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Investigation on the rate of reaction between gas (CO2) and liquor (NaOH) phases
Chen Bin 1 * #,LI Xiao-bin 1,LIU Gui-hua 2
1.School of Metallurgical Science and Engineering ,Central South University
2.School of Metallurgical Science and Engineering -Central South University
*Correspondence author
#Submitted by
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Funding: none
Opened online:26 April 2005
Accepted by: none
Citation: Chen Bin,LI Xiao-bin,LIU Gui-hua.Investigation on the rate of reaction between gas (CO2) and liquor (NaOH) phases[OL]. [26 April 2005] http://en.paper.edu.cn/en_releasepaper/content/1933
 
 
The neutralization of sodium hydroxide by carbon dioxide occurring during the process of carbonization precipitation of sodium aluminate solution was investigated. Firstly, the effects of those main factors such as CO2 concentration、temperature、initial concentration of NaOH were investigated. Then the kinetics equation concerning this reaction was obtained after proper data treatment. The results showed that it assumes an apparent activation energy of 8.06 kJ/mol which indicated a diffusion-controlled process. Furthermore, based on the principles governing diffusion-controlled process, the dependence of neutralization rate on gas flow was deduced theoretically with a form as: rd=KDKCA(Q/VL)2/3 whose plausibility was validated by those experimental research thereafter.
Keywords:reaction between gas & liquor phase；sodium hydroxide；carbon dioxide；diffusion control；kinetics
 
 
 

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