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Technology for preparing ultrafine nano metal oxide materials

A technology of ultra-fine nano-metal compounds, which is applied in the field of preparation of ultra-fine nano-metal oxide materials, can solve the problems of high preparation cost, poor controllability of nano-size, complex preparation process conditions of ultra-fine nano-oxide materials, etc., to achieve Fast price, simple operation method, and the effect of increasing the specific surface area

Inactive Publication Date: 2006-12-27
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a superfine nano-oxide material with simple process and easy control of the size of nano-materials for the shortcomings of the existing ultra-fine nano-oxide materials, such as complex preparation process conditions, poor controllability of nano-size, and high preparation cost. Preparation Technology of Nano Metal Oxide Materials

Method used

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  • Technology for preparing ultrafine nano metal oxide materials
  • Technology for preparing ultrafine nano metal oxide materials
  • Technology for preparing ultrafine nano metal oxide materials

Examples

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Effect test

Embodiment 1

[0021] According to Example 3-1, a loose powder gel (ie, oxide precursor) was prepared. Afterwards, the oxide precursor was roasted at 800° C. for 3 hours under normal pressure with nitrogen protection at a flow rate of (30-50 ml / min) to obtain a black carbon-containing oxide intermediate. Finally, the black carbon-containing oxide intermediate was calcined at 400°C in the air for 3 hours to obtain ultrafine zirconium cerium oxide. Characterized by XRD, TEM and BET, the prepared cerium zirconium oxide was ultrafine Nanomaterials, see Attached Table 1 and Attached figure 1 , attached figure 2 , attached Figure 4 .

Embodiment 2

[0025] Weigh 32.37g Ce(NO 3 ) 3 ·6H 2 O, 8.00g Zr(NO 3 ) 4 ·5H 2 O and 16.16g of malic acid were mixed and dissolved in an appropriate amount of deionized water to obtain a precursor solution. Then, under the condition of stirring, heat with electric furnace with controlled current, carefully evaporate to a viscous sol, and dry it at about 100°C for 10-14 hours to obtain a loose powder gel (that is, the oxide precursor). Afterwards, the oxide precursor was roasted at 600° C. for 3 hours under normal pressure with nitrogen protection at a flow rate of (30-50 ml / min) to obtain a black carbon-containing oxide intermediate. Finally, the black carbon-containing oxide intermediate was calcined at 400°C in the air for 3 hours to obtain ultrafine cerium-zirconium oxides. Characterized by XRD, TEM and BET, the prepared cerium-zirconium oxides were ultrafine cerium-zirconium oxides with high specific surface area. Nanomaterials, see Attached Table 1 and Attached Figure 1~3 .

Embodiment 3

[0029] Weigh 7.30g Ce(NO 3 ) 2 ·6H 2 O, 28.87g Zr(NO 3 ) 2 ·6H 2 O and 17.66g of citric acid were mixed and dissolved in an appropriate amount of deionized water to obtain a precursor solution. Then heat it with a water bath under the condition of stirring, carefully evaporate to a viscous sol, and dry it at about 100°C for 10 to 14 hours to obtain a loose powder gel (that is, the oxide precursor). Afterwards, the oxide precursor was roasted at 600° C. for 3 hours under normal pressure with nitrogen protection at a flow rate of (30-50 ml / min) to obtain a black carbon-containing oxide intermediate. Finally, the black carbon-containing oxide intermediate was calcined at 400°C in the air for 3 hours to obtain ultrafine zirconium cerium oxide. Characterized by XRD, TEM and BET, the prepared zirconium cerium oxide was ultrafine For nanomaterials, see Attached Table 1.

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Abstract

The invention discloses a preparing technology of super-fine nanometer metal oxide material in the nanometer material preparing domain, which is characterized by the following: preparing oxide priority through certain proportional metal composition and organic complex compound; sintering protected by nitrogen; making organic complex compound carbonize to decompose; placing materials in the air to remove carbon at lower temperature to obtain super-fine nanometer material with high specific surface area.

Description

technical field [0001] The invention relates to the technical field of preparation of nanometer materials, in particular to a preparation technology of ultrafine nanometer metal oxide materials. Background technique [0002] Due to the characteristics of quantum size effect, small size effect, surface effect and macroscopic tunnel effect, nanomaterials have been widely used in many fields. For this reason, a large number of nanomaterials, especially ultrafine nanometer metal oxide materials, have been prepared. Currently, there are a large number of preparation technologies for ultra-fine nano-metal oxide materials disclosed in Chinese patent documents, such as: [0003] Patent No. 200310117453.4 High temperature and high pressure supercritical fluid method for preparing ultrafine metal oxide nanomaterials. The high-temperature and high-pressure supercritical fluid method for preparing ultrafine metal oxide nanomaterials requires special equipment and relatively harsh exper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G1/02C04B35/622
Inventor 罗孟飞谢冠群谢云龙方萍应跃芳
Owner ZHEJIANG NORMAL UNIVERSITY
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