Several tertiary amine solutions with different structures were tested in the integrated CO capture and hydrogenation process in the presence of heterogeneous Pd/NAC catalysts. The tertiary amines of 3-dimethylamino-1,2-propanediol (3DMA-1,2-PD) and 3-diethylamino-1,2-propanedio (3DEA-1,2-PD) with high CO absorption capacity and high formate yield were selected as suitable candidates as CO capture and hydrogenation solvents. Under mild reaction conditions, a high formate yield of 68% was achieved when using 1 M 3DMA-1,2-PD solution with CO loading of 0.5 mol amine/mol CO. In addition, the physico-chemical properties of the Pd/NAC catalysts were examined and the reaction mechanism of CO absorption and hydrogenation in the presence of Pd/NAC was proposed.

中文翻译：

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CO2捕集与加氢一体化叔胺水溶液溶剂的合理设计

在多相 Pd/NAC 催化剂存在下，在集成 CO 捕获和加氢过程中测试了几种不同结构的叔胺溶液。 3-二甲氨基-1,2-丙二醇（3DMA-1,2-PD）和3-二乙氨基-1,2-丙二醇（3DEA-1,2-PD）的叔胺具有高CO吸收能力和高甲酸产率被选为 CO 捕获和氢化溶剂的合适候选者。在温和的反应条件下，当使用 CO 负载量为 0.5 mol 胺/mol CO 的 1 M 3DMA-1,2-PD 溶液时，甲酸收率高达 68%。此外，Pd/NAC 的物理化学性质对催化剂进行了检验，提出了 Pd/NAC 存在下 CO 吸收和加氢的反应机理。