Method for preparing nano titanium dioxide in anatase type from fluid of hydrothermal crystallized titanium sulfate

A nano-anatase and titanium dioxide technology, applied in the direction of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problems of expensive raw materials and achieve the effects of easy raw materials, reduced environmental pollution, and stable performance

Inactive Publication Date: 2003-05-07
SUN YAT SEN UNIV
View PDF1 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 1999, DuPont of the United States applied for the hydrothermal preparation of nano-TiO using special ti

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing nano titanium dioxide in anatase type from fluid of hydrothermal crystallized titanium sulfate
  • Method for preparing nano titanium dioxide in anatase type from fluid of hydrothermal crystallized titanium sulfate
  • Method for preparing nano titanium dioxide in anatase type from fluid of hydrothermal crystallized titanium sulfate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: The titanium liquid was precrystallized by hydrothermal treatment at 100°C and 120°C for 5 hours, washed with water to obtain a precipitate, and the precipitate was calcined at 350°C for 5 hours to obtain crystallized, dispersible, nano-sharp Ilmenite-type titanium dioxide products TiA1, TiB1 ( figure 2 ).

Embodiment 2

[0019] Example 2: The titanium solution was precrystallized by hydrothermal treatment at 100°C and 120°C for 5 hours respectively, and washed with water to obtain precipitate A, which was treated with 1.0ml of 0.2M dilute acetic acid per gram of precipitate for 2 hours and then washed with water , to obtain precipitate B, and then each gram of precipitate was treated with 1.0ml 0.2M ammonia water for 2 hours, washed with water to obtain precipitate C, and then per gram of precipitate was treated with 1.0ml 0.1% polyvinylamide for 2 hours to obtain precipitate D. After precipitation D was washed with water and separated, it was calcined at 800°C for 5 hours to obtain crystallized and dispersible nano anatase titanium dioxide TiA6 and TiB6 ( figure 1 a. image 3 a).

Embodiment 3

[0020] Example 3: The titanium solution was precrystallized by hydrothermal treatment at 100°C and 120°C for 5 hours respectively, and washed with water to obtain precipitate A, which was treated with 1.0ml of 0.2M dilute hydrochloric acid per gram of precipitate for 2 hours and then washed with water , to obtain precipitate B; then washed with water, to obtain precipitate C. After the precipitate C was washed with water and separated, it was calcined at 800°C for 5 hours to obtain crystallized, dispersible, nano anatase titanium dioxide TiA9, TiB9 ( figure 1 b. image 3 b).

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A process for preparing nano anatase-type TiO2 from the solution of titanium sulfate by hydrothermal crystallizing includes such steps as hydrothermal precrystallizing at 80-150 deg.C, and sintering at 350-800 deg.C. Its advantages are high dispersity and stability, low cost and less environmental pollution.

Description

technical field [0001] The invention relates to a new process for preparing nano titanium dioxide by using industrial titanium sulfate solution. Background technique [0002] TiO 2 Commonly known as titanium dioxide, there are mainly two commercial types: rutile type and anatase type. In industry, the sulfuric acid method is mainly used to produce anatase TiO 2 . The main issue affecting the product is that TiO 2 The shape and particle size are difficult to control, and calcination will lead to particle agglomeration, growth and uneven particle size distribution, and it is difficult to prepare nano-sized TiO 2 ; Simultaneously due to high temperature phase change, the phase is difficult to control. The currently reported raw materials for the preparation of nano-TiO2 by hydrothermal method are usually expensive alkoxides, which limits the commercial acceptance. In 1992, the British Titanium Industry (Tioxide Group) announced the prepar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C01B13/18C01B13/36C01G23/047C01G23/053C01G23/08
Inventor 吴明娒吴昊黄爱红林钢
Owner SUN YAT SEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap