Selective synthesis of higher alcohols from syngas conversion is highly desirable, but still very challenging. Here, focusing on the commonly used CuCoAl (CCA) catalyst, we attempted to reconcile the capability of the non-dissociation of CO species and the activation of H₂ through adding ZnO modified ZrO₂ composite into the catalyst for the promotion of higher alcohols synthesis. Under the guidance of such concept, a series of CCA|ZnO/ZrO₂ (m: n) modified catalysts (m: n, represent the mass ratio of ZnO to ZrO₂) were prepared by mortar-mixing CuCoAl and ZnO/ZrO₂ components (2/1 wt ratio). It was found that the CCA|ZnO/ZrO₂ (4:1) catalyst showed a highest total alcohols (ROH) selectivity of 42.6 wt% with excellent C₂₊OH/ROH fraction of 83.7% among the investigated catalysts. The surface [H*]/[C*] ratio of CCA|ZnO/ZrO₂ catalysts, as revealed by (CO + H₂)-TPD-MS results, increased with the rise of ZnO/ZrO₂ ratio. Moreover, the CCA|ZnO/ZrO₂ (4:1) catalyst with moderate [H*]/[C*] ratio could acquire the highest ROH selectivity and best space time yield of total alcohols (STY_ROH) due to that the balance of relative amount of CO*, CH_x* and H* species provided the more probability of C_nH_x*-CO* coupling reaction for higher alcohols synthesis, rather than the hydrogenation reaction of CH_x* or C_nH_x* species and water gas shift reaction.

从合成气转化中选择性合成高级醇是非常理想的，但仍然非常具有挑战性。在此，针对常用的CuCoAl（CCA）催化剂，我们尝试通过在催化剂中加入ZnO改性ZrO ₂复合物来促进CO物种的不解离和H ₂的活化，以促进高级醇的合成. 在此理念的指导下，通过砂浆混合CuCoAl和ZnO/ZrO ₂制备了一系列CCA|ZnO/ZrO ₂ (m:n)改性催化剂（m:n，代表ZnO与ZrO ₂的质量比）组分（2/1 重量比）。发现CCA|ZnO/ZrO ₂(4:1) 催化剂显示最高的总醇 (ROH) 选择性为 42.6 wt%，在所研究的催化剂中具有 83.7% 的优异 C ₂₊ OH/ROH 分数。(CO + H ₂ )-TPD-MS 结果表明，CCA|ZnO/ZrO ₂催化剂的表面 [H*]/[C*] 比值随着 ZnO/ZrO ₂比值的增加而增加。此外，具有中等 [H*]/[C*] 比的 CCA|ZnO/ZrO ₂ (4:1) 催化剂可以获得最高的 ROH 选择性和最佳的总醇 (STY _ROH )时空产率，这是由于平衡相对数量的 CO*、CH _x * 和 H* 物种提供了更多的 C _n H _x概率  *-CO*偶联反应用于高级醇的合成，而不是CH _x * 或C _n H _x * 物种的加氢反应和水煤气变换反应。