Study on Hydrolysis of Ti(SO4)2 during the Preparation of Titania Coated Mica Pigments

Journal of Inorganic Materials

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Study on Hydrolysis of Ti(SO₄)₂ during the Preparation of Titania Coated Mica Pigments

ZHOU Jinghong; XIAO Wende; GU Yanfang⁺; GU Hongchen⁺; HU Liming⁺

Unilab Research Center of Chemical Reaction Enyineering; East China University of Science andTechnology Shanghai 200237 China; ⁺National Engineering Research Center of Ultrafine Powder; East China University of Science and Technology Shanghai 200237 China

Received:1996-03-29 Revised:1996-04-19 Published:1997-06-20 Online:1997-06-20

Abstract

Abstract: The influence of the initial concentration of titanium sulfate and reaction temperature onthe preparation of mica pearl pigments was studied by chedrical analysis method. The resultsindicated that both the initial concentration and the reaction temperature are sensitive faCtors inhydrolysis. The hydrolysis product self catalyzes the hydrolysis process. Also the action energyobtAlNed from the relation of temperature and the degree of hydrolysis of Ti4+ in the preparationof pigments(91.8kJ/mol) was lower than that in the titanium sulfate solution(140.4kJ/mol).

Key words: mica titania, hydrolysis, self catalyze, hydrous titania

ZHOU Jinghong,XIAO Wende,GU Yanfang,GU Hongchen,HU Liming. Study on Hydrolysis of Ti(SO₄)₂ during the Preparation of Titania Coated Mica Pigments[J]. Journal of Inorganic Materials.

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Study on Hydrolysis of Ti(SO₄)₂ during the Preparation of Titania Coated Mica Pigments

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