Abstract
A new heterogeneous catalyst for CO 2 activation was identified in the Cr II/SiO 2 Phillips catalyst, one of the most important catalysts used industrially for olefin polymerization. Interestingly, it was found that Cr II/SiO 2 strongly activates CO 2 already at room temperature, making it available for chemicals synthesis. A preliminary attempt in this direction was done by following the reaction of CO 2 with ethylene oxide at room temperature by means of FT-IR spectroscopy, which showed the formation of ethylene carbonate. Besides non-reductive CO 2 activation, Cr II/SiO 2 showed good performances in catalytic reduction of CO 2 to CO, when heated under mild conditions or irradiated with UV-Vis light. Both, in situ FT-IR and UV-Vis spectroscopy, were applied to highlight the redox process occurring at the Cr centres. These results open interesting perspectives to be developed in the field of CO 2 chemical fixation.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 6538-6543 |
| Number of pages | 6 |
| Journal | Physical Chemistry Chemical Physics |
| Volume | 14 |
| Issue number | 18 |
| DOIs | |
| State | Published - May 14 2012 |
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SDG 13 Climate Action
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