Platinum–copper single atom alloy catalysts with high performance towards glycerol hydrogenolysis

Xi Zhang, Guoqing Cui, Haisong Feng, Lifang Chen, Hui Wang, Bin Wang, Xin Zhang (), Lirong Zheng (), Song Hong () and Min Wei ()
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Xi Zhang: Beijing University of Chemical Technology
Guoqing Cui: Beijing University of Chemical Technology
Haisong Feng: Beijing University of Chemical Technology
Lifang Chen: Beijing University of Chemical Technology
Hui Wang: Beijing University of Chemical Technology
Bin Wang: Beijing Research Institute of Chemical Industry, Sinopec Group
Xin Zhang: Beijing University of Chemical Technology
Lirong Zheng: Institute of High Energy Physics, Chinese Academy of Sciences
Song Hong: Beijing University of Chemical Technology
Min Wei: Beijing University of Chemical Technology

Nature Communications, 2019, vol. 10, issue 1, 1-12

Abstract: Abstract Selective hydrogenolysis of biomass-derived glycerol to propanediol is an important reaction to produce high value-added chemicals but remains a big challenge. Herein we report a PtCu single atom alloy (SAA) catalyst with single Pt atom dispersed on Cu nanoclusters, which exhibits dramatically boosted catalytic performance (yield: 98.8%) towards glycerol hydrogenolysis to 1,2-propanediol. Remarkably, the turnover frequency reaches up to 2.6 × 103 molglycerol·molPtCu–SAA−1·h−1, which is to our knowledge the largest value among reported heterogeneous metal catalysts. Both in situ experimental studies and theoretical calculations verify interface sites of PtCu–SAA serve as intrinsic active sites, in which the single Pt atom facilitates the breakage of central C–H bond whilst the terminal C–O bond undergoes dissociation adsorption on adjacent Cu atom. This interfacial synergistic catalysis based on PtCu–SAA changes the reaction pathway with a decreased activation energy, which can be extended to other noble metal alloy systems.

Date: 2019
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DOI: 10.1038/s41467-019-13685-2

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