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Published April 1977 | public
Journal Article

The Catalytic Decomposition of Formaldehyde on Palladium

Abstract

The decomposition of formaldehyde at a clean Pd surface (polycrystalline wire) was studied by mass spectrometry in a UHV flow system. H_2 and CO are the only reaction products which under stead-state conditions are already formed slightly above room temperature. Thermal description experiments revealed that hydrogen desorption takes place at higher temperatures than if present alone on the surface. Taking into account recent other measurements on the interaction of CH_2O as well as on the coadsorption of H_2 + CO on Pd surfaces a reaction scheme is proposed whereafter desorption of the products is rate-determining. The desorption energy of H_2 is, however, increased by attractive interactions between H_(ad) and CO(_ad).

Additional Information

© 1977 Akademische Verlagsgesellschaft Wiesbaden. Received November 15, 1976.

Additional details

Created:
August 19, 2023
Modified:
October 18, 2023