Catalytic Oxidation Process and Thermal Characteristics of Toluene and Butyl Acetate Vapor in an Oven

Kenichiro Inoue

doi:10.59796/jcst.V14N1.2024.17

Authors

Kenichiro Inoue Tokyo Metropolitan Industrial Technology Research Institute, 2-4-10 Aomi, Koto-ku, Tokyo 135-0064, Japan

DOI:

https://doi.org/10.59796/jcst.V14N1.2024.17

Keywords:

by-products, Co3O4-CeO2, lower heating value, platinum, specific heat

Abstract

Toluene vapor and butyl acetate vapor were oxidized at 523 K in an oven using the Pt/Co₃O₄-CeO₂, Pt/Al₂O₃, and Co₃O₄-CeO₂ catalysts and a comparison of activity and thermal characteristic among three different catalysts was conducted. The conversion into CO₂ was estimated from the change in temperature of a catalyst bed during the oxidation reaction. A relation between heat capacity of the gas and amount of solvent molecule oxidized was clarified. In the oxidation with Pt/Al₂O₃ catalyst, the butyl acetate could not be completely oxidized, and part remained. Butanol and butanal were formed as by-products of the butyl acetate in the oven, which contained moist air. In the oxidation with Co₃O₄-CeO₂ catalyst, although no butyl acetate remained, some toluene remained and the amount of butanol and butanal increased somewhat after passage over the catalyst bed. By using a catalyst that combined platinum and Co₃O₄-CeO₂ with the original method, both the toluene and butyl acetate were almost completely oxidized at 523 K.

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