The direct transformation of syngas into C₂-oxygenates (e.g., ethanol) is in great demand, but it is still challenging because of the low selectivity and poor catalyst stability. Here, we overcome the issues and report a zeolite-fixation methodology to strengthen the transformation. By employing the extensively investigated RhMn catalyst, the silicate-1 zeolite-fixed RhMn nanoparticles with core-shell structure ([email protected]) exhibit high efficacy for the C₂ oxygenates production from syngas, giving oxygenate selectivity at 40.3% under CO conversion of 42.4% (C₂-oxygenate selectivity at 88.3% in the total oxygenates), which decidedly outperforms the previous catalysts in direct syngas-to-ethanol transformation. Multiple studies demonstrate that the rigid zeolite framework efficiently stabilizes the Mn-O-Rh^δ+ structure, known as the crucial site for C₂-oxygenate formation. In the long-term test, the [email protected] catalyst exhibits constant C₂-oxygenate productivities with superior durability. This investigation demonstrates the powerful siliceous zeolite support in the C₂-oxygenate production, which has not been explored previously.

合成气直接转化为C _2-含氧化合物（例如乙醇）的需求量很大，但由于选择性低和催化剂稳定性差，仍然具有挑战性。在这里，我们克服了这些问题，并报告了一种固定沸石的方法来加强转化。通过使用经过广泛研究的RhMn催化剂，具有核-壳结构（[电子邮件保护]）的硅酸盐-1沸石固定的RhMn纳米颗粒对合成气产生的C ₂含氧化合物具有很高的效力，在CO转化为CO的情况下，含氧化合物的选择性为40.3％。 42.4％（C ₂-含氧化合物在总含氧化合物中的选择性为88.3％），在直接合成气向乙醇的直接转化中，其性能明显优于先前的催化剂。多项研究表明，刚性沸石骨架有效地稳定了Mn-O- Rhδ ⁺结构，该结构被称为C ₂含氧化合物形成的关键部位。在长期测试中，[受电子邮件保护的]催化剂具有恒定的C _2-含氧化合物生产率，并具有出色的耐久性。这项研究证明了在C _2-含氧化合物生产中强大的硅质沸石载体，这是以前没有探索过的。