Atomically Dispersed Pd Atoms on a Simple MgO Support with an Ultralow Loading for Selective Hydrogenation of Acetylene to Ethylene

Chao Qin; Qing Guo; Jianping Guo; Ping Chen

doi:10.1002/asia.202100218

Atomically Dispersed Pd Atoms on a Simple MgO Support with an Ultralow Loading for Selective Hydrogenation of Acetylene to Ethylene

Chem Asian J. 2021 May 17;16(10):1225-1228. doi: 10.1002/asia.202100218. Epub 2021 Apr 26.

Authors

Chao Qin^{1

2}, Qing Guo^{1

2}, Jianping Guo^{1

2}, Ping Chen^{1

2}

Affiliations

¹ Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China.
² University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.

PMID: 33847446
DOI: 10.1002/asia.202100218

Abstract

We report a simple and efficient Pd/MgO catalyst loaded with ppm level of Pd (7.8 ppm) for semi-hydrogenation of acetylene to ethylene. The catalyst showed excellent performance with high acetylene conversion (97%), high ethylene selectivity (89%) and good stability. Moreover, the atomically dispersed Pd atoms are inactive for ethylene hydrogenation. Isotopic and FTIR results suggest that H₂ dissociates at isolated Pd atoms in a heterolytic manner forming O-H bond, which may account for the high selectivity.

Keywords: Atomically dispersed Pd atoms; MgO support; Selective hydrogenation of acetylene.

Abstract

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