用TG-DTA热分析技术,研究了F-T合成用Fe/Cu/K催化剂的还原性能,发现在H_2气氛下还原时,催化剂的物相变化为: α-Fe_2O_3→FeO_4→α-FeK助剂对还原起抑制作用,Cu助剂可使还原温度下降,起了促进还原的作用,助剂的加入及配比变化对第一步还原的影响尤为显著。TPR曲线的定量解析,得到了还原动力学参数v,E和n,并发现E是还原度α的线性函数,证明催化剂表面为非均匀表面,还从助剂Cu/K含量比发现了助剂对还原性能的影响规律。 The reduction performance of Fe / Cu / K catalyst for FT synthesis was studied by TG-DTA thermal analysis. It was found that the phase change of the catalyst was: α-Fe 2 O 3 → FeO 4 → α-FeK when reducing in H 2 atmosphere Restoration from the inhibition, Cu additives can reduce the temperature decreased, played a role in promoting the reduction, adding additives and the ratio of change on the first reduction is particularly significant. The quantitative analysis of TPR curve obtained kinetic parameters v, E and n, and found that E is a linear function of the degree of reduction α, the catalyst surface is proved to be non-uniform surface, but also from the additive Cu / K ratio found additives Impact on the reduction performance.