Journal of Siberian Federal University. Chemistry / Features of Fine Iridium Powders Dissolution in Acidic Media

Full text (.pdf)
Issue
Journal of Siberian Federal University. Chemistry. 2017 10 (3)
Authors
Borisov, Roman V.; Belousov, Oleg V.; Dorokhova, Ludmila I.; Zhizhaev, Anatoliy M.
Contact information
Borisov, Roman V.: Institute of Chemistry and Chemical Technology SB RAS FRC “Krasnoyarsk Science Center SB RAS” 50/24 Akademgorodok, Krasnoyarsk, 660036, Russia; Siberian Federal University 79 Svobodny, Krasnoyarsk, 660041, Russia; ; Belousov, Oleg V.: Institute of Chemistry and Chemical Technology SB RAS FRC “Krasnoyarsk Science Center SB RAS” 50/24 Akademgorodok, Krasnoyarsk, 660036, Russia; Dorokhova, Ludmila I.: Institute of Chemistry and Chemical Technology SB RAS FRC “Krasnoyarsk Science Center SB RAS” 50/24 Akademgorodok, Krasnoyarsk, 660036, Russia; Zhizhaev, Anatoliy M.: Institute of Chemistry and Chemical Technology SB RAS FRC “Krasnoyarsk Science Center SB RAS” 50/24 Akademgorodok, Krasnoyarsk, 660036, Russia
Keywords
iridium; nanopowders; hydrothermal synthesis; dissolution; autoclave technologies; temperature; solutions
Abstract

The paper deals with the processes of dissolution of highly disperse iridium powders with sizes from 6 nm under hydrothermal conditions in hydrochloric acid solutions. Iridium powders with surface areas from 1 to 46 m2/g were synthesized in closed systems by reduction of aqueous solutions potassium hexachloroiridate( III). At temperatures from 170 to 195 °C, the dissolution processes of iridium powders in solutions of hydrochloric acid with additives of oxidants were investigated. The data regarding to the degree of dissolution of iridium powders as a function of dispersion, temperature, time, oxidizer are obtained

Pages
325-332
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/68939