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Breaking the scaling relationship via thermally stable Pt/Cu single atom alloys for catalytic dehydrogenation.
Sun, Guodong; Zhao, Zhi-Jian; Mu, Rentao; Zha, Shenjun; Li, Lulu; Chen, Sai; Zang, Ketao; Luo, Jun; Li, Zhenglong; Purdy, Stephen C; Kropf, A Jeremy; Miller, Jeffrey T; Zeng, Liang; Gong, Jinlong.
Afiliación
  • Sun G; Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering & Technology, Tianjin University, Tianjin, 30072, P. R. China.
  • Zhao ZJ; Collaborative Innovation Center for Chemical Science & Engineering (Tianjin), Tianjin, 30072, P. R. China.
  • Mu R; Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering & Technology, Tianjin University, Tianjin, 30072, P. R. China.
  • Zha S; Collaborative Innovation Center for Chemical Science & Engineering (Tianjin), Tianjin, 30072, P. R. China.
  • Li L; Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering & Technology, Tianjin University, Tianjin, 30072, P. R. China.
  • Chen S; Collaborative Innovation Center for Chemical Science & Engineering (Tianjin), Tianjin, 30072, P. R. China.
  • Zang K; Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering & Technology, Tianjin University, Tianjin, 30072, P. R. China.
  • Luo J; Collaborative Innovation Center for Chemical Science & Engineering (Tianjin), Tianjin, 30072, P. R. China.
  • Li Z; Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering & Technology, Tianjin University, Tianjin, 30072, P. R. China.
  • Purdy SC; Collaborative Innovation Center for Chemical Science & Engineering (Tianjin), Tianjin, 30072, P. R. China.
  • Kropf AJ; Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering & Technology, Tianjin University, Tianjin, 30072, P. R. China.
  • Miller JT; Collaborative Innovation Center for Chemical Science & Engineering (Tianjin), Tianjin, 30072, P. R. China.
  • Zeng L; Center for Electron Microscopy, Institute for New Energy Materials and Low-Carbon Technologies, School of Materials, Tianjin University of Technology, Tianjin, 300384, P. R. China.
  • Gong J; Center for Electron Microscopy, Institute for New Energy Materials and Low-Carbon Technologies, School of Materials, Tianjin University of Technology, Tianjin, 300384, P. R. China.
Nat Commun ; 9(1): 4454, 2018 10 26.
Article en En | MEDLINE | ID: mdl-30367052
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 (<400 °C), Pt/Cu SAA shows excellent stability of more than 120 h of operation under atmospheric pressure at 520 °C.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2018 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2018 Tipo del documento: Article Pais de publicación: Reino Unido