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Method for preparing mesoporous metallic oxide material

A mesoporous silicon oxide and oxide technology, applied in the direction of oxide/hydroxide preparation, etc., to achieve the effect of simple operation, low cost, and broad application prospects

Inactive Publication Date: 2009-03-25
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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At present, there are no specific reports on this method at home and abroad.

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  • Method for preparing mesoporous metallic oxide material
  • Method for preparing mesoporous metallic oxide material
  • Method for preparing mesoporous metallic oxide material

Examples

Experimental program
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Effect test

Embodiment 1

[0037] According to literature reports, a KIT-6 mesoporous silica template (pore volume of 1.2 cm 3 / g). Dissolve 1.8 g of cobalt nitrate hexahydrate in 1.5 mL of absolute ethanol and draw into the syringe. Take 1g of the KIT-6 template, and then add the cobalt nitrate solution in a dropwise manner. The obtained powder was dried in an oven at 70°C, and the dried powder was placed in a resistance furnace at a heating rate of 2°C / min to 500°C and maintained at this temperature for 2 hours. The obtained powder was removed twice with 2M sodium hydroxide solution at 80 °C, filtered, washed with deionized water, and then dried to obtain mesoporous cobalt oxide (Co 3 o 4 -1). The specific surface area of ​​this sample is 97.7m 2 / g, the most probable pore diameter is 3.3nm.

[0038] The resulting mesoporous cobalt oxide (Co 3 o 4 -1) structural characterization see attached figure 1 , 2 and 3.

Embodiment 2

[0040] According to the process described (same as Example 1), but the powder infiltrated with the precursor was put into a resistance furnace at a heating rate of 2°C / min to 300°C and maintained at this temperature for 2h. Then repeat embodiment 1 (the precursor solution that drops is that the cobalt nitrate hexahydrate of 1.6g is dissolved in the ethanol of 1.3mL), the obtained mesoporous cobalt oxide is Co 3 o 4 -2. The specific surface area of ​​this sample is 79.2m 2 / g, the most probable pore diameter is 2.8nm.

[0041] The resulting mesoporous cobalt oxide (Co 3 o 4 -2) structural characterization see attached figure 1 , 2 and 4.

Embodiment 3

[0043] According to the technical process described (same as Example 1), 1.93g of nickel nitrate hexahydrate was dissolved in 1.5mL of absolute ethanol, and sucked in the syringe. Others are the same as in Example 1, and mesoporous nickel oxide (NiO) is obtained. The specific surface area of ​​this sample is 73.6m 2 / g, the most probable pore diameter is 2.8nm.

[0044] The structural characterization of the resulting mesoporous nickel oxide (NiO) is shown in the attached Figure 5 , 6 and 7.

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Abstract

The invention provides a mesoporous metal oxide preparation method belonging to the inorganic nano material synthesis field. The invention adds a precursor solution into a mesoporous template powder so as to lead the precursor solution to penetrate into mesoporous channels through capillary force. After the following drying and heating, the mesoporous template is removed to obtain the corresponding mesoporous oxide. The preparation condition is simple; the cost is low; the productivity is high; the operation is easy and the environment protection can be guaranteed; and the prepared metal oxide is better, the mesopore structure is ordered and the wall is crystallized.

Description

technical field [0001] The invention provides a method for preparing a mesoporous metal oxide, which belongs to the field of synthesis of inorganic nanometer materials. Background technique [0002] Due to their unique catalytic, optical and electrical properties, mesoporous metal oxides have broad application prospects in heterogeneous catalysis, sensors and electrode materials. Therefore, the synthesis of mesoporous metal oxides has become a research hotspot of scientists in recent years, and many synthetic methods have been proposed. Generally, there are "soft template method" and "hard template method". Although the mesoporous metal oxide prepared by the soft template method has a good mesoporous structure, the mesoporous wall is amorphous or semi-crystalline, which greatly limits the performance of the prepared mesoporous metal oxide. Application: The preparation of mesoporous metal oxide materials by the hard template method has received a lot of attention, and many ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B13/14
Inventor 郭利民施剑林陈振兴高哲何前军张小娟
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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