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Journal of Chemistry
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2013
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Article
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Fig 3
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Research Article
Cycloaddition Reaction of Carbon Dioxide to Epoxides Catalyzed by Polymer-Supported Quaternary Phosphonium Salts
Figure 3
SEM images of chloromethylated bead (a and d), fresh PS-QPS (b and e), and used PS-QPS (c and f).