Breaking the scaling relationship via thermally stable Pt/Cu single atom alloys for catalytic dehydrogenation

Guodong Sun, Zhi-Jian Zhao, Rentao Mu, Shenjun Zha, Lulu Li, Sai Chen, Ketao Zang, Jun Luo, Zhenglong Li, Stephen C. Purdy, A. Jeremy Kropf, Jeffrey T. Miller, Liang Zeng and Jinlong Gong ()
Additional contact information
Guodong Sun: Tianjin University
Zhi-Jian Zhao: Tianjin University
Rentao Mu: Tianjin University
Shenjun Zha: Tianjin University
Lulu Li: Tianjin University
Sai Chen: Tianjin University
Ketao Zang: Tianjin University of Technology
Jun Luo: Tianjin University of Technology
Zhenglong Li: Oak Ridge National Laboratory
Stephen C. Purdy: Purdue University
A. Jeremy Kropf: Argonne National Laboratory
Jeffrey T. Miller: Purdue University
Liang Zeng: Tianjin University
Jinlong Gong: Tianjin University

Nature Communications, 2018, vol. 9, issue 1, 1-9

Abstract: Abstract Noble-metal alloys are widely used as heterogeneous catalysts. However, due to the existence of scaling properties of adsorption energies on transition metal surfaces, the enhancement of catalytic activity is frequently accompanied by side reactions leading to a reduction in selectivity for the target product. Herein, we describe an approach to breaking the scaling relationship for propane dehydrogenation, an industrially important reaction, by assembling single atom alloys (SAAs), to achieve simultaneous enhancement of propylene selectivity and propane conversion. We synthesize γ-alumina-supported platinum/copper SAA catalysts by incipient wetness co-impregnation method with a high copper to platinum ratio. Single platinum atoms dispersed on copper nanoparticles dramatically enhance the desorption of surface-bounded propylene and prohibit its further dehydrogenation, resulting in high propylene selectivity (~90%). Unlike previous reported SAA applications at low temperatures (

Date: 2018
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DOI: 10.1038/s41467-018-06967-8

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