Superoleophilic nanoporous polymeric ionic liquids loaded with palladium acetate: reactants enrichment and efficient heterogeneous catalysts for Suzuki-Miyaura coupling reaction

Fujian Liu; Gaofeng Feng; Mengyi Lin; Cong Wang; Baowei Hu; Chenze Qi

doi:10.1016/j.jcis.2014.08.010

Superoleophilic nanoporous polymeric ionic liquids loaded with palladium acetate: reactants enrichment and efficient heterogeneous catalysts for Suzuki-Miyaura coupling reaction

J Colloid Interface Sci. 2014 Dec 1:435:83-90. doi: 10.1016/j.jcis.2014.08.010. Epub 2014 Aug 23.

Authors

Fujian Liu¹, Gaofeng Feng², Mengyi Lin², Cong Wang², Baowei Hu², Chenze Qi³

Affiliations

¹ Key Laboratory of Alternative Technologies for Fine Chemicals Process of Zhejiang Province, Department of Chemistry, Shaoxing University, Shaoxing 312000, China; Department of Chemistry, Zhejiang University, Hangzhou 310007, China.
² Key Laboratory of Alternative Technologies for Fine Chemicals Process of Zhejiang Province, Department of Chemistry, Shaoxing University, Shaoxing 312000, China.
³ Key Laboratory of Alternative Technologies for Fine Chemicals Process of Zhejiang Province, Department of Chemistry, Shaoxing University, Shaoxing 312000, China. Electronic address: qichenze@usx.edu.cn.

PMID: 25218051
DOI: 10.1016/j.jcis.2014.08.010

Abstract

We report here successful synthesis of superoleophilic, nanoporous polymeric ionic liquids supported palladium acetate (PDVB-[C3vim][SO3CF3]-Pd-xs, where x stands for the weight percentage of palladium acetate), which act as efficient heterogeneous catalysts in Suzuki-Miyaura cross-coupling reaction. PDVB-[C3vim][SO3CF3] support was synthesized from solvothermal copolymerization of divinylbenzene with vinylimidazole without using any templates, followed by functionalized with ionic liquid groups. The resultant PDVB-[C3vim][SO3CF3]-Pd-xs possess large BET surface areas, good stability, homogeneous dispersion of Pd active species, and superwettability for various aromatic reactants, which result in their much improved reactants enrichment property. The above characters make PDVB-[C3vim][SO3CF3]-Pd-xs showed much improved catalytic activity and good recyclability in Suzuki-Miyaura reaction in comparison with those of palladium acetate supported onto activated carbon and ordered mesoporous silica of SBA-15. The superior activity found in PDVB-[C3vim][SO3CF3]-Pd-xs is attributed to synergistic effects between large surface areas and unique enrichment property for various aromatic reactants, which by themselves are capable of enhancing exposition degree of Pd active sites to reactants.

Keywords: Nanoporous polymeric ionic liquids; Reactants enrichment; Recyclability; Superoleophilic; Suzuki–Miyaura reaction.