Photo-thermo semi-hydrogenation of acetylene on Pd1/TiO2 single-atom catalyst

• DOI: 10.1038/s41467-022-30291-x
• Publication Date: 2022-05-12T10:33:06Z
• Authors: Yalin Guo; Yike Huang; Bin Zeng; Bing Han; Mohcin AKRI; Ming Shi; Yue Zhao; Qinghe Li; Yang Su; Lin Li; Qike Jiang; Yi-Tao Cui; Lei Li; Rengui Li; Botao Qiao; Tao Zhang
• Keywords: Acetylene

Abstract Semi-hydrogenation of acetylene in excess ethylene is a key industrial process for purification. Supported Pd catalysts have attracted most attention due to their superior intrinsic activity but often suffer from low selectivity. single-atom (SACs) are promising significantly improve the selectivity, needs be improved and feasible preparation SACs remains grand challenge. Here, we report simple strategy construct 1 /TiO 2 by selectively encapsulating co-existed small amount nanoclusters/nanoparticles based on different strong metal-support interaction (SMSI) occurrence conditions. In addition, photo-thermo catalysis has been applied this where much-improved catalytic was obtained. Detailed characterization combined with DFT calculation suggests that photo-induced electrons transferred TiO adjacent atoms facilitate activation acetylene. This work offers an opportunity develop highly stable efficient semi-hydrogenation process.