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A kind of method for preparing superfine titanium suboxide powder

A technology of titanium dioxide and titanium dioxide, which is applied in the field of preparation of ultra-fine titanium dioxide powder, can solve the problems of uncontrolled, prone to agglomeration particle size, and adverse effects of dispersibility on reaction time and reaction uniformity, and achieve powder particle size Controlled, difficult to prepare, increased purity and dispersibility effects

Active Publication Date: 2016-03-23
CHANGSHA WORUI NEW MATERIAL TECH
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Problems solved by technology

In the existing preparation scheme of titanium dioxide powder, the direct contact of the raw material powder is prone to agglomeration at high temperature and the particle size is not controlled. The dispersion of reactant components and reducing agent in the raw material is unfavorable to the reaction time and reaction uniformity. influences

Method used

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Embodiment Construction

[0017] The present invention is further described in detail below.

[0018] A method for preparing superfine titanium suboxide powder, the steps are as follows:

[0019] A. According to TiO 2 +TiH 2 →xTi 4 o 7 +yTi 5 o 9 (x+y=1) reflect the equation for calculation, respectively weigh titanium dioxide powder and titanium hydride powder on the electronic balance, so that the mass ratio of the weighed titanium dioxide powder and titanium hydride powder is 39:5, and the powder particle size requirement is 1- 10μm;

[0020] B. The above-mentioned titanium dioxide powder and titanium hydride powder were dropped into supersaturated KCl and NaCl aqueous solutions respectively, and stirred for 10 minutes with a stirrer to obtain KCl and NaCl aqueous suspensions containing titanium dioxide powder and titanium hydride powder respectively;

[0021] C. Filter the above mixed solution with a 3-5um filter paper, and then dry it in a constant temperature drying oven at 100°C in an air...

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Abstract

The invention relates to a preparation method of ultra-fine titanium suboxide powder. The preparation method comprises the following steps: A. weighing titanium dioxide powder and titanium hydride powder in proportion; B. respectively adding into supersaturated KCl and NaCl aqueous solutions, and stirring for dispersion; C. respectively filtering and drying the mixtures; D. carrying out high-temperature dehydrogenation treatment on the titanium hydride powder coated with KCl and NaCl, and then sufficiently and evenly mixing with the titanium dioxide powder coated with KCl and NaCl, as well as KCl and NaCl powder; E. heating the evenly mixed powder in vacuum, and then cooling in a furnace; F. washing with water to obtain the ultra-fine titanium suboxide powder. The preparation method provided by the invention solves the problem that ultra-fine titanium powder is different to prepare, meanwhile increases the purity and dispersibility of the titanium powder, and improves the production efficiency, and the controllability of powder particle size is good.

Description

technical field [0001] The invention relates to a preparation method of ultrafine titanium suboxide powder. Background technique [0002] with TinO 2 Titanium oxide with the general chemical formula n-1 has unique physical, chemical and electrochemical properties, including excellent electrical conductivity, which is 1500S / cm, much higher than graphite; extremely strong chemical stability, strong acid and alkali resistance ; Wide electrochemical stable potential window, the stable standard window in aqueous solution is above 3.0V, which makes it have broad application prospects in various chemical power sources, including lead storage batteries, liquid flow batteries, and fuel cells. where Ti 4 o 7 , Ti 5 o 9 It has the best electrical conductivity and is an ideal material for battery additives. [0003] Titanium oxide is titanium dioxide with oxygen defects. The existing preparation method can mainly be obtained by heating TiO2 under an inert atmosphere. 2 It can als...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/04
Inventor 吴宏刘锋刘志斌
Owner CHANGSHA WORUI NEW MATERIAL TECH
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