期刊
APPLIED CATALYSIS A-GENERAL
卷 489, 期 -, 页码 188-192出版社
ELSEVIER
DOI: 10.1016/j.apcata.2014.10.044
关键词
Pd/graphene; Heck reactions; Catalytic activity
资金
- National Natural Science Foundation of China [11164012, 51462031]
- National Natural Science Foundation of Gansu Province [145RJZA218, 145RJZA097]
- Introduction of Talent project of Northwest University for Nationality [xbmuyjrc201307]
The graphene-supported Pd (Pd/graphene) catalyst was synthesized using the graphene oxide and Pd salt as precursor; then both Pd nanoparticles and graphene oxide were chemical reduced by hydrazine hydrate. Transmission electron microscope and powder X-ray diffraction analysis indicated the Pd nanoparticles, which supported on the surface of the graphene sheets with the size of 2-6 nm. The catalytic activity of Pd/graphene was investigated in Heck coupling reactions with activated and non-activated aryl substrates. The Pd/graphene composites exhibit an excellent catalytic activity, low Pd leaching, and reuse ability of at least five recycles in air for the Heck carbon-carbon coupling reaction. The experimental results showed the graphene sheets were great support for ligand-free Pd catalyst. (C) 2014 Elsevier B.V. All rights reserved.
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