Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of rectangular tubular calcium titanate microparticles

A technology of micron particles and calcium titanate, which is applied in the direction of titanate, alkaline earth metal titanate, chemical instruments and methods, etc., can solve the problems of long time consumption and high temperature, and achieve low cost, easy control, and no environment pollution effect

Inactive Publication Date: 2019-05-31
ZHEJIANG UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the high-temperature solid-phase method and the sol-gel method both have the disadvantages of requiring high temperature, taking a long time, and easily introducing impurities.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of rectangular tubular calcium titanate microparticles
  • A kind of preparation method of rectangular tubular calcium titanate microparticles
  • A kind of preparation method of rectangular tubular calcium titanate microparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1) Dissolve 6 mmol of tetrabutyl titanate in 60 ml of absolute ethanol, stir for 10 min to make it uniform, drip deionized water with a dropper to obtain a white precipitate, filter and wash to obtain titanium hydroxide.

[0037] 2) Disperse titanium hydroxide in deionized water, add 17.92g KOH, stir for 10min to make it uniform, add deionized water to make the volume to 40ml, and the concentration of KOH at this time is 8mol / L. The suspension was transferred into a 50ml polytetrafluoroethylene reactor for hydrothermal reaction at 200°C for 16 hours, and potassium titanate was obtained after cooling and washing. The intermediate product potassium titanate had a fibrous shape.

[0038] 3) Disperse the obtained potassium titanate in deionized water, add 1.42g calcium nitrate tetrahydrate and 1.12g KOH in sequence, stir for 10min, add deionized water to make the volume to 40ml, and the concentration ratio of Ca and Ti is 1: 1. The concentration of KOH is 0.50mol / L. The su...

Embodiment 2～3

[0041] Prepare according to the method of Example 1, the difference is that, in the process of preparing calcium titanate in step 3), the concentration of KOH after being set to 40mL in turn is set to be 0.25mol / L, 1.0mol / L, and the rest Conditions remain the same. The morphology of the products of Examples 2 and 3 are rectangular tubes with concave ends. The SEM figure of embodiment 2,3 is respectively as image 3 , 4 shown.

Embodiment 4

[0043] Prepare according to the method of Example 1, the difference is that in the process of preparing potassium titanate in step 1), the amount of tetrabutyl titanate added is set to 10 mmol, and in the process of preparing calcium titanate, tetrabutyl titanate is added. After hydrating calcium nitrate, the ratio of Ca to Ti is still 1:1, and other conditions remain unchanged. The product morphology of embodiment 4 is a rectangular tube shape, and both ends are sunken, and the SEM figure of embodiment 4 is as follows Figure 5 shown.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of rectangular tubular calcium titanate micro-particles. The preparation method includes the steps: 1) dissolving tetrabutyl titanate in ethyl alcohol, adding water to obtain white precipitates; 2) dispersing white precipitates into water, adding KOH, performing hydrothermal reaction, and post-treating mixture to obtain potassium titanate; 3) dispersing the potassium titanate into water, adding calcium nitrate and KOH, performing hydrothermal reaction, and post-treating mixture to obtain the rectangular tubular calcium titanate, and enabling two ends of the rectangular tubular calcium titanate to recess. The molar concentration of the KOH in a reaction system is 0.1-1mol / L. The preparation method is simple in process, easy to control and free from environmental pollution and low in cost, high-temperature calcination is omitted, and mass production is easily achieved.

Description

technical field [0001] The invention relates to the field of inorganic material synthesis, in particular to a method for preparing rectangular tubular calcium titanate micron particles. Background technique [0002] Perovskite oxides are a new class of inorganic materials with unique physical and chemical properties, and their general molecular formula is ABO 3 , has been widely used in optics, gas sensing, catalysis, biology and other fields. [0003] Calcium titanate (CaTiO 3 ) is a typical representative of perovskite compounds, with good crystal structure stability and thermal stability, and good dielectric properties and catalytic properties, has been used in the manufacture of capacitors, photocatalytic hydrogen production, photocatalytic degradation of organic matter, It is one of the hot materials currently concerned. [0004] At present, the methods for preparing calcium titanate powder mainly include high-temperature solid-phase method, sol-gel method, and hydro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/00
CPCC01G23/006C01P2004/38C01P2004/54C01P2004/61C01P2004/62
Inventor 徐刚陈同舟孟宪谦江婉皇甫统帅沈鸽韩高荣
Owner ZHEJIANG UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com