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《China Chlor-Alkali》 2011-01
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Study on stability of aqueous sodium hypochlorite solution based on the theory of collision

LIU Shi-feng,LI-Lin,LU Li-xia(R&D Center,Guangzhou Liby Enterprise Group Co.,Ltd,Guangzhou 510170,China)  
The mechanism of sodium hypochlorite solution's decomposition was studied based on the theory of collision model.The main reaction equations of sodium hypochlorite solution's decomposition were obtained without catalysts.Research shows that the decomposition of sodium hypochlorite are cascade of reactions that mainly triggered by the hydrolysis of ClO-which to form HClO in a strong alkaline condition.Disproportionation of sodium hypochlorite is generated by the [O] which formed from hypochlorous's decomposition.The decomposition rate of sodium hypochlorite solution is related to the initial concentration of itself,but the change of pH value and free alkali,before and after reaction,is tiny.Rising temperatures can increase effective collision,so as to improve the reaction rate.The values of stability of sodium hypochlorite solution have not outstanding differences when the dosage of sodium silicate in sodium hypochlorite solution is 0%,0.2%,0.6% or 1.0%.
【CateGory Index】: TQ131.12
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