Chinese Journal of Catalysis ›› 2014, Vol. 35 ›› Issue (12): 1921-1926.DOI: 10.1016/S1872-2067(14)60224-2

• Communications • Previous Articles     Next Articles

Preparation of palladium nanoparticle catalyst in ionic liquid and its catalytic properties for Heck-Mizoroki reaction

Furong Wang, Sisi Tang, Yinghao Yu, Lefu Wang, Biaolin Yin, Xuehui Li   

  1. School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering of China, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2014-07-04 Revised:2014-09-03 Online:2014-11-29 Published:2014-11-29
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21336002, 21276094) and the Specialized Research Fund for the Doctoral Program of Higher Education (20130172110043).

Abstract:

A palladium nanoparticle (PdNPs) catalyst was synthesized in halogen-free anion ionic liquid (1-buthyl-3-methylimidazolium lactate, [Bmim]Lac) by a simple chemical approach. The transmission electron microscopy analysis confirmed the presence of highly dispersed PdNPs in [Bmim]Lac with small average particle size distribution from 2.2 to 3.1 nm. The size of the PdNPs increases with decreasing molar ratio of [Bmim]Lac to Pd(OAc)2 and increasing temperature. The activity of PdNPs@[Bmim]Lac catalyst was tested by the Heck-Mizoroki reaction, and the conditions were optimized. The catalyst can efficiently catalyze couplings of various aryl bromides and iodides with different olefins, giving good yields of products under the optimal conditions and be recycled up to six consecutive times.

Key words: Palladium nanoparticles, Heck-Mizoroki reaction, 1-Buthyl-3-methylimidazolium lactate, Green ionic liquid