期刊
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
卷 84, 期 6, 页码 934-940出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0036024410060087
关键词
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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.
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