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• W2897641476 startingPage "8145" @default.
• W2897641476 abstract "Herein we report on two photoinduced reactions occurring at the surface of the CrVI/SiO2 Phillips catalyst. The first is the photoreduction of CrVI/SiO2 in CO at room temperature, that leads to the reduction of a fraction of the CrVI sites to CrIV(═O) intermediates and then to CrII. With respect to the thermal reduction of CrVI/SiO2 in CO, the relative amount of highly uncoordinated CrII sites is larger, suggesting that the relaxation of the CrII sites at the silica surface strongly depends on the temperature at which they are formed. The second is the photoinduced ethylene polymerization on CrVI/SiO2 at room temperature that is reported here for the first time. We demonstrate that UV–vis light has the potential to trigger the reduction of chromates by ethylene and the successive ethylene polymerization. Diffuse reflectance (DR) UV–vis and FT-IR spectroscopies allowed us to identify the nature of the Cr sites involved in the polymerization (i.e., 6-fold coordinated CrII) and of the oxidized byproducts rem..." @default.
• W2897641476 created "2018-10-26" @default.
• W2897641476 creator A5025030109 @default.
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• W2897641476 creator A5065237514 @default.
• W2897641476 creator A5081884564 @default.
• W2897641476 date "2018-10-14" @default.
• W2897641476 modified "2023-09-27" @default.
• W2897641476 title "Photoinduced Ethylene Polymerization on the Cr^VI/SiO₂ Phillips Catalyst" @default.
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