Incorporation of Pd Single‐Atom Sites in Perovskite with an Excellent Selectivity toward Photocatalytic Semihydrogenation of Alkynes

Author:

Yang Baoying1,Liu Kunlong1,Ma Yuhui1,Ma Jian‐Jie2,Chen Yi‐Yu2,Huang Meirong1,Yang Can1,Hou Yidong1,Hung Sung‐Fu2,Yu Jimmy C.3,Zhang Jinshui1,Wang Xinchen1ORCID

Affiliation:

1. State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China

2. Department of Applied Chemistry and Center for Emergent Functional Matter Science National Yang Ming Chiao Tung University Hsinchu 300 Taiwan

3. Department of Chemistry Chinese University of Hong Kong Shatin, New Territories Hong Kong 999077 China

Abstract

AbstractSemihydrogenation is a crucial industrial process. Noble metals such as Pd have been extensively studied in semihydrogenation reactions, owing to their unique catalytic activity toward hydrogen activation. However, the overhydrogenation of alkenes to alkanes often happens due to the rather strong adsorption of alkenes on Pd active phases. Herein, we demonstrate that the incorporation of Pd active phases as single‐atom sites in perovskite lattices such as SrTiO3 can greatly alternate the electronic structure and coordination environment of Pd active phases to facilitate the desorption of alkenes rather than further hydrogenation. Furthermore, the incorporated Pd sites can be well stabilized without sintering by a strong host–guest interaction with SrTiO3 during the activation of H species in hydrogenation reactions. As a result, the Pd incorporated SrTiO3 (Pd‐SrTiO3) exhibits an excellent time‐independent selectivity (>99.9 %) and robust durability for the photocatalytic semihydrogenation of phenylacetylene to styrene. This strategy based on incorporation of active phases in perovskite lattices will have broad implications in the development of high‐performance photocatalysts for selective hydrogenation reactions.

Publisher

Wiley

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