Kim Gunjoo, Kwon Gihun, Lee Hyunjoo
Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, South Korea.
Chem Commun (Camb). 2021 Feb 14;57(13):1671-1674. doi: 10.1039/d0cc07514k. Epub 2021 Jan 19.
A single atomic Rh catalyst immobilized on zirconia (Rh/ZrO) was modified by hydrothermal treatment to have surface hydroxyl groups and used for direct methane oxidation. Both O and HO were used as oxidants. The amount of HO could be reduced with enhanced methanol productivity in the presence of the surface hydroxyl groups. The formation of the surface hydroxyl groups upon hydrothermal treatment and their disappearance upon reaction were confirmed with diffuse reflectance infrared Fourier transform spectroscopy, indicating that the surface hydroxyl groups participate in the surface reaction.
负载在氧化锆上的单原子铑催化剂（Rh/ZrO₂）经水热处理以具有表面羟基，并用于直接甲烷氧化。O₂和H₂O均用作氧化剂。在存在表面羟基的情况下，H₂O的量可随着甲醇生产率的提高而减少。通过漫反射红外傅里叶变换光谱证实了水热处理后表面羟基的形成及其在反应时的消失，这表明表面羟基参与了表面反应。
