Catalysis

Graphene Encapsulated [email protected]/C Catalyst for Highly Selec- tive Semi-hydrogenation of Terminal Alkynes

Authors

  • Jianguo liu Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P. R. China. ,
  • Jiangmin Sun School of Energy Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China ,
  • Shanshan Lin Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P. R. China. ,
  • Longlong Ma Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P. R. China

Abstract

Although precious transition metals such as palladium, platinum, and iridium have been widely used in hydro- genation reactions, the earth-abundant transition metal-catalyzed highly selective semi-hydrogenation of alkynes, especially terminal alkynes to terminal alkenes remains challenging and poor developed. We demonstrate herein that excellent selective, cost-effective semi-hydrogenation of terminal alkynes can be realized via novel none precious graphene encapsulated [email protected]/C catalyst. The precise regulation of the graphene layer for the encapsulated nano-catalyst [email protected]/C can avoid metal leaching and increase catalytic stability significantly. Nitrogen has strong interaction with Ni nanoparticles, which regulate the activity of Ni towards selective semi-hydrogenation of terminal alkynes. The substrate having un-functionalized as well as functionalized substituents, challenging hydrogenation sensitive functional groups (olefins, ketones), were semi-hydrogenated with excellent conversion (up to 99%) and selectivity (up to 99%).

Content

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