| Autor: |
Kokoreva, S., Shirshova, L., Kir'yakov, N., Shul'ga, Yu., Lavrent'ev, I. |
| Zdroj: |
Russian Chemical Bulletin; October 2000, Vol. 49 Issue: 10 p1722-1725, 4p |
| Abstrakt: |
Abstract: The products of interaction of components in the donor-acceptor electron-transport (DAET) DMSO−HBr system and their complex formation with the metallic palladium surface were studied. H2O and Me2S (main reaction products) and CO, CS2, C2H6, MeBr, H, and CH4 (minor reaction products) were found in the gas phase by mass spectrometry (MS). The samples of metallic palladium treated with the DAET system with a components ratio corresponding to the minimum and maximum rates of metal dissolution were studied by the methods of thermoprogrammed desorption with MS detection (TPD-MS) and XPS. According to the TPD-MS data, two forms of Me2S are present on the metal surface, whereas the XPS method detected two complexes with the molecular compositions PdIIBr4S1.26 and PdIIBr3.86S1.42. The addition of an aqueous solution of NaOH to the system results in the formation of HCOONa, which indicates that compounds (CH2O, HCOOH) capable of reducing the palladium complexes are present in the DAET system. |
| Databáze: |
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