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Report No.

Catalytic effect of Pt and Ag-loaded $$gamma$$-Al$$_{2}$$O$$_{3}$$ on the oxidation of xylene in air at low temperature under electron-beam irradiation

Hakoda, Teruyuki; Matsumoto, Kanae*; Mizuno, Akira*; Hirota, Koichi

The catalytic effect of Pt/Al$$_{2}$$O$$_{3}$$ and Ag/Al$$_{2}$$O$$_{3}$$ on the oxidation of xylene in air was studied at a constant temperature of 373 K, when they were combined with electron-beam (EB)-induced non-thermal plasmas (NTPs). The presence of a catalyst bed was found to enhance the oxidation of the irradiation products of xylene. However, the degree of catalytic oxidation was different depending on the type of loaded metal and the position of the catalyst bed. Compared with a Al$$_{2}$$O$$_{3}$$ bed, a Pt/Al$$_{2}$$O$$_{3}$$ bed in the NTP space suppressed oxidation, while an Ag/Al$$_{2}$$O$$_{3}$$ bed downstream of the NTP space enhanced it. Under low temperature conditions, Pt/Al$$_{2}$$O$$_{3}$$ was not a suitable catalyst for the oxidation of organics in combination with the NTP process. On the other hand, the Ag/Al$$_{2}$$O$$_{3}$$ catalyst was a preferable catalyst for the NTP-induced oxidation of organics under such low temperature conditions.



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