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Method for preparing zirconium titanate by oil-water interface process

An oil-water interface method and zirconium titanate technology, which is applied in the field of zirconium titanate preparation, can solve the problems of unfavorable large-scale industrial production, inconvenient operation of hydrothermal method, rapid particle agglomeration, etc., and achieve good application prospects, low price, and repeated good sex effect

Inactive Publication Date: 2015-03-04
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrothermal method is inconvenient to operate, requires a lot of physical operations, and needs to add various additives to make the final product impure, and the sintering temperature is too high (>1500°C)
The raw material cost of the sol-gel method is high, which is not conducive to large-scale industrial production. When heat treatment is performed at high temperature, the particles will be quickly agglomerated, and the reaction time is too long

Method used

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  • Method for preparing zirconium titanate by oil-water interface process
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  • Method for preparing zirconium titanate by oil-water interface process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Weigh 1.5222g of sodium oleate and dissolve it in 10ml of deionized water at 45°C. After the sodium oleate is completely dissolved, add 5ml of 0.5mol / L zirconium oxychloride solution to obtain a precipitate. At the same time, add 0.88ml of tetrabutyl titanate to the system, then add 20ml of cyclohexane to the system, and stir magnetically at room temperature After 2 hours, until the water phase is colorless and transparent, and the oil phase is milky white, transfer to a 100ml high-pressure hydrothermal reaction kettle.

[0026] (2) Weigh 0.5g of sodium hydroxide, dissolve it in 10ml of deionized water, and add it dropwise into the reaction kettle (the volume ratio of oil to water in the system is 1:1).

[0027] (3) The reaction kettle was placed in a blast drying oven, and reacted at 160° C. for 24 hours.

[0028] (4) After the reaction is over, after the high-pressure hydrothermal reactor is naturally cooled to room temperature, wash with absolute ethanol, centri...

Embodiment 2

[0032] (1) Weigh 1.5222g of sodium oleate and dissolve it in 10ml of deionized water at 45°C. After the sodium oleate is completely dissolved, add 5ml of 0.5mol / L zirconium oxychloride solution to obtain a precipitate. At the same time, add 0.88ml of tetrabutyl titanate to the system, then add 20ml of cyclohexane to the system, and stir magnetically at room temperature 3h, until the water phase is colorless and transparent, and the oil phase is milky white, transfer to a 100ml high-pressure hydrothermal reaction kettle.

[0033] (2) Weigh 0.5g of sodium hydroxide, dissolve it in 10ml of deionized water, and add it dropwise into the reaction kettle (the volume ratio of oil to water in the system is 1:1).

[0034] (3) The reaction kettle was placed in a blast drying oven, and reacted at 160° C. for 24 hours.

[0035] (4) After the reaction is over, after the high-pressure hydrothermal reactor is naturally cooled to room temperature, wash with absolute ethanol, centrifuge at 10,...

Embodiment 3

[0039] (1) Weigh 1.5222g of sodium oleate and dissolve it in 10ml of deionized water at 45°C. After the sodium oleate is completely dissolved, add 5ml of 0.5mol / L zirconium oxychloride solution to obtain a precipitate. At the same time, add 0.88ml of tetrabutyl titanate to the system, then add 20ml of cyclohexane to the system, and stir magnetically at room temperature After 2 hours, until the water phase is colorless and transparent, and the oil phase is milky white, transfer to a 100ml high-pressure hydrothermal reaction kettle.

[0040] (2) Weigh 0.5g of sodium hydroxide, dissolve it in 10ml of deionized water, and add it dropwise into the reaction kettle (the volume ratio of oil to water in the system is 1:1).

[0041] (3) The reaction kettle was placed in a blast drying oven, and reacted at 160° C. for 24 hours.

[0042] (4) After the reaction is over, after the high-pressure hydrothermal reactor is naturally cooled to room temperature, wash with absolute ethanol, centri...

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Abstract

The invention relates to a method for preparing zirconium titanate by an oil-water interface process, which comprises the following steps: (1) under room temperature conditions, dropwisely adding a zirconium oxychloride solution and tetrabutyl titanate into a sodium oleate water solution, adding cyclohexane, and stirring to obtain a mixed solution; (2) pouring the mixed solution into a reaction kettle, adding a NaOH solution to regulate the pH value, keeping the oil-water ratio at 1:1, reacting at 160-180 DEG C for 24-18 hours, washing, separating the oil phase, washing, centrifuging, drying to obtain a primary product, and roasting to obtain the zirconium titanate ZrTiO4. The method is simple to operate, and has the characteristics of favorable repetitiveness, controllable reaction conditions, lower temperature requirements and the like.

Description

technical field [0001] The invention belongs to the field of zirconium titanate preparation, in particular to a method for preparing zirconium titanate by an oil-water interface method. Background technique [0002] Zirconia (ZrO 2 ) and titanium oxide (TiO 2 ) synthesized zirconium titanate (ZrTiO 4 ) material is an important electronic ceramic material, which has extremely low dielectric loss, high dielectric constant and quality factor, and good frequency and temperature stability. It is ideal for preparing capacitors, piezoelectric sensors and microwave dielectric resonators preferred material. ZrTiO 4 The material also has good high-temperature performance, and its melting point is about 1900 ° C, so ZrTiO 4 The excellent high temperature resistance of the material can be well used in the field of high temperature structural materials. At the same time, ZrTiO 4 relative to TiO 2 and ZrO 2 The catalytic performance has also been further improved. [0003] At pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/462C04B35/622
Inventor 周兴平施滔滔蔡宇田
Owner DONGHUA UNIV
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