[2F04-06] Oxidation(2)

[2F06] Effects of UV-LED excitation on catalytic epoxidation of propylene

○Shigeru Sugiyama¹, Ikumi Okitsu¹, Kazuki Hashimoto¹, Naohiro Shimoda¹, Yuki Kato², Wataru Ninomiya² (1. Tokushima University, 2. Mitsubishi Chemical Co.)

The effect that UV-LED irradiation exerted on a sodium-modified silver catalyst supported on strontium carbonate (Ag-Na/SrCO₃) was examined during a direct epoxidation of propylene to propylene oxide. UV-LED irradiation of Ag(56)-Na(1)/SrCO₃ resulted in an evident improvement in the selectivity and yield of propylene oxide. We proposed a mechanism based on the plasmon excitation of silver, which could be accomplished using the irradiation wavelength of UV-LED to produce electrons derived from the plasmon excitation of silver.

Keywords:UV-LED, epoxidation, plasmon excitation