Kinetics and mechanism of the reduction of methylene blue by Sn(II) catalyzed by technetium

Solid‐State Synthesis of Silver Nanoparticles and Their Catalytic Application in Methylene Blue Reduction

“…Our results, related to MB reduction without catalyst, are in agreement with a previously reported study that reduction can be described by the first‐order reaction according to the eq. : …”

“…Also, it was found that the reduction of MB in the presence of technetium as a catalyst, follows the first‐order reaction through intermediate complex . The study also shows that reduction of MB, in the presence of metal NPs as a catalyst, follows pseudo‐first‐order reaction kinetics …”

Preparation of a Succinimidedioxime-Technetium Complex Using Sn(ll) as Reductant. Potentiometric- Photometric Study

“…It must be also considered that the reduced reagent can form complexes with the reduced technetium. On the other hand, in absence of technetium Sn(II) does not notably reduce the reagent; but, as it has been demonstrated recently [6][7][8] that technetium acts as a catalyst of diverse reduction processes in which Sn(II) is impHed. Probably, in this case when a-benzoinoxime reacts with pertechnetate in presence of Sn(II) reduction of the reagent catalysed by technetium takes place.…”

“…However, Information about mechanisms of complex formation is scarce. For this reason we have developed a program to study reactions of technetium in presence of a great number of ligands [6][7][8][9][10][11][12][13][14], with the aim to find information about the different reactions and mechanisms of complex formation. In this paper the reaction between technetium and succinimidedioxime is described, a ligand containing oxygen and nitrogen as heteroatoms and the results are compared with those obtained when a-benzoinoxime is üsed as reagent.…”

Kinetic determinations and some kinetic aspects of analytical chemistry

“…Two papers concerned with the catalytic activity of technetium were reported in the past two years. They dealt with the Tc-(Vll)-catalyzed reduction of l-amino-4-hydroxyanthraquinone (166) and Methylene Blue (167) by Sn(II). Technetium(V) seems to be involved in both reactions on account of its ability to bind to both reagents to form intermediate complexes.…”