论文部分内容阅读
研究了Ｆｅ－Ｍｎ－Ｋ催化剂ＦＴ合成动力学及产物分布规律，并探讨了反应条件对（ＣＯ＋Ｈ＿２）转化率及α－己烯／正己烷比的影响。结果表明，该催化剂的产物分布需用两个α才能较好地描述；反应温度及反应气氛下Ｈ＿２／ＣＯ比对α－己烯／正己烷比具有较大影响：最后获得的动力学方程为：－ｒ＿（Ｈ＿２＋ＣＯ）＝ａＰ＿（ＣＯ）Ｐ＿（Ｈ＿２）／（Ｐ＿（ＣＯ）＋ｂＰ＿（Ｈ＿２Ｏ）），从活化能的角度看，该粒度催化剂存在着内扩散效应。
The FT synthesis kinetics and product distribution of Fe-Mn-K catalyst were studied. The effects of reaction conditions on the conversion of (CO + H 2) and the ratio of α-hexene to n-hexane were also discussed. The results show that the product distribution of the catalyst needs two alphas to be well described. The reaction temperature and H 2 / CO ratio in the reaction atmosphere have a great influence on the ratio of α-hexene / n-hexane: the kinetic equation : -r_ (H_2 + CO) = aP_ (CO) P_ (H_2) / (P_ (CO) + bP_ (H_2O)). From the viewpoint of activation energy, the particle diffusion catalyst has internal diffusion effect.