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THE ROLE OF INTERMEDIATE OXIDATION-STATES OF TECHNETIUM IN CATALYSIS OF THE OXIDATION OF HYDRAZINE BY OXO-ANIONS .1. NITRATE IONS
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UNSPECIFIED (1993) THE ROLE OF INTERMEDIATE OXIDATION-STATES OF TECHNETIUM IN CATALYSIS OF THE OXIDATION OF HYDRAZINE BY OXO-ANIONS .1. NITRATE IONS. JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS (17). pp. 2601-2605. ISSN 0300-9246.
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Abstract
The catalysis by technetium of the oxidation of hydrazine by nitric acid has been studied over a wide range of concentrations of hydrazine and nitric acid and also in media where HNO3 is replaced by HBF4. The reaction is confirmed as a chain process, exhibiting a higher turnover number of hydrazine molecules per atom of Tc and a kinetic profile consisting of an initial slow stage, a very fast stage and a termination stage characterised by a high residual concentration of unreacted hydrazine and the existence of all Tc in the form of the initial pertechnetate ion. A model of the reaction which is an elaboration of that devised earlier by Garraway and Wilson, reproduces the main characteristics of reaction over a much wider range of reactants than before. The strong effects of increasing the acid concentration are in the opposite direction for HNO3 and HBF4.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Journal or Publication Title: | JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | ||||
Publisher: | ROYAL SOC CHEMISTRY | ||||
ISSN: | 0300-9246 | ||||
Official Date: | 7 September 1993 | ||||
Dates: |
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Number: | 17 | ||||
Number of Pages: | 5 | ||||
Page Range: | pp. 2601-2605 | ||||
Publication Status: | Published |
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