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Manufacture of titanium dioxide structures

A technology of titanium dioxide and titanic acid, applied in the field of forming titanium compound structure, to achieve the effect of fast kinetics, large specific surface area, and low possibility of coagulation

Pending Publication Date: 2021-10-08
蒂奥泰克公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A problem in the prior art is to stabilize particles within a certain pH range and also allow aggregation into structures under economically realistic conditions

Method used

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  • Manufacture of titanium dioxide structures
  • Manufacture of titanium dioxide structures
  • Manufacture of titanium dioxide structures

Examples

Experimental program
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Effect test

example

[0283] The invention is further described by the following examples.

example 1

[0284] Example 1. According to step a) and step b), by mixing 2.5 parts of titanic acid suspended in water with 1 part of TiOCl 2 Solution (22wt%-24wt% TiO 2 , the density is 1.5-1.6g.cm -3 ) mixed to obtain a clear solution (step a)) and before raising the temperature to 80°C and holding for 75 minutes (step b)) and subsequent rapid cooling, with 10:1 TiO 2 : mass ratio of citric acid Add citric acid as stabilizer to prepare acidic 10wt% TiO with pH2 Dispersions. The pH of the titanic acid suspended in water is 5.5, and before step a) by adding 2 parts of the TiOCl 2 The solution was prepared by mixing 1 part of water and 8.8 parts of 10% NaOH keeping the temperature in the range of 25°C - 40°C. In this example, two masses of TiOCl used to prepare titanic acid suspended in water form a clear solution 2 Mass of Ti in aqueous solution and TiOCl mixed with titanic acid in step a) 2 The mass ratio of Ti in the aqueous solution was 3:7.

[0285] After step b), the ion and w...

example 2

[0286] Example 2. Before step c), by taking the 20 wt% acidic sol of Example 1 at pH 1 to 1.5, and adding citric acid, KOH and monoethanolamine (MEA) under stirring, a TiO with 15 wt% at pH 8.5-9.0 was prepared 2 alkaline sol. To 6.1 parts of the acidic sol was added the following - 1 part of an alkaline solution consisting of 1.8 parts of water, 1.8 parts of potassium KOH (49 wt%) and 1.0 parts of citric acid. MEA was added such that the final mass of the final alkaline sol had a mass ratio of citric acid:MEA of 2.1:1.

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Abstract

The present invention relates to a method for manufacturing a structure of a titanium compound selected from the group consisting of sheets, wires and tubes. The present invention also relates to intermediate products and structures comprising titanium dioxide obtainable by the method. The invention provides an improved method giving improved yield as well as other advantages.

Description

technical field [0001] The present invention relates to a method for forming titanium compound structures, including structures selected from the group consisting of tubes, sheets and / or wires. The invention further relates to intermediate dispersions comprising titanium dioxide particles and intermediate sols comprising titanium dioxide particles, as well as structures comprising titanium dioxide in the form of tubes, sheets or wires. Background technique [0002] One-dimensional (1D) nanomaterials have been studied for a long time. Among metal oxides, 1D titania nanostructures such as nanotubes, nanowires, and nanofibers have been investigated for applications such as pollutant absorption and catalysis, photocatalysis, Na and Li ion batteries, solar cells, sensors, and sensing technologies. application. TiO nanotubes have high surface area and high ion exchange capacity, which makes them more suitable for cationic substitution in various applications. TiO 2 (B) is the ...

Claims

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Application Information

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IPC IPC(8): C01G23/00A61L27/06B01J21/06C01G23/053
CPCC01G23/003C01G23/001C01G23/005C01G23/0536C01P2002/85C01P2002/72C01P2002/74C01P2002/82C01P2004/03C01P2004/04C01P2004/20C01P2004/24C01P2004/51C01P2004/64C01P2004/13C01P2004/16C01P2004/17C01P2006/16C01P2006/17C01P2006/12C01P2006/40B01J21/063A61L27/06A61L2430/02A61L2430/12A61L2400/18Y02E60/10B01J35/39B01J35/615H01M4/485H01M10/0525B82Y30/00B82Y40/00C01G23/08
Inventor 罗伯特·考克利安德烈亚斯·韦斯特门安德斯·泰格兰赫约尔迪斯·斯科奥尔安德烈·马塞尔·比安费
Owner 蒂奥泰克公司
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