Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases p. 3245 - 3254 (1986)
Update date:2022-08-10
Topics:
Segal, Michael G.
Williams, William J.
A detailed study of the oxidative dissolution of chromium(III) oxide (Cr2O3) in potassium permanganate is reported.The kinetics of the reaction follow an inverse-cubic rate law under both acid and alkaline conditions; no inhibition by MnO2 product is observed.In alkaline solution, in the temperature range 43-140 degC, the rate exhibits dependences on permanganate and hydroxide concentrations which are explained in terms of a Langmuirian adsorption mechanism.The rate of dissolution is controlled by electron transfer within a surface complex in which bot OH(1-) and MnO4(1-) are bound.Thermodynamic parameters imply chemical bond formation between permanganate and ions in the oxide surface.A study in dilute HNO3 shows that adsorption of MnO4(1-) is also a prerequisite for reaction under acid conditions.
Zhejiang Newfine Industry Co.,Ltd.
Contact:+86-573-82262042
Address:No.225,Dongqing Road, garoms@163.com
Contact:86-571-87758773
Address:Room604 ,6F, Block A1-3 Xixi Plaza,No. 588 Wenyi West RD, Hangzhou,310012, China
LIAOYANG WANRONG CHEMICALS COMPANY LIMITED
Contact:86-419-2390789
Address:XINLI VILLAGE , DONG NINGWEI COUNTY,TAIZIHE DISTRICT, LIAOYANG , LIAONING
SEA BRGIHT INDUSTRY CO.,LIMITED
Contact:0086 755 8622 3990
Address:Rm 17B3,GuangCaiXinTianDi Bldg,GuiMiao Rd,NanShan District,Shenzhen,China
Guangzhou Congen Pharmatec Co.,Ltd.
website:https://www.congenpharma.com
Contact:86-020-82350801
Address:Room 501, Building G11, South China Advanced Materials Innovation Park, 31 Kefeng Road, Science City, Guangzhou, China 510663
Doi:10.1021/acs.joc.0c00817
(2020)Doi:10.1039/c3cy00269a
(2013)Doi:10.1002/zaac.201000165
(2010)Doi:10.1021/jf0302299
(2003)Doi:10.1016/j.ica.2020.119694
(2020)Doi:10.1039/c6cc05496j
(2016)
