Acetaldehyde oxidation under high humidity using a catalytic non-thermal plasma system over Mn-loaded Y zeolites

Acetaldehyde was removed using non-thermal plasma (NTP) combined with catalysis at ambient temperature under humid air conditions. Y zeolites with different SiO2/Al2O3 molar ratios (5, 30, 80) loaded on 5 wt% Mn were prepared. Under the no humidity condition, the acetaldehyde removal capacity was related to the specific surface area of Y. In the presence of humidity, however, the conversion of acetaldehyde was high in Y zeolites with a high SiO2/Al2O3 molar ratio having more hydrophobicity on the zeolite surface. The NTP system coupled with the hydrophobic zeolite catalyst was effective in acetaldehyde removal at room temperature in the presence of humidity. (C) 2019 Elsevier B.V. All rights reserved.