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

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-polymeri...

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Bibliographic Details
Published in:Nature communications 2019-08, Vol.10 (1), p.3663-9, Article 3663
Main Authors: He, Xiaohui, He, Qian, Deng, Yuchen, Peng, Mi, Chen, Hongyu, Zhang, Ying, Yao, Siyu, Zhang, Mengtao, Xiao, Dequan, Ma, Ding, Ge, Binghui, Ji, Hongbing
Format: Article
Language:English
Subjects:
639/166/898
639/638/77/884
639/638/77/887
Alkenes
Alkynes
Catalysis
Catalysts
Chemical synthesis
Chemists
Copolymerization
Diluents
Dilution
Functional groups
Humanities and Social Sciences
Hydrogenation
Metals
multidisciplinary
Noble metals
Organic chemistry
Pyrolysis
Regioselectivity
Science
Science (multidisciplinary)
Single atom catalysts
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Summary: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 (M 1 /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 Pt 1 /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. The general synthesis of single atom catalysts (SACs) is of broad interest to chemists but remains a formidable challenge. Here, with the precursor-dilution strategy, the authors successfully prepare 24 different SACs and the Pt SACs exhibit superior chemo- and regio-selectivity in hydrogenation.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-019-11619-6