4.7 Article

Highly Active Isolated Single-Atom Pd Catalyst Supported on Layered MgO for Semihydrogenation of Acetylene

Journal

ACS APPLIED ENERGY MATERIALS
Volume -, Issue -, Pages -

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acsaem.2c02076

Keywords

trace-loading; palladium; magnesia; hydrogenation

Funding

  1. Photon Science Research Center for Carbon Dioxide?
  2. National Natural Science Foundation of China? [U1932119]
  3. National Key Basic Research Program of China? [2017YFA0403402]

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Selective hydrogenation of acetylene to ethylene is achieved using a highly efficient Pd/MgO catalyst loaded with ultralow levels of palladium. Palladium single-atom catalysts show excellent catalytic performance with the highest ethylene selectivity of 82%.
Selective hydrogenation of acetylene to ethylene is an important industrial reaction. In this work, we report a highly efficient Pd/MgO catalyst loaded with ultralow (0.05 wt %) levels of palladium for the selective hydrogenation of acetylene to ethylene. Palladium single-atom catalysts exhibited an excellent catalytic performance for semihydrogenation of acetylene with the highest ethylene selectivity of about 82% at 200 ? due to facile desorption of ethylene against the overhydrogenation to unwanted ethane. This work provides a very simple route to prepare a highly active, selective, and low-cost Pd catalyst for the semihydrogenation of acetylene.

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