Electrochemical amination. Ti(IV)/Ti(III) mediator system in aqueous solutions of sulfuric acid

Autor:	V. G. Shtyrlin, N. V. Busygina, Yu. I. Zyavkina, Yu. A. Lisitsyn
Rok vydání:	2010
Předmět:	Polarography Aqueous solution Inorganic chemistry Cationic polymerization Sulfuric acid Electrochemistry Redox Metal chemistry.chemical_compound chemistry visual_art visual_art.visual_art_medium Amination
Zdroj:	Russian Journal of Electrochemistry. 46:512-523
ISSN:	1608-3342 1023-1935
Popis:	As a result of polarographic and spectrophotometric studies, and mathematical modeling, the dependence of electrochemical properties of the Ti(IV)/Ti(III) pair on the composition of the Ti(IV) complexes is established in sulfuric acid solutions. It is found that Ti(IV) in 1–17 M H2SO4 at the metal ion concentrations used in the process of amination of aromatic compounds can exist in the form of twelve basic complex forms, of which seven, including the binuclear and two tetranuclear ones, are observed for the first time. Ten forms are electrochemically active. An increase in the overall amount of reversibly reducing cationic mononuclear hydrosulfate complexes of Ti(IV) among these at a growing H2SO4 concentration results in an increase in the redox potential of the Ti(IV)/Ti(III) mediator system and therefore in an increase in the yield of the electrochemical amination products.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::96450b601b2bc81dd47bcdd0ba92e5b9 https://doi.org/10.1134/s1023193510050046 Zobrazit plný text záznamu Full text from SpringerLink