Titanium oxide particle and preparation method thereof

• Main Authors: FURUMOTO SHOYASU, UEKI YOSHINORI, KAYAMA SHIN
• Format: Patent
• Language: English
• Published: 11.02.2015
• Subjects: CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; INORGANIC CHEMISTRY; METALLURGY

The present invention provides a preparation method of titanium oxide partcles being less in the total content a of chloride and being good in uniformity and dispersibility. The preparation method of the titanium oxide particles includes: feeding a gas G1 containing titanium tetrachloride and an inert gas, and a gas G2 containing at least one of oxygen and steam and an inert gas into a reaction tube and performing a reaction to complete a first step for preparing the titanium oxide partcles; perfomring a dry dechlorination method to the crude titanium oxide for dechlorination, wherein the total amount of the first reaction step of introducing an inert gas pipe (gas G1 with the inert gas in the gas G2 the total amount), with respect to 1 mol of titanium tetrachloride is 1 mol or more and 50 mol or less, the gas G2 in the amount of inert gas, relative to 1 mol of gas G1 in the inert gas is less than 5 mol.