Method for producing particulate titanium oxides

Patent · Tue Jul 09 04:00:00 EDT 1991

OSTI ID:5547933

Brownbridge, T I

This patent describes a method for producing particulate titanium dioxide from titanium tetrahalides. It comprises forming a first aqueous solution comprised of a titanium tetrahalide and sulfuric elevated temperature whereby the titanium tetrahalide and the sulfuric acid react to produce in the first solution a dissolved intermediate product comprising titanyl sulfate and to produce a byproduct hydrogen halide gas; continuing the heating of the first aqueous solution at an elevated temperature and in the presence of a quantity of a previously prepared particulate titanyl sulfate whereby the dissolved titanyl sulfate intermediate is caused to crystallize from the first aqueous solution; separating the crystallized titanyl sulfate intermediate from the first aqueous solution to produce a wet filter cake comprising residual mother liquor and the crystallized titanyl sulfate intermediate; forming a second aqueous solution comprised of the filter cake dissolved in a quantity of an aqueous solvent medium, the quantity being sufficient to effect dissolution of the crystallized titanyl sulfate intermediate contained in the filter cake, but insufficient to effect hydrolysis thereof.

• Assignee: Kerr-McGee Chemical Corp., Oklahoma City, OK (United States)
• Patent Number(s): US 5030439; A
• Application Number: PPN: US 7-422536
• OSTI ID: 5547933
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
AQUEOUS SOLUTIONS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
DISPERSIONS
HALIDES
HALOGEN COMPOUNDS
KINETICS
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
REACTION KINETICS
SOLUTIONS
SULFATES
SULFUR COMPOUNDS
SYNTHESIS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS