Method for preparing nano-tubular sodium titanate/titanci acid

A technology of nanotubes and sodium titanate, which is applied in the field of sodium titanate and titanic acid, can solve the problems of difficult high temperature and high pressure conditions, restrictions on industrial production, long reaction time, etc., and achieve good ion exchange performance, good economic benefits and social benefits. Efficiency, the effect of short reaction time

Active Publication Date: 2008-04-30
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional nanotube sodium titanate / titanic acid preparation methods include template method, sintering method, hydrothermal method, low temperature reflux method, etc. Among them: the product obtained by sintering method is thick and short, with small aspect ratio and requires high temperature ; Although the product performance obtained by the hydrothermal method is excellent, the high temperature and high pressure conditions required by it are difficult to achieve; the low temperature reflux method overcomes the above-mentioned shortcomings, and the product performance is also good, but the reaction time is too long, which restricts industrial production

Method used

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  • Method for preparing nano-tubular sodium titanate/titanci acid
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  • Method for preparing nano-tubular sodium titanate/titanci acid

Examples

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Embodiment 1

[0018] Example 1. Take 5g TiO 2 (Anatase titanium dioxide powder produced by Zhoushan Mingri Chemical Plant), slowly add 100ml of 40% (weight percentage concentration) NaOH solution in a polytetrafluoroethylene container, place it in a microwave oven, set to medium and low heat (750W , Work for 10s, stop for 12s) Stir with a mechanical stirrer, and add a reflux condenser, react for 6 hours, cool and settle, pour out the supernatant, wash with distilled water to pH 6.0-8.0, filter, dry, and get nano The sodium titanate product is tubed, and then soaked in 0.1M hydrochloric acid for 8 hours, filtered, washed, and dried to obtain the nanotube titanic acid product.

Embodiment 2

[0019] Example 2. Take 5g of metatitanic acid slurry with 50% water content, slowly add it to a polytetrafluoroethylene container containing 100ml of 40% (weight fraction) NaOH solution, place it in a microwave oven, and set it to medium-low Fire (same as above), stir with a mechanical stirrer, and add a reflux condenser, react for 6 hours, cool and settle, pour out the supernatant, wash with distilled water to pH 6.0-8.0, filter and dry to obtain nanotube titanium The sodium product is then soaked in 0.1M hydrochloric acid for 8 hours, filtered, washed, and dried to obtain the nanotube titanic acid product.

Embodiment 3

[0020] Example 3: Take reagent grade TiO 2 1g, slowly add 100ml of 40% (weight fraction) NaOH solution in a polytetrafluoroethylene container, place in a microwave oven, set to medium heat (750W, work for 12s, stop for 10s), stir with a mechanical stirrer , And add a reflux condenser, react for 6 hours, cool and settle, pour out the supernatant, wash with distilled water to pH 6.0-8.0, filter, and dry to obtain nanotube sodium titanate product, and then use 0.1M hydrochloric acid Soak for 8 hours, filter, wash and dry to obtain nanotube titanic acid product.

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Abstract

A method for preparing nano pipe sodium titanate / metatitanic acid, comprising the following steps: (1) mixing the compound containing titanium with the strong alkaline solution with the wight proportion being 20-80%; (2) heating and backflowing in the microwave oven for 10 minitues-20 hours; (3) cooling and depositing the reacted mixing liquid, washing the deposite to make the pH be 6-8, separating and getting the nano pipe sodium titanate, immersing the product got in the above reaction in strong acid for 3-72 hours, washing, drying and getting the nano pipe metatitanic acid. The invention is characterized by the temperated reacting condition, fast reaction velocity, high performance and cost ratio of the product and being suited to produced industrially.

Description

Technical field [0001] The invention relates to a method for preparing sodium titanate and titanic acid with a nano tubular structure by using microwave radiation as a heating source. Background technique [0002] Nanotube sodium titanate / titanic acid has excellent optical and electrical properties, certain mechanical properties and large specific surface area, especially high visible light response, good fluorescence effect and enhanced electroluminescence performance, With ion exchange properties, it can be widely used in catalysts or catalyst carriers, solar cells, sensor devices, optical devices; additives for ceramics, paints, textiles, and plastics, and other titanate nanotubes prepared by ion exchange; As a recovery agent for silver ions; it can also be used as a chromatographic support for the analysis of lower alkanes. Traditional nanotube sodium titanate / titanic acid preparation methods include template method, sintering method, hydrothermal method, low temperature refl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/00C01D13/00
Inventor 张经纬王延安刘会娟杨建军金振声吴志申张治军
Owner HENAN UNIVERSITY
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