Method for preparing monodisperse submicron microsphere of titanium dioxide
A titanium dioxide, sub-micron technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of expensive precursors and solvents, difficulty in scale-up production, environmental pollution, etc., and achieve strong process operability and wide application prospects , low cost effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0030] A preparation method of monodisperse submicron titanium dioxide microspheres, comprising the following steps:
[0031] Heat and dissolve ilmenite with a concentration of 80% sulfuric acid (mass ratio ilmenite: sulfuric acid = 1: 2) to obtain a solid phase deposit, leaching with water, filtering to remove insoluble slag, freezing and recrystallizing, and filtering to remove ferrous sulfate , to obtain titanium liquid; adjust the pH value of titanium liquid to 7 with ammonia water to obtain orthotitanic acid precipitation; get 100 g of the washed and filtered precipitate and disperse it in 55 ml of hydrogen peroxide solution with a mass concentration of 30% to obtain peroxide Titanium aqueous solution; under 0 ℃ of ice-water bath conditions, add 19.2ml, the mass percent concentration is the hydrazine hydrate aqueous solution of 80% to the obtained titanium peroxide aqueous solution, and the obtained mixed solution is aged at 0 ℃ for 72 hours, and the The obtained white em...
Embodiment 2
[0034] A preparation method of monodisperse submicron titanium dioxide microspheres, comprising the following steps:
[0035] Orthotitanic acid precipitate was obtained in the same manner as in Example 1.
[0036] Take 20g of orthotitanic acid precipitate and add 10ml, 30% hydrogen peroxide solution to dissolve; under the condition of ice-water bath at 0°C, add 10ml, 80% mass percent concentration of hydrazine hydrate aqueous solution to the obtained titanium peroxide solution to obtain The mixed solution was aged at 10°C for 24 hours to obtain a white emulsion; the obtained white emulsion was centrifuged at 2500rpm, and the obtained precipitate was sintered at 500°C for 2 hours to obtain monodisperse submicron titanium dioxide particles with a particle size of 200nm. ball.
[0037] Morphological characterization of the titanium dioxide submicron oxide microspheres obtained, the results are shown in figure 2 , it can be seen that titanium dioxide is well dispersed.
Embodiment 3
[0039] A preparation method of monodisperse submicron titanium dioxide microspheres, comprising the following steps:
[0040] Orthotitanic acid precipitate was obtained in the same manner as in Example 1.
[0041] Take 20g of orthotitanic acid precipitate and add 10ml, 30% hydrogen peroxide solution to dissolve; under the condition of ice-water bath at 0°C, add 10ml, 80% mass percent concentration of hydrazine hydrate aqueous solution to the obtained titanium peroxide solution to obtain The mixed solution was aged at 20°C for 12 hours to obtain a white emulsion; the obtained white emulsion was centrifuged at 2500rpm, and the obtained precipitate was sintered at 500°C for 2 hours to obtain monodisperse submicron titanium dioxide particles with a particle size of 100nm. ball.
[0042] Morphological characterization of the titanium dioxide submicron oxide microspheres obtained, the results are shown in image 3 , it can be seen that titanium dioxide is well dispersed; carry out...
PUM
Property | Measurement | Unit |
---|---|---|
particle diameter | aaaaa | aaaaa |
particle diameter | aaaaa | aaaaa |
particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com