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Solid phase preparation method of porous calcium titanate micro-nano particle spheres

A technology of micro-nano particles and solid-phase preparation, which is applied in the direction of titanate, alkaline earth metal titanate, chemical instruments and methods, etc., can solve the problem of few porous calcium titanate micro-nano spheres, and achieve convenient manipulation and application , Uniform shape and high yield

Active Publication Date: 2016-12-21
淮安新能源材料技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, people have successfully synthesized calcium titanate micro-nanospheres by hydrothermal, solvothermal and other methods, but there are few studies on the one-step synthesis of porous calcium titanate micro-nanospheres by solid phase.

Method used

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  • Solid phase preparation method of porous calcium titanate micro-nano particle spheres

Examples

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Effect test

example 1

[0025] (1) Add 30mL of isopropanol and 5mL of dimethylformamide to a 50mL reaction flask in sequence, then add 0.6g of n-butyl titanate, and stir for 5min; The temperature of the system was raised to 140°C and maintained for 48 hours; after the thermal reaction was completed, the autoclave was allowed to cool down to room temperature naturally;

[0026] (2) The product obtained in step (1) was suction filtered, precipitated, and washed three times with absolute ethanol to obtain a precursor of porous dititanic acid submicron particle balls with a white hierarchical structure;

[0027] (3) Put 20g of calcium carbonate into a high-energy ball mill, and use three kinds of mixed beads with different particle sizes (Φ0.3mm:Φ0.6mm:Φ0.9mm=2:5:3 mass ratio) to pulverize calcium carbonate for 1 hour;

[0028] (4) In a stirring state, sequentially add the porous dititanic acid submicron-sized particle balls obtained in step (2) and the pulverized calcium carbonate in step (3) into a mix...

example 2

[0032] (1) Add 17.5mL of isopropanol and 5mL of dimethylformamide to a 50mL reaction flask in turn, then add 1.2g of n-butyl titanate and stir for 5min; then transfer the resulting solution to a high-pressure reactor, and The temperature of the reaction system was raised to 260°C and maintained for 2 hours; after the thermal reaction was over, the autoclave was allowed to cool down to room temperature naturally;

[0033] (2) The product obtained in step (1) was suction filtered, precipitated, and washed three times with absolute ethanol to obtain a precursor of porous dititanic acid submicron particle balls with a white hierarchical structure;

[0034] (3) Put 20g of calcium carbonate into a high-energy ball mill, and use three kinds of mixed beads with different particle sizes (Φ0.3mm:Φ0.6mm:Φ0.9mm=2:5:3 mass ratio) to pulverize calcium carbonate for 1 hour;

[0035] (4) In a stirring state, sequentially add the porous dititanic acid submicron-sized particle balls obtained in...

example 3

[0038] (1) Add 20mL of isopropanol and 15mL of dimethylformamide to a 50mL reaction flask in turn, then add 2g of n-butyl titanate, and stir for 5min; then transfer the resulting solution to a high-pressure reactor, and the reaction system Raise the temperature to 200°C and maintain it for 20 hours; after the thermal reaction is over, let the autoclave cool down to room temperature naturally;

[0039] (2) Suction filter the product obtained in step (1); precipitate and wash three times with absolute ethanol; obtain the precursor of porous dititanic acid submicron particle balls with white hierarchical structure;

[0040] (3) Put 20g of calcium carbonate into a high-energy ball mill, and use three kinds of mixed beads with different particle sizes (Φ0.3mm:Φ0.6mm:Φ0.9mm=2:5:3 mass ratio) to pulverize calcium carbonate for 1 hour;

[0041] (4) In a stirring state, sequentially add the porous dititanic acid submicron-sized particle balls obtained in step (2) and the pulverized cal...

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Abstract

The invention discloses a solid phase preparation method of porous calcium titanate micro-nano particle spheres. The preparation method comprises the following steps: adding tetrabutyl titanate and organic mixed solution into a high pressure reactor, so as to be subjected to thermal reaction; performing suction filtration, sedimentation and washing on obtained products, so as to obtain porous dititanate submicron particle sphere precursors; stirring and mixing porous dititanate submicron particle spheres and calcium carbonate, heating mixture to preset temperature, keeping a preset time quantum at the preset temperature, and performing natural cooling, so as to obtain the porous calcium titanate micro-nano particle spheres with good dispersity. The method is environmental-friendly for production technology, simple in production method, safe, low in cost, and high in yield, and the prepared products have fractional porous sphere shapes, and are good in dispersity and uniform in particle sizes and shapes.

Description

technical field [0001] The invention relates to the field of synthesis of inorganic non-metallic functional materials, in particular to a solid-phase preparation method of porous calcium titanate micro-nano particle spheres. Background technique [0002] Perovskite oxides have become the focus of research on functional oxide materials due to their excellent physical properties. Developing its practical application value can promote the upgrading and progress of the electronic material industry. Calcium titanate is the first discovered perovskite oxide, because of its wide source of raw materials, low preparation cost, and its good dielectric and optical properties, it is widely used as ceramic capacitor materials and optical materials. [0003] Because micro-nano particle sphere materials not only have many excellent secondary morphology characteristics, but also inherit the characteristics of nano-components, micro-nano particle sphere materials have a wide range of uses. ...

Claims

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Application Information

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IPC IPC(8): C01G23/00B82Y40/00
CPCC01G23/006C01P2002/72C01P2002/82C01P2004/03C01P2004/52
Inventor 赵世玺陈昌科邓玉峰徐亚辉熊凯
Owner 淮安新能源材料技术研究院
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