Dissolution kinetics of colloidal manganese dioxide in aqueous hydrochloric acid at 298 K

被引：0
|
作者：
Md. Aminul Islam
M. Muhibur Rahman
机构：
[1] Ahsanullah University of Science and Technology (AUST),Department of Arts and Sciences, Faculty of Engineering
[2] University Grants Commission of Bangladesh,undefined
来源：
Russian Journal of Physical Chemistry A | 2015年 / 89卷
关键词：
colloid; kinetics; manganese dioxide; hydrochloric acid; dissolution;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The dissolution kinetics of colloidal MnO2 in aqueous hydrochloric acid is studied at 298 K by spectrophotometric methods. The decay profile of MnO2 monitored by measuring absorbance due to MnO2 at 390 nm was exponential. As the hydrochloric acid concentration was increased from 1.26 to 5.03 M, the dissolution rate of MnO2 to Mn(II) species decreased. The reaction followed fractional order kinetics with respect both to MnO2 and HCl concentrations. The average oxidation state approached a value of +2 indicating that HCl reduced Mn-species to Mn(II) species. Mechanism based on the observed kinetics has been proposed and discussed.
引用
收藏
页码：706 / 709
页数：3
相关论文
共 50 条
  • [41] Dissolution Kinetics of Icel-Aydincik Dolomite in Hydrochloric Acid
    Yildirim, Mehmet
    SOUTH AFRICAN JOURNAL OF CHEMISTRY-SUID-AFRIKAANSE TYDSKRIF VIR CHEMIE, 2008, 61 : 127 - 132
  • [42] Dissolution kinetics of manganese ore in water saturated with sulphur dioxide
    Yartasi, A
    Copur, M
    Kocakerim, MM
    1997 JUBILEE RESEARCH EVENT, VOLS 1 AND 2, 1997, : 1209 - 1212
  • [43] A study of dissolution kinetics of a Nigerian galena ore in hydrochloric acid
    Baba, Alafara A.
    Adekola, Folahan A.
    JOURNAL OF SAUDI CHEMICAL SOCIETY, 2012, 16 (04) : 377 - 386
  • [44] Dissolution kinetics of zirconium dioxide in nitric acid
    Prajapati, R. R.
    Srinivasan, T. G.
    Chandramouli, V.
    Bhagwat, S. S.
    DESALINATION AND WATER TREATMENT, 2014, 52 (1-3) : 490 - 497
  • [45] Effect of pKa on the kinetics of carbon dioxide absorption in aqueous alkanolamine solutions containing carbonic anhydrase at 298 K
    Penders-van Elk, Nathalie J. M. C.
    Fradette, Sylvie
    Versteeg, Geert F.
    CHEMICAL ENGINEERING JOURNAL, 2015, 259 : 682 - 691
  • [46] KINETICS OF THE BROMINATION OF ACETONE IN CONCENTRATED AQUEOUS HYDROCHLORIC ACID
    ARCHER, G
    BELL, RP
    JOURNAL OF THE CHEMICAL SOCIETY, 1959, (NOV): : 3228 - 3230
  • [47] Galvanic Interaction Between Galena And Manganese Dioxide In Hydrochloric Acid Medium Part I - Electrode Kinetics Studies
    Gantayat, B. P.
    Rath, P. C.
    Rao, S. B.
    Paramguru, R. K.
    TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, 2007, 60 (06) : 537 - 544
  • [48] Speciation of chromium aqua and chloro complexes in hydrochloric acid solutions at 298 K
    Uchikoshi, Masahito
    Akiyama, Daisuke
    Kimijima, Ken'ichi
    Shinoda, Kozo
    RSC ADVANCES, 2022, 12 (50) : 32722 - 32736
  • [49] Determination of the Distribution of Ferric Chloro Complexes in Hydrochloric Acid Solutions at 298 K
    Uchikoshi, Masahito
    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 2019, 92 (12) : 1928 - 1934
  • [50] Influence of Oxalic Acid on the Dissolution Kinetics of Manganese Oxide
    Godunov, E. B.
    Artamonova, I. V.
    Gorichev, I. G.
    Lainer, Yu. A.
    RUSSIAN METALLURGY, 2012, (11): : 935 - 941
12345