JP2002293540A5 - - Google Patents

Claims (23)

In the primary particles, -O-Ti-X- bond (wherein X represents at least one element selected from carbon (C), nitrogen (N), phosphorus (P), sulfur (S)). ) Present in the form of particulate titanium oxide composites. The fine particle titanium oxide composite according to claim 1, wherein the average particle diameter of the primary particles is in the range of 0.008 μm to 0.3 μm. The particulate titanium oxide composite according to claim 1 or 2, wherein the reflectance of light having a wavelength of 550 nm is 95% or less. The particulate titanium oxide composite according to any one of claims 1 to 3, wherein the particulate titanium oxide composite has a BET specific surface area of 5 to 200 m ² / g. The particulate titanium oxide composite according to any one of claims 1 to 4, wherein the BET specific surface area reduction rate after heating at 700 ° C for 1 hour is 20% or less. 6. The fine particle titanium oxide composite has a core / shell structure formed of a dissimilar metal structure. 1 The particulate titanium oxide composite according to Item. At least one compound selected from a carbon-containing compound, a nitrogen-containing compound, a phosphorus-containing compound, and a sulfur-containing compound (hereinafter referred to as “non-Ti-based unless otherwise specified”) is used as a raw material gas containing titanium tetrachloride and an oxidizing gas. A method for producing a particulate titanium oxide composite , characterized by reacting a compound ”). The non-Ti compound is at least one compound selected from a carbon-containing compound excluding carbonate and organic acid salt, a nitrogen-containing compound excluding nitrate, a phosphorus-containing compound, and a sulfur-containing compound excluding sulfate. A method for producing a particulate titanium oxide composite according to claim 7. Non-Ti compounds are hydrocarbons having 1 to 20 carbon atoms, alcohols having 1 to 20 carbon atoms, ammonia, hydrazine, primary amines, secondary amines, and tertiary amines having 1 to 20 carbon atoms. and quaternary amines, phosphorus hydride, organic phosphorus having 1 to 20 carbon atoms, at least one selected from the group consisting of organic sulfides with hydrogen sulfide, and 1 to 20 carbon atoms, claim 7 The manufacturing method of the particulate titanium oxide composite as described in 2. Non Ti compound The method for producing a particulate titanium oxide complex according to any one of claims 7 to 9 is fed to the reaction tube in a state of gas. Non Ti compound is a solution or method of manufacturing a particulate titanium oxide complex according to any one of claims 7 to 9 is fed to the reaction tube in a slurry state. The method for producing a particulate titanium oxide composite according to claim 11 , wherein the solution or slurry is supplied by spraying. The method for producing a particulate titanium oxide composite according to claim 11 or 12 , wherein the solvent of the solution or slurry has a boiling point of 40 ° C or higher at atmospheric pressure. The supply of the non-Ti compound to the reaction tube is performed upstream of the reaction start point of the raw material gas containing titanium tetrachloride and the oxidizing gas, according to any one of claims 7 to 13. The manufacturing method of the particulate titanium oxide composite of description. The particulate titanium oxide according to any one of claims 7 to 14 , wherein the reaction is performed by supplying a raw material gas containing titanium tetrachloride and an oxidizing gas to the reaction tube at a flow rate of 10 m / sec or more, respectively. A method for producing a composite. The method for producing a particulate titanium oxide composite according to any one of claims 7 to 15 , wherein an average gas flow velocity in the reaction tube is 5 m / sec or more. The method for producing a particulate titanium oxide composite according to any one of claims 7 to 16 , wherein the raw material gas containing titanium tetrachloride contains 10 to 100% by volume of titanium tetrachloride. Method for producing a particulate titanium oxide complex according to any one of claims 7 to 17, characterized in that preheating the raw material gas and the oxidizing gas containing titanium tetrachloride at 700 ° C. or higher. A particulate titanium oxide composite produced by using the production method according to any one of claims 7 to 18 . A particulate titanium oxide composite composition comprising the particulate titanium oxide composite according to any one of claims 1 to 6 and 19 . A pigment, a dielectric material, a cosmetic, a garment, an ultraviolet shielding agent, an abrasive, a silicone rubber, and a paper comprising the particulate titanium oxide composite according to any one of claims 1 to 6 and 19. . A photocatalyst comprising the particulate titanium oxide composite according to any one of claims 1 to 6 and 19. A photocatalyst having visible light responsiveness, comprising the particulate titanium oxide composite according to any one of claims 1 to 6 and 19.