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Method for fast preparing lamellate potassium titanate

A kind of potassium titanate, layered technology, applied in the field of preparing layered potassium titanate

Inactive Publication Date: 2008-07-09
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Utilize potassium stearate to prepare the method for layered potassium titanate salt has not yet been reported

Method used

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  • Method for fast preparing lamellate potassium titanate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Step 1 Melt and mix, take the reactant of potassium stearate and butyl titanate with a potassium-titanium molar ratio of 1:2: 16.13g potassium stearate and 34.03g butyl titanate; add butyl titanate to the molten state In the potassium stearate, add 60g of stearic acid as a solvent to ensure uniform mixing, and the heating and stirring time is 0.5h; if the reactant exceeds 200g, do not add stearic acid solvent.

[0019] Step 2 Combustion in an electric furnace, put the mixture obtained in step 1 into a beaker, place it on an electric furnace with a power of 1kW, heat it to the ignition point, and burn for 2h.

[0020] Step 3: Roasting. The electric furnace combustion product in step 2 is fully ground, put into a muffle furnace, and heated to 750°C at a heating rate of 15°C / min for roasting to obtain layered potassium titanate.

[0021] The resulting layered potassium titanate has the molecular formula K 2 Ti 4 o 9 .

Embodiment 2

[0023] Step 1 Melt and mix, the reactant of potassium stearate and butyl titanate with a potassium-titanium molar ratio of 1:2: 16.13g potassium stearate and 34.03g butyl titanate; add butyl titanate to the molten state In the potassium stearate, add 60g of stearic acid as a solvent to ensure uniform mixing, and the heating and stirring time is 0.5h; if the reactant exceeds 200g, do not add stearic acid solvent.

[0024] Step 2 Combustion in an electric furnace, put the mixture obtained in step 1 into a beaker, place it on an electric furnace with a power of 1kW, heat it to the ignition point, and burn for 2h.

[0025] Step 3 roasting, fully grind the electric furnace combustion product in step 2, put it into a muffle furnace, heat it to 800 °C at a heating rate of 15 °C / min and roast for 2.5 hours to obtain layered potassium titanate.

[0026] The resulting layered potassium titanate has the molecular formula K 2 Ti 4 o 9 .

Embodiment 3

[0028] Step 1 Melt and mix, the reactant of potassium stearate and butyl titanate with a potassium-titanium molar ratio of 1:2: 170.15 g of butyl titanate is added to 80.65 g; butyl titanate is added to the molten stearin Potassium acid, the heating and stirring time is 0.5h.

[0029] Step 2 Combustion in an electric furnace, put the mixture obtained in step 1 into a beaker, place it on an electric furnace with a power of 1kW, heat it to the ignition point, and burn for 2h;

[0030] Step 3 roasting, fully grind the electric furnace combustion product in step 2, put it into a muffle furnace, heat it to 800 °C at a heating rate of 15 °C / min and roast for 2.5 hours to obtain layered potassium titanate.

[0031] The resulting layered potassium titanate has the molecular formula K 2 Ti 4 o 9 .

[0032] Fig. 1 is the X-ray diffraction pattern of the product obtained by this method at the calcination temperature of 750°C and 800°C. It can be clearly seen that no other intermedia...

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Abstract

The invention discloses a process for fast preparing layered potassium titanate salt, belonging to the technical field of nanometer material preparation. The step 1 of the method is molten mixing, selecting reactant of potassium stearate and butyl titanate potassium titanium mole ratio of which is 1:2, adding butyl titanate into molten potassium stearate to blend and the heating and stirring time is 0.5 hour, step 2 is electric furnace combustion, placing the mixture obtained in step 1 into a bunsen beaker, displaying the bunsen beaker on the electric furnace to combust for 2 hours to the burning point, step 3 is sintering, sufficiently abrading the burned product of the electric furnace in step 2, placing in a muffle furnace and heating to 750-800 DEG C at the warming-up speed of 15 DEG C / min and then sintering to obtain layered potassium titanate salt K2Ti4O9. The method not only simplifies the reacting process, shortens the reacting time, but also secures the purity of the product.

Description

technical field [0001] The invention relates to a method for preparing layered potassium titanate, which belongs to the field of nanometer material preparation. Background technique [0002] Nano-TiO 2 Thin films have been valued for their wide range of applications in optics and photochemistry. Preparation of Nano TiO 2 Thin film methods generally involve the hydrolysis of titanium salts and the TiO 2 Preparation and coating process of nano-sol, because it is difficult to control nano-TiO 2 The shape and size of the particles, so high-quality nanofilms cannot be obtained. After acid exchange and exfoliation, the layered titanate can form a special state of TiO 2 nanochip. Assembling exfoliated monolithic layers onto substrates allows facile fabrication of structurally tunable multilayer TiO 2 nanofilm, which makes nano-TiO 2 The application prospects of thin films in electronic components are even broader. [0003] The preparation method of layered potassium titana...

Claims

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Application Information

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IPC IPC(8): C01G23/00
Inventor 颜鲁婷王鹏吴洪鹏
Owner BEIJING JIAOTONG UNIV
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