催化剂,其金属分散度和活性位密度是决定费-托合成反应活性和产物选择性(CH4%,C5+%)的关键因素。因此,提高金属钴的分散度和催化剂的还原度是提高金属钴的原子利用率、降低催化剂成本的一条有效途径。本文综述了近年来高分散型钴基催化剂的研究进展,重点探讨了催化剂制备方法、载体类型及贵金属助剂对催化剂分散度和还原性的影响,以及影响高分散型钴基催化剂费-托合成反应活性、产物选择性和反应稳定性的因素,并对负载型钴基催化剂今后的发展提出了一些建议。

The supported cobalt is one of important Fischer-Tropsch synthesis （FTS） catalysts, its catalytic activity and selectivity（i.e. CH4 %, C5＋ %）are strongly depended on the metallic Co site dispersion and density. Therefore, increasing metallic Co dispersion and catalyst reducibility provide the effective way to improve Co utilization efficiency and decrease catalyst cost. This paper summarizes the recent progress in highly dispersed supported Co FTS catalyst. We focus on the influences of preparation method, support type and the noble metal promoter metal dispersion. We also discuss the structural requirements for reaction stability and dispersed supported Co catalyst as well as propose some suggestion for supported Co catalyst on catalyst reducibility and FTS performance on highly development.