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Nano titanic oxide impregnation preparation method using shell powder as carrier

A technology of nano-titanium dioxide and shell powder, which is applied in the field of nano-materials, can solve the problems of reducing the catalytic activity of TiO, poor adhesion of titanium dioxide, and limiting wide application, etc., and achieve good regeneration performance, strong binding force and small gas resistance.

Inactive Publication Date: 2009-01-28
GUANGDONG OCEAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the glass surface is flat and smooth, and its adhesion to titanium dioxide is poor, which limits its wide application.
Metal carriers are generally expensive, and metal ions such as Cu 2+ 、Cr 3+ Plasma enters TiO during heat treatment 2 layer, destroying the TiO 2 lattice, reduced TiO 2 Catalytic activity, and the metal surface is also like the glass surface, its adsorption is poor, and it is difficult to load

Method used

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  • Nano titanic oxide impregnation preparation method using shell powder as carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] At room temperature, add 1ml of tetrabutyl titanate dropwise to 100ml of anhydrous methanol, stir for 15min, take 10g of activated shell powder carrier and soak it in the solution, adjust pH=8 with ethanolamine solution, stir for 1h, let it stand for 10h, pour Remove the supernatant, dry at 110°C, and rinse with distilled water repeatedly to remove loosely bound TiO 2 , and then dried at 80°C, roasted at 400°C in a horse heart furnace, controlled the heating rate of 2K / min, raised to 250°C, kept at a constant temperature, then raised to 400°C, and kept at a constant temperature to obtain immobilized shell powder Nano TiO 2 , and finally cooled down to room temperature for use. Multiple impregnations can be performed to increase the loading capacity.

Embodiment 2

[0028] At room temperature, add 15ml of tetrabutyl titanate dropwise to 100ml of cyclohexane, stir for 20min, take 20g of activated shell powder carrier and soak it in the solution, adjust the pH to 10 with ethanolamine solution, stir for 1.5h, and let stand for 12h. Pour off the supernatant, dry at 120°C, rinse with distilled water repeatedly to remove loosely bound TiO 2 , and then dried at 100°C, roasted at 420°C in a horse heart furnace, controlled the heating rate of 4K / min, raised to 280°C, kept at a constant temperature, then raised to 500°C, and kept at a constant temperature to obtain immobilized shell powder Nano TiO 2 , and finally cooled down to room temperature for use. Multiple impregnations can be performed to increase the loading capacity.

Embodiment 3

[0030] At room temperature, add 20ml of tetrabutyl titanate dropwise to 100ml of acetylacetone, stir for 20min, take 15g of activated shell powder carrier and soak in the solution, adjust the pH to 11 with the ethanolamine solution, stir for 2h, let stand for 15h, pour Clear liquid, dried at 130°C, rinsed repeatedly with distilled water to remove loosely bound TiO 2, and then dried at 90°C, roasted at 450°C in a horse heart furnace, controlled the heating rate of 5K / min, raised to 300°C, kept at a constant temperature, then raised to 450°C, and kept at a constant temperature to obtain immobilized shell powder Nano TiO 2 , and finally cooled down to room temperature for use. Multiple impregnations can be performed to increase the loading capacity.

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Abstract

The invention discloses an impregnation preparation method of nanometer titanium oxide which takes shell powder as a carrier, and in particular relates to a reproducible porous nanometer titanium oxide powder which takes the shell powder as the carrier and the preparation method thereof. In the method, titanium oxide is loaded on a shell powder carrier by impregnation; firstly, alkoxide solution of titanium ester or titanium with appropriate concentration is prepared, then an activated shell powder carrier with certain proportion is impregnated in the alkoxide solution, then the obtained solution is stirred and stayed for a certain time, and treated by low temperature and abstersion pretreatment and finally roasted at high temperature, so the nanometer TiO2 forms high-strength bond with the shell powder and promotes the catalytic activity of the nanometer TiO2 at the same time. Impregnation can be conducted for a plurality of times to increase load. The nanometer TiO2 is characterized by small particle size, good compatibility with materials, high catalytic efficiency, good stability, good regenerability, and the like, and can be applied to the fields of plastics, rubbers, fibers, coatings, home electronic appliances, paints, ceramics, water and environmental manipulation, pharmaceutical and hygienic articles, etc. In terms of sources of raw materials and production technology, the preparation method not only reduces the production cost of the nanometer TiO2 catalyst but also is helpful for disposal of the increasingly serious environmental problems, thus bearing great environmental protection significance.

Description

Technical field: [0001] The invention relates to nano-titanium dioxide and a preparation method thereof, in particular to a reproducible porous nano-titanium dioxide powder with shell powder as a carrier and a preparation method thereof, belonging to the technical field of nanometer materials. Background technique: [0002] With the excessive utilization of resources and serious pollution of nature, the ecological environment has suffered serious damage. There is an urgent need to develop functionally conscious materials that can cost-effectively utilize energy and have no pollution to the environment. Nano-TiO 2 It is this kind of green material with the function of purifying the environment, which can complete many functions such as environmental purification, energy regeneration, energy storage, and non-polluting the environment. Nano-TiO 2 It can be prepared by a variety of techniques and is becoming more and more mature, but there are still common problems such as co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J32/00B01J37/02
Inventor 李泳张兆霞宋文东
Owner GUANGDONG OCEAN UNIVERSITY
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