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Novel one‐step synthesis to cross‐linked polymeric nanoparticles as highly active and selective catalysts for cycloaddition of CO 2 to epoxides
Author(s) -
Xiong Yubing,
Wang Yujiao,
Wang Hong,
Wang Rongmin,
Cui Zipeng
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.34622
Subject(s) - catalysis , nanoparticle , materials science , nanomaterial based catalyst , cycloaddition , thermogravimetric analysis , ethylene glycol , yield (engineering) , ionic liquid , polymer chemistry , selectivity , fourier transform infrared spectroscopy , chemical engineering , chemistry , organic chemistry , nanotechnology , composite material , engineering
Highly cross‐linked polymeric nanoparticles were prepared via novel one‐step synthesis by copolymerizing ethylene glycol dimethacrylate (EGDMA) and the ionic liquid, 1‐vinyl‐3‐(2‐methoxy‐2‐oxyl ethyl) imidazolium chloride ([VMIm]Cl). The results indicated that nanoparticles with the average size of about 350 nm could be obtained conveniently through the cross‐linking copolymerization. The nanoparticles were characterized using scanning electron microscopy, atomic force microscopy, Fourier transform Infrared, thermo gravimetric analysis, element analysis, and X‐ray diffraction techniques. Moreover, the cross‐linked polymeric nanoparticles were highly active and selective catalysts for the cycloaddition reaction of carbon dioxide to epoxides. The influences of reaction time, reaction temperature, CO 2 pressure, and amount of catalyst on yield of the products were investigated. The results revealed that cyclic carbonates with high yield (98.4%) and selectivity (100%) could be produced on the condition of 0.1 g catalyst, 5 MPa CO 2 , 160°C and 12 h. In addition, the nanocatalysts could be easily recovered by filtration, and reused several times with only slight loss of catalytic activity. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012