A facile one-step synthesis to ionic liquid-based cross-linked polymeric nanoparticles and their application for CO2 fixation
作者： Yubing Xiong , Yujiao Wang , Hong Wang , Rongmin Wang
DOI: 10.1039/C1PY00201E
关键词:
摘要: Highly cross-linked polymeric nanoparticles (CLPNs) were prepared via a facile one-step synthesis, and these are effective catalysts for CO2 cycloaddition with epoxides. In this study, CLPNs synthesized by radical copolymerization of 4-vinylbenzyl-tributylphosphorous chloride (PIL) ethylene glycol dimethacrylate (EGDMA) in selective solvent, such as C1∼C5 alcohols. The results revealed that spherical the mean diameter range 10–100 nm could be alcohols, size facilely tuned feed ratio EGDMA to PIL. characterized using dynamic light scattering, scanning electron microscopy, transmission atomic force thermogravimetric analysis, atom absorbance spectrometry, Fourier transform infrared spectroscopy techniques. addition, can exploited highly active catalyst effects parameters, reaction temperature, pressure, time, amount, on investigated. As result, excellent yield (100%) selectivity cyclic carbonates achieved under mild conditions (0.1 g CLPNs, 3.0 MPa CO2, 140 °C 3 h) without addition any solvents or co-catalysts. Unexpectedly, dispersed products homogeneously, which resulted extremely high activity selectivity. At same easily separated filtration after pouring mixture into toluene. recycled six times less than 1.5% loss catalytic activity.
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