Method for preparing high activity titanium dioxide sol using industrial metatitanic acid as material

A technology of titanium dioxide and metatitanic acid, applied in the direction of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problems of high price and serious pollution, and achieve low price, wide source and strong adhesion Effect

Inactive Publication Date: 2006-05-10
JINAN KAIYE TIANQI BIOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these organic and inorganic titanium raw materials are raw material products obtained from secondary or even tertiary processing of

Method used

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  • Method for preparing high activity titanium dioxide sol using industrial metatitanic acid as material
  • Method for preparing high activity titanium dioxide sol using industrial metatitanic acid as material
  • Method for preparing high activity titanium dioxide sol using industrial metatitanic acid as material

Examples

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example 1

[0039] Example 1. Prepare high-purity titanium dioxide sol with industrial metatitanic acid (provided by Panzhihua Iron and Steel Plant, the same below) as raw material

[0040] Weigh 100g of industrial metatitanic acid as it is, add water and mix evenly, add excess ammonia water dropwise to adjust the pH to above 8, heat and stir at below 40°C for 3 hours, then repeatedly filter and wash until there is no sulfate ion (use 0.5M barium chloride solution Titration detection); beat the washed filter cake again, then drop excess ammonia water to adjust the pH to above 8, heat and stir at below 40°C for 2 hours, then repeatedly filter and wash until no sulfate ion is detected (with 0.5M chloride barium solution titration detection), and then repeatedly washed with distilled water to neutrality, so that the impurity ions can be basically removed, and finally the slurry is mixed with water and beaten, then the slurry is mixed with water, and 200ml of 10% Nitric acid solution, so that...

example 2

[0041] Example 2. Prepare cerium-doped titania sol with industrial metatitanic acid as raw material

[0042] Weigh 90g of industrial metatitanic acid as it is, add water to make a slurry and mix evenly, take 2.3g of cerium nitrate to dissolve, then add it to the metatitanic acid slurry and mix evenly; add excess ammonia water to adjust the pH to above 9, heat and stir at below 40°C for 3 hours , and then repeatedly filter and wash until there is no sulfate ion (detected by titration with 0.5M barium chloride solution); beat the washed filter cake again, then add excess ammonia water dropwise to adjust the pH to above 8, and heat and stir at below 40°C for 2 hours , then repeatedly filtered and washed until no sulfate ions are detected (detected by titration with 0.5M barium chloride solution), and then repeatedly washed with distilled water until neutral, so that the impurity ions can be basically removed. Finally, the slurry is mixed with water and beaten. Then mix the slurr...

example 3

[0043] Example 3. Prepare lanthanum-doped titania sol with industrial metatitanic acid as raw material

[0044] Weigh 110g of industrial metatitanic acid as it is, add water to beat and mix evenly, take 2.7g of lanthanum nitrate to dissolve, then add to the metatitanic acid slurry and mix evenly; add excess sodium hydroxide solution dropwise to adjust the pH to above 10, and heat below 40°C Stir for 2 hours, then repeatedly filter and wash until there is no sulfate ion (detected by titration with 0.5M barium chloride solution); then add excess sodium hydroxide solution dropwise to adjust the pH to above 9, heat and stir at below 40°C for 2 hours, and then Repeatedly filter and wash...and repeat until no sulfate ion is detected after adding sodium hydroxide solution for washing (detected by titration with 0.5M barium chloride solution), and then repeatedly wash with distilled water until neutral, so that the impurity ions can be removed Basically remove it. Finally, the slurry...

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Abstract

The invention discloses a method for preparation of high-activity titanium oxide sol with industrial metatitanic acid as raw material, which is characterized in that it contains sequentially the following steps: (1) adding alkali to wash out sulfate ion, (2) adding acid to peptize, (3) proceeding dispergation with (a), (b) or (c) mode; when preparing transient metal or rare-earth metal loading-type (doping) sol, firstly preparing quantitative transient metal salt or rare-earth salt solution and adding into the metatitanic acid slurry without washing with alkali, then filtering and washing out to no sulfate ion; and when preparing noble metal-doping sol, adding noble-metal salt solution into the prepared pure sol, and placing under the irradiation of ultraviolet light for 0.5-10 hours and mixing at the same time. The merit of the invention is characterized in that: the raw material is cheap, the pollution is little, the dispersion degree and crystallization degree of prepared sol is good, and the visible light activity is highly improved by doping technique; and the sol property is improved by the microwave and supersonic after-treatment technique. The grain diameter of sol is very small, belonging to nanometer material.

Description

technical field [0001] The invention relates to a method for preparing high-activity titanium dioxide sol by using industrial metatitanic acid as a raw material, and belongs to the field of nanometer material preparation. Background technique [0002] my country's titanium reserves rank first in the world, accounting for more than 35% of the world's total, and more than 90% are concentrated in Panzhihua. However, the current utilization rate of titanium is less than 5%, which is basically used in the production of titanium dioxide, and the proportion of application in the environment is extremely small . [0003] Titanium dioxide has become the most widely used semiconductor material in the field of photocatalysis at home and abroad in recent years because of its high photocatalytic activity, corrosion resistance, stable properties, and non-toxicity. According to the predictions of authoritative organizations such as Japan, South Korea, Europe and the United States, the curr...

Claims

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Application Information

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IPC IPC(8): C01G23/08
CPCB01J21/063B01J23/10B01J23/50B01J23/745B01J35/004B01J37/033B01J37/036C01G23/00C01G23/053C01G23/0532C01P2002/72C01P2002/84C01P2004/03C01P2006/80H01L2924/0002H01L2924/00
Inventor 李芳柏刘同旭
Owner JINAN KAIYE TIANQI BIOLOGICAL TECH CO LTD
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