Complex compounds of platinum metals as catalysts for hydrogen revolution and possibilities for their joint determination
- Kazan State Univ. (Russian Federation)
The authors have previously published data on the mechanism giving rise to hydrogen catalytic currents (HCCs) in solutions of complexes of metals from the first transition series with organic ligands. Recently highly sensitive methods have been described for determination of Pt and Rh, Ru and Rh, and Os and Pt from HCCs using various reagents. Yet alongside the search for new catalytically active systems there remains the important problem of the mechanism of HCCs involving complexes of platinum metals especially with respect to the nature of the catalyst and the oxidation state of the central ion. Knowledge of the elementary acts in such a complex process as catalytic evolution of hydrogen makes it possible to form judgements on the overall pattern and details of individual stages of electron transfer and the reactivity of intermediates in order to make a rational choice of optimum conditions for a maximum analytical signal. This communication is intended to systematize processes causing HCCs arising during reduction at a dropping-mercury electrode (d.m.e.) of complexes of platinum metals with nitrogen- and sulfur-containing ligands such as dithiocarbamates (DTCs), xanthogenates (SGs), 8-mercaptoquinoline and its derivatives (MOs), 2-mercaptobenzthiazole (MBT), and 3-mercaptobenzimidazole (MBI) and to establish selective methods for analysis of materials containing platinum metals. 18 refs., 2 figs., 1 tab.
- OSTI ID:
- 232297
- Journal Information:
- Journal of Analytical Chemistry, Vol. 46, Issue 10; Other Information: PBD: 10 Apr 1992; TN: Translated from Zhurnal Analiticheskoi Khimii; 46: No. 10, 2004-2008(Oct 1991)
- Country of Publication:
- United States
- Language:
- English
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