期刊
CATALYSTS
卷 10, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/catal10020192
关键词
palladium copper bimetallic catalyst; activated carbon; solvothermal reduction; Sonogashira coupling reaction
资金
- National Natural Science Foundation of China [21771122, 21602129, 21571121]
- 111 Project [B14041]
- Key Research and Development Project of Shaanxi Science and Technology Department [2017SF-064, 2017GY-124]
- Fundamental Research Funds for the Central Universities [GK201903026]
- Projects of Xi'an Modern Institute of Chemistry [204-J-2018-315-4/6, 204-J-2019-0387-3/6-6]
In the quest for efficient and recyclable heterogeneous catalysts for Sonogashira coupling reactions, a PEG-OMe (Methoxy Polyene Glycol) - mediated method was developed to immobilize Pd/Cu bimetallic nanoparticles on activated carbon (AC). Catalytic experiments showed that Pd/Cu@AC prepared in a PEG-OMe 500 had the highest activity. The morphology and composition of the catalyst were determined, and the identified crystallized and heterometallic nanoparticles of Pd/Cu were essential for an efficient catalytic cycle. The Pd/Cu@AC catalyst was successfully used in Sonogashira reactions (21 examples) including with aryl bromides as the coupling partner in EtOH at 80-100 degrees C. The catalyst was recycled at least nine times.
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