In order to investigate the effect of catalyst morphology on the kinetics modeling and mechanism of Fischer–Tropsch Synthesis (FTS), experiments were conducted on single-phase face-centered cubic NiCo₂O₄ catalysts with different morphologies in a fixed-bed reactor under identical operating conditions. A simple template-free hydrothermal method is presented for the preparation of NiCo₂O₄ nanowires (NiCo-NWs). In addition, hierarchical NiCo₂O₄ hollow microspheres (NiCo-HMS) and hierarchical NiCo₂O₄ microspheres (NiCo-MS) are prepared by hydrothermal method. Characterization of catalysts was carried out using BET, SEM, EDX, XRD and TEM techniques. The findings revealed that CO dissociation is closely dependent on the morphology of catalysts, and proceeds via H-assisted route over NiCo-NWs, but direct CO dissociation route occurs over NiCo-HMS and NiCo-MS. The kinetics models of all three catalysts were able to correctly predict the experimental rate data. The obtained kinetics parameters for FTS catalytic process over NiCo-NWs, NiCo-HMS and NiCo-MS are in good agreement with the literature reports.

为了研究催化剂形态对费托合成动力学模型（FTS）的动力学模型和机理的影响，在固定床反应器中，在不同床型下，对不同形态的单相面心立方NiCo ₂ O ₄催化剂进行了实验。相同的工作条件。提出了一种简单的无模板水热法制备NiCo ₂ O ₄纳米线（NiCo-NWs）。此外，分层NiCo ₂ O ₄空心微球（NiCo-HMS）和分层NiCo ₂ O ₄水热法制备了微球（NiCo-MS）。催化剂的表征使用BET，SEM，EDX，XRD和TEM技术进行。研究结果表明，CO的离解与催化剂的形态密切相关，并通过Ni-NWs上的H辅助途径进行，而直接的CO的离解途径则发生在NiCo-HMS和NiCo-MS上。所有三种催化剂的动力学模型都能够正确预测实验速率数据。在NiCo-NWs，NiCo-HMS和NiCo-MS上进行FTS催化过程的动力学参数与文献报道相吻合。