Abstract：The hydrolysis process of low concentration titanium ion solution was investigated in this paper. The results showed that the hydrolysis rate increased rapidly at the initial stage of hydrolysis, and the hydrolysis rate increased slowly when the hydrolysis time exceeded 120 min, at this time the hydrolysis rate has reached 95%. Further prolonging the hydrolysis time, the hydrolysis rate of titanium ions increased slowly. When it reached 180 min, the hydrolysis rate reached 98%. The hydrolysis process of titanium ion was divided into two stages: the stage that hydrolysis reaction was mainly the formation process of crystal nucleus before 60 min and the stage that hydrolysis reaction was mainly the growth process of H2TiO3 particles after 60 min. The calculation showed that the crystallization process was polycentric crystallization deposition and each active crystallization center had only one H2TiO3 molecule participating in the reaction at a time, and each active point was a single molecule reaction.
WANG Minghua,ZHAO Zhe,JIA Pan’ao et al. Macrokinetics of Hydrolysis Reaction of Titanium Ion Solution[J]. Chemical Reaction Engineering and Technology, 2023, 39(5): 439-443.
