Journal of the Chemical Society - Faraday Transactions p. 3389 - 3394 (1993)
Update date:2022-08-11
Topics:
Mills, Andrew
Sawunyama, Phillip
The kinetics of oxidative dissolution of a number of different samples of chromium(III) oxide by periodate ions in 1 mol dcm-3 HClO4 solution have been studied and the results interpreted using the inverse-cubic rate law.The metaperiodate acts as a two-electron oxidant and the overall reaction stoichiometry involves the reaction of 3 mol of periodate with 1 mol of Cr(III) oxide.From a detailed study of the kinetics of dissolution the rate-determining step appears to be the reaction between an adsorbed periodate ion and its associated Cr(III) oxide surface site, withinhibition by one of the reaction products, iodate, through competitive adsorption.Analysis of the kinetic data generates values for the Langmuir adsorption coefficients for periodate and iodate ions on highly hydrated Cr(III) oxide of 84 +/- 8 and 2600 +/- 370 dm3 mol-1, respectively.The Cr(III) oxide-periodate reaction has a high overall activation energy, 82 +/- 6 kJ mol-1.The kinetics of dissolution of highly hydrated Cr(III) oxide under conditions in which the simple inverse-cubic rate law function does not apply can be successfully predicted using a simple kinetic model.
Chengdu Pukang Biotechnology Co., Ltd
website:http://www.pu-kang.com
Contact:86-028-63976226
Address:No. 868 Xiwang Road,Xinjin county,Chengdu city, China
Jiaozuo Zhongwei Special Products Pharmaceutical Co.,Ltd.
website:http://www.zw-pvp.com
Contact:15302105619
Address:Jiaozuo,Henan,China (Mainland)
website:http://www.dulynet.com/
Contact:025-84699383 -8003
Address:Room 503, Building 2, Chuangxinhui, No. 61 Wenjing Road, High-tech Development Zone, Pukou District, Nanjing City, Jiangsu Province Nanjing, Jiangsu
Shijiazhuang Haotian Chemical Co., Ltd.
Contact:86-311-85044374
Address:293 Donggang Road
SHENZHEN PENGCHENG REDSTAR INDUSTRY CO.,LTD
Contact:+86-755-82412922
Address:Room 8066, East Block, Square City, Jiabin Road, Luohu District
Doi:10.1039/c7cy00902j
(2017)Doi:10.1016/S1872-2067(15)60854-3
(2015)Doi:10.1002/chem.201203113
(2013)Doi:10.1016/j.tetlet.2008.07.047
(2008)Doi:10.1021/ja00856a008
(1975)Doi:10.1021/jo00940a026
(1974)
