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Production of spherical zirconia powder by molecular thin-layer ammoni-ation

A technology of zirconia powder and thin layer, which is applied in zirconia and other directions, can solve the problems of particle size and dispersion better, and achieve the effects of low production cost, simple reaction conditions and simple process flow

Inactive Publication Date: 2007-11-21
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above documents mainly disclose the preparation of zirconia and the control of zirconia particle size or dispersibility, but due to the shortcomings and deficiencies of the method itself, the problem of particle size and dispersion cannot be better solved.

Method used

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  • Production of spherical zirconia powder by molecular thin-layer ammoni-ation
  • Production of spherical zirconia powder by molecular thin-layer ammoni-ation
  • Production of spherical zirconia powder by molecular thin-layer ammoni-ation

Examples

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Embodiment 1

[0027] The reactor used is shown in Figure 1. 0.1545gZrOCl 2 ·H 2 Dissolve O in absolute ethanol, heat to 35°C to dissolve, and then dilute to 25 mL with absolute ethanol. In a closed reactor (operation box) 2, the zirconium oxychloride alcohol solution is dripped on a glass slide 3, and then another same material is covered on the zirconium oxychloride alcohol solution on the glass slide 3 Slide 3 (clean the two slides with absolute ethanol or acetone before use, and dry), squeeze the zirconium oxychloride alcohol solution between the two slides, and use 2.5×10 -3 Push the two slides horizontally at the speed of m / s, so that the two slides move toward each other, so that the zirconium oxychloride alcohol solution discharges tiny bubbles, forming a thin layer of the zirconium oxychloride alcohol solution, with a thickness of 1.5×10 -7 m; Make the zirconium oxychloride alcohol solution on the upper and lower surfaces of the upper and lower glass slides react with the ammonia...

Embodiment 2

[0029] The reactor used is shown in Figure 1. 0.2304gZrOCl 2 ·H 2 Dissolve O in absolute ethanol, heat to 40°C to dissolve, and then dilute to 25 mL with absolute ethanol. In a closed reactor (operating box) 2, the zirconium oxychloride alcohol solution is dripped on an aluminum plate 3, and on the zirconium oxychloride alcohol solution on the aluminum plate 3, another aluminum plate 3 of the same material is covered ( Clean the two aluminum plates with absolute ethanol or acetone before use, and dry), squeeze the zirconium oxychloride alcohol solution between the two aluminum plates, and use 1.5×10 -3 Push the two aluminum plates horizontally at the speed of m / s, so that the two aluminum plates move towards each other, so that the zirconium oxychloride alcohol solution discharges tiny bubbles, and forms a thin layer of the zirconium oxychloride alcohol solution with a thickness of 5.5×10 -7 m; Make the zirconium oxychloride alcohol solution on the upper and lower surfaces ...

Embodiment 3

[0031] The reactor used is shown in Figure 1. 0.6182gZrOCl 2 ·H 2 Dissolve O in anhydrous ethylene glycol, heat to 45°C to dissolve, and then dilute to 25 mL with anhydrous ethylene glycol. In a closed reactor (operation box) 2, the zirconium oxychloride alcohol solution is dripped on a glass slide 3, and then another same material is covered on the zirconium oxychloride alcohol solution on the glass slide 3 Slide 3 (clean the two slides with absolute ethanol or acetone before use, and dry), squeeze the zirconium oxychloride alcohol solution between the two slides, and use 2.5×10 -4 Push the two slides horizontally at the speed of m / s, so that the two slides move toward each other, so that the zirconium oxychloride alcohol solution discharges tiny bubbles, forming a thin layer of the zirconium oxychloride alcohol solution, with a thickness of 2.5×10 -6 m; Make the zirconium oxychloride alcohol solution on the upper and lower surfaces of the upper and lower glass slides reac...

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Abstract

A method for producing superfine spherical ZrO2 powder by molecular thin film is carried out by taking zirconium oxychloride alcohol solution as raw material, extruding by two templates in enclosed reactor, slide pushing zirconium oxychloride alcohol solution between two templates, discharging micro-bubble to form into molecular thin layer, reacting zirconium oxychloride alcohol with ammonia, and burning lower and upper thin plates and reactant at different temperature to obtain final product. Granular diameter can be regulated at a range of one nanometer to 30 nanometers. It's simple and cheap, has excellent dispersion and zero-pollutant discharge.

Description

technical field [0001] The invention belongs to the field of powder synthesis, in particular to a method for preparing ultrafine spherical ZrO by molecular thin film ammoniation 2 powder method. technical background [0002] ZrO 2 It has excellent mechanical properties, low thermal conductivity, good thermal shock resistance, high hardness at room temperature, and good wear resistance. It is used in high-temperature structural materials, high-temperature optical components, oxygen-sensitive components and fuel cells, etc. has a wide range of applications. And because ZrO 2 The surface has the bifunctional properties of weak acid and weak base, so it occupies an important position in the field of catalysis. With the research and development of photonic crystals, ZrO 2 Because of its high refractive index and good stability, ultrafine powder has broad application prospects in the field of three-dimensional bandgap materials. [0003] About ZrO 2 And its preparation meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/02
Inventor 唐清杨玮娇季清荣李钒安震涛
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI