Department of Chemistry, University of California Berkeley, Berkeley, California, United States.
Nano Lett. 2012 Jun 13;12(6):3091-6. doi: 10.1021/nl300973b. Epub 2012 May 10.
Model cobalt catalysts for CO(2) hydrogenation were prepared using colloidal chemistry. The turnover frequency at 6 bar and at 200-300 °C increased with cobalt nanoparticle size from 3 to 10 nm. It was demonstrated that near monodisperse nanoparticles in the size range of 3-10 nm could be generated without using trioctylphosphine oxide, a capping ligand that we demonstrate results in phosphorus being present on the metal surface and poisoning catalyst activity in our application.
使用胶体化学制备了用于 CO(2)加氢的钴催化剂模型。在 6 巴和 200-300°C 的条件下，钴纳米颗粒尺寸从 3 纳米增加到 10 纳米时，周转频率增加。结果表明，无需使用三辛基氧化磷（一种封端配体），即可生成尺寸在 3-10nm 范围内的近单分散纳米颗粒，我们证明在我们的应用中，三辛基氧化磷会导致磷出现在金属表面上并使催化剂活性中毒。
