Dual active sites play a vital role in higher alcohols synthesis (HAS) from syngas and the relative proportion of each active sites may greatly affect the contact boundaries between the dual active sites and the reaction network. Herein, we regulated the ratio of Co⁰/Co₂C dual active sites by changing the content of Na promoter, and investigated the structure-performance relationship of Co⁰/Co₂C for HAS. It was found that both of the catalytic activity and paraffins selectivity increased with the increase of Co⁰/Co₂C ratio, while the formation of olefins was inhibited. However, the oxygenates selectivity exhibited a volcano variation trend. The results suggested that only when the Co⁰/Co₂C ratio was in the appropriate range, the strong synergistic effect of Co⁰/Co₂C dual-site could be obtained, and the CO insertion rate can thus match well with hydrogenation rate and chain-growth rate, which benefited for the oxygenates formation.

双活性位在合成气的高级醇合成（HAS）中起着至关重要的作用，每个活性位的相对比例可能会极大地影响双活性位与反应网络之间的接触边界。在本文中，我们通过改变Na启动子的含量来调节Co ⁰ / Co ₂ C双活性位的比例，并研究了Co ⁰ / Co ₂ C对HAS的结构-性能关系。发现随着Co ⁰ / Co ₂的增加，催化活性和石蜡选择性均增加。C比，同时抑制烯烃的形成。但是，含氧化合物的选择性表现出火山变化趋势。结果表明，只有当Co ⁰ / Co ₂ C比在合适的范围内时，才能获得Co ⁰ / Co ₂ C双位的强协同作用，从而使CO的插入率与加氢率相匹配。和链增长速率，这有助于形成氧化物。