I&EC 60 |
| Polymer-immobilized selenites, poly(1-ethyl-3-vinylimidazolium) methylselenite and poly(1-ethyl-4-vinylpyridinium) methylselenite were synthesized and tested for their activities in the oxidative carbonylation of aniline. FT-IR (NMR) and DSC studies clearly showed that methylselenites are tightly immobilized on the imidazolium and pyridinium polymers. These polymer-supported heterogeneous catalysts exhibited comparable activities to their corresponding homogeneous analogues, 1-ethyl-3-vinylimidazolium methylselenite and 4-vinylpyridinium methylselenite. The catalyst recycle tests showed that the immobilized catalysts can be reused at least up to five times without serious deactivation. |
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IEC Poster Session
8:00 PM-10:00 PM, Tuesday, August 21, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Industrial & Engineering Chemistry |