The activation characteristics of the decomposition of H2O2 on palladium-carbon catalysts
| Autor: | V. F. Lapko, I. P. Gerasimyuk, V. S. Kuts, Yu. A. Tarasenko |
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| Rok vydání: | 2010 |
| Předmět: |
inorganic chemicals
Arrhenius equation Kinetics Inorganic chemistry chemistry.chemical_element Electronic structure Nanomaterial-based catalyst Catalysis Metal symbols.namesake chemistry Chemical engineering visual_art visual_art.visual_art_medium symbols Physical and Theoretical Chemistry Porosity Palladium |
| Zdroj: | Russian Journal of Physical Chemistry A. 84:934-940 |
| ISSN: | 1531-863X 0036-0244 |
| DOI: | 10.1134/s0036024410060087 |
| Popis: | The kinetics of catalytic decomposition of H2O2 on palladium-carbon catalysts with various deposited metal distributions in carrier (active carbon) porous granules was studied. The activation parameters (E a and A 0) of the process were calculated by the Arrhenius equation. A determining factor for the catalytic process was found to be the entropy factor (A 0), which characterized the formation and dissociation of activated transition complexes. A quantum-chemical study of the electronic structure of palladium-carbon catalysts showed the occurrence of electron density transfer from the carbon matrix to metal clusters and collectivization of their electronic systems. This increased the donor-acceptor ability of the synthesized materials and, as a consequence, their catalytic activity. |
| Databáze: | OpenAIRE |
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