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Method for preparing potassium titanate

A technology of potassium titanate and titanium precursors, applied in the direction of titanate, alkali metal titanate, chemical instruments and methods, etc., can solve problems such as high production costs, achieve cost saving, reduce reaction time and reaction temperature, The effect of improving economic efficiency and productivity

Active Publication Date: 2019-06-04
LG CHEM LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although K 2 Ti 6 o 13 Whiskers are one of several whiskers that have been used with some success in commercial use, but high production costs are a limitation of K 2 Ti 6 o 13 Important main reasons for the mass production and coverage of whiskers

Method used

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  • Method for preparing potassium titanate
  • Method for preparing potassium titanate
  • Method for preparing potassium titanate

Examples

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preparation example Construction

[0041] In the following, reference will be made to figure 2 The flow chart shown in describes in detail the various steps of the preparation method of potassium titanate according to one embodiment of the present invention.

[0042] step 1)

[0043] Step 1) according to one embodiment of the present invention is characterized in that a mixed solution comprising a titanium precursor and a potassium precursor is prepared.

[0044]The present invention is characterized in that potassium titanate is produced by producing high-purity nano-sized potassium titanate excellent in economic efficiency and productivity using a hydrothermal method.

[0045] Specifically, the hydrothermal method of the present invention is a method for synthesizing potassium titanate by utilizing the nucleation of precursors and the growth of crystals under supercritical conditions, wherein the reaction rate is fast at low temperatures, the dispersibility of particles is good, and the particle size , s...

Embodiment 1

[0072] 1) The anatase phase TiO 2(Titanium(IV) oxide, anatase, 99.8%, SIGMA-ALDRICH) and potassium hydroxide (KOH, 85%, DEAJUNG) were mixed in distilled water (D.I water) at a molar ratio of 1:600 ​​and stirred, 2) Heat treatment at 240° C. for 4 hours, and 3) washing and drying to prepare potassium titanate whiskers.

Embodiment 2

[0074] 1) The anatase phase TiO 2 and KOH were mixed in distilled water (D.I water) at a molar ratio of 1:600 ​​and stirred, 2) heat-treated at 210° C. for 4 hours, and 3) washed and dried to prepare potassium titanate whiskers.

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Abstract

The present invention relates to a method for preparing potassium titanate. The present invention provides a method for preparing potassium titanate, the method being capable of: improving economic feasibility and productivity by simplifying a process through hydrothermal synthesis using anatase-phase titanium dioxide as a titanium precursor; and preparing high-purity nano-sized potassium titanatewhiskers having a uniform shape by controlling the reaction temperature, the reaction time, and the molar ratio of precursors.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2017-0066607 filed with the Korean Intellectual Property Office on May 30, 2017, the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] The invention relates to a preparation method of potassium titanate. The preparation method uses anatase phase titanium dioxide as a titanium precursor and synthesizes potassium titanate through a hydrothermal method. Background technique [0004] Potassium titanate whiskers, especially due to their own tunnel structure, not only have excellent mechanical properties, but also have very unique physicochemical properties. As examples of such properties, there are high infrared reflectivity, low thermal conductivity, high heat resistance, high abrasion resistance, high electrical insulation, low dielectric constant, chemical stability, and the like. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/00
CPCC01P2002/30C01P2002/72C01P2004/03C01P2004/17C01P2004/54C01P2004/62C01G23/005C01P2004/10C01P2006/32
Inventor 金钟勋李悌均裴东植崔妍斌
Owner LG CHEM LTD
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