Abstract
Temperature-programmed desorption (TPD) and oxidation (TPO) were used to study decomposition and oxidation of methanol, ethanol, acetaldehyde, formic acid, and acetic acid on aCuO/Al 2O 3 catalyst. The volatile organic compounds (VOCs) were adsorbed on the alumina surface and diffused to the CuO to react. Lattice oxygen in CuO is active for deep oxidation, and as lattice oxygen is depleted, diffusion of lattice oxygen to the surface limits the rate of oxidation. Supported CuO dehydrogenates and oxidizes VOCs and the order of reactivity is: HCOOH > CH 3OH > CH 3COOH > C 2H 5OH > C 2H 4O. Nearly all the oxygen in CuO can be extracted by VOCs. In the absence of gas-phase O 2, extraction of lattice oxygen limits the oxidation rates of acetaldehyde and acetic acid, but gas-phase O 2 rapidly replenishes the lattice oxygen. No less-reactive, partial oxidation products were detected.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
