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Issue
Korean Journal of Chemical Engineering,
Vol.16, No.1, 34-39, 1999
ADSORPTION OF COBALT(II) ION BY TITANIUM-BASED OXIDES IN HIGH TEMPERATURE WATER
Kim KR, Lee SH, Paek SW, Chung HS, Yoo JH
Titanium-based adsorbents such as TiO2 and Fe-Ti-O were prepared by hydrolysis of Ti(OC3H7)4 and alkalinizing an equimolar mixed solution of TiC14 and FeCl2 followed by heat treatment of their hydroxides, respectively. The prepared Fe-Ti-O adsorbent was found to be stable nonstoichiometric ferrous and ferric titanium oxides with pseudobrookite and rutile structures. The Co2+ adsorption characteristics of the adsorbent in high temperature water were investigated in the autoclave. Co2+ adsorption capacity of the Fe-Ti-O adsorbent was determined to be larger than that of TiO2 at high temperatures. The enthalpy changes of 34 and 49 kJ·mol-1 due to the adsorption of Co2+ on the TiO2 and Fe-Ti-O adsorbents indicate that the adsorption is endothermic in the experimental temperature range (15-280℃). From this preliminary study, titanium-based oxides are shown to have good potential applicability far reactor water purification as high temperature adsorption media.
Keywords: TiO2; Fe-Ti-O; Adsorbents; Cobalt(II) Ion; Reactor Water Purification
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[Cited By]
  1. Hur JM, Kim SH, Korean Journal of Chemical Engineering, 17(4), 433, 2000
  2. Zhao X, Jia Q, Zhou W, Korean Journal of Chemical Engineering, 26(6), 1729, 2009
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