A versatile route to fabricate single atom catalysts with high chemoselectivity and regioselectivity in hydrogenation

Xiaohui He, Qian He, Yuchen Deng, Mi Peng, Hongyu Chen, Ying Zhang, Siyu Yao, Mengtao Zhang, Dequan Xiao, Ding Ma (), Binghui Ge () and Hongbing Ji ()
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Xiaohui He: Sun Yat-sen University
Qian He: Sun Yat-sen University
Yuchen Deng: Peking University
Mi Peng: Peking University
Hongyu Chen: Sun Yat-sen University
Ying Zhang: Sun Yat-sen University
Siyu Yao: Peking University
Mengtao Zhang: Peking University
Dequan Xiao: University of New Haven
Ding Ma: Peking University
Binghui Ge: Institute of Physics, Chinese Academy of Sciences
Hongbing Ji: Sun Yat-sen University

Nature Communications, 2019, vol. 10, issue 1, 1-9

Abstract: Abstract Preparation of single atom catalysts (SACs) is of broad interest to materials scientists and chemists but remains a formidable challenge. Herein, we develop an efficient approach to synthesize SACs via a precursor-dilution strategy, in which metalloporphyrin (MTPP) with target metals are co-polymerized with diluents (tetraphenylporphyrin, TPP), followed by pyrolysis to N-doped porous carbon supported SACs (M1/N-C). Twenty-four different SACs, including noble metals and non-noble metals, are successfully prepared. In addition, the synthesis of a series of catalysts with different surface atom densities, bi-metallic sites, and metal aggregation states are achieved. This approach shows remarkable adjustability and generality, providing sufficient freedom to design catalysts at atomic-scale and explore the unique catalytic properties of SACs. As an example, we show that the prepared Pt1/N-C exhibits superior chemoselectivity and regioselectivity in hydrogenation. It only converts terminal alkynes to alkenes while keeping other reducible functional groups such as alkenyl, nitro group, and even internal alkyne intact.

Date: 2019
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DOI: 10.1038/s41467-019-11619-6

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