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Plasma decompositions of n-butanol (n-b) in air over working gases of air (n-b/air with 21 vol.% O 2 ) and Ar (nb/ air/Ar with 5 vol.% O 2 ) were studied using an atmospheric-pressure plasma jet (APPJ) reactor with and without Pt/Al 2 O 3  catalyst. The utilization of catalytic APPJ (CAPPJ) shows excellent performance in terms of the conversion of n-butanol in n-b/air of 94.7% and n-b/air/Ar of 99.5% at plasma energy density = 3.75 kJ L -1  and space velocity = 17,400 h -1 . By comparing the working gases of air and Ar, the results indicate that n-b/air/Ar system exhibits slightly better performance than n-b/air system in APPJ and CAPPJ, suggesting that energetic primary electrons from Ar discharge would sufficiently retain the plasma reactive species for facilitating the decomposition of n-butanol. The proposed kinetic models show good agreement with the experimental data of APPJ and CAPPJ. The information obtained is useful for the operation, design and analysis of plasma system.

Destruction of n-butanol by an Atmospheric-pressure Plasma Jet over Air and Ar Working Gases with a Pt/Al 2 O 3 Catalyst