Department of Materials and Environmental Chemistry, Stockholm University, 10691, Stockholm, Sweden.
Current address: Cambrex Karlskoga AB, 691 33, Karlskoga, Sweden.
ChemistryOpen. 2023 Jun;12(6):e202300060. doi: 10.1002/open.202300060.
A heterogenized alternative to the homogeneous precapture of CO with amines and subsequent hydrogenation to MeOH was developed using aminated silica and a Ru-MACHO catalyst. Commercial mesoporous silica was modified with three different amino-silane monomers and used as support for the Ru catalyst. These composites were studied by TEM and solid-state NMR spectroscopy before and after the catalytic reaction. These catalytic reactions were conducted at 155 °C at a H and CO pressures of 75 and 2 bar, respectively, with the heterogeneous system (gas-solid) being probed with gas-phase infrared spectroscopy used to quantify the resulting products. High turnover number (TON) values were observed for the samples aminated with secondary amines.
采用氨化硅胶和 Ru-MACHO 催化剂，开发了一种非均相替代方法，用于胺类物质对 CO 的均相预捕获，以及随后的加氢生成甲醇。商业介孔硅胶用三种不同的氨硅烷单体进行改性，用作 Ru 催化剂的载体。在催化反应前后，通过 TEM 和固态 NMR 光谱对这些复合材料进行了研究。这些催化反应在 H 和 CO 的压力分别为 75 和 2 巴的条件下于 155°C 进行，使用气相红外光谱对非均相体系（气-固）进行探测，以定量测定得到的产物。用仲胺进行氨化的样品观察到高的周转数（TON）值。
