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Method for preparing attapulgite loaded nano cerium oxide

A technology of nano-cerium oxide and attapulgite, which is applied in the field of preparation of attapulgite-loaded nano-cerium oxide, to achieve good dispersion, wide application value, and low price

Active Publication Date: 2010-08-04
溧阳常大技术转移中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no report on the research on attapulgite-loaded nano-cerium oxide.

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  • Method for preparing attapulgite loaded nano cerium oxide
  • Method for preparing attapulgite loaded nano cerium oxide
  • Method for preparing attapulgite loaded nano cerium oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: After the natural attapulgite clay is pretreated with hydrochloric acid, a slurry with a solid content of about 10% is made. Take 10 g of the slurry and add it to 90 ml of deionized water so that the concentration of the attapulgite is 10 g / l , then add Ce(NO 3 ) 3 0.005mol, making Ce 3+ The concentration relative to the solution is 0.05mol / l, stir the solution evenly with an electric stirrer, and then add the relative Ce 3+ About 0.025 mol of HMT with 5 times the molar amount was stirred evenly, and the mixed solution was stirred by an electric stirrer and placed in a water bath at 75°C for 2 hours, then taken out and cooled to room temperature, filtered, washed with deionized water for 3 times, and then Washed with absolute ethanol for 3 times, dried at 80°C, calcined at 200°C for 2h, and fully ground the sample after cooling to obtain attapulgite powder loaded with nano-cerium oxide. The X-ray powder diffraction experiment was carried out on the obt...

Embodiment 2

[0016] Embodiment 2: Change Ce(NO 3 ) 3 The addition amount of HMT was 0.01mol, the addition amount of HMT was 0.02mol, the concentration of the attapulgite was controlled at 2g / l, reacted in a water bath at 70°C for 3h, and then calcined at 300°C for 5h, and the subsequent detection was as in Example 1.

Embodiment 3

[0017] Embodiment 3: change Ce(NO 3 ) 3 The addition amount of HMT was 0.05mol, the addition amount of HMT was 1.0mol, the concentration of the attapulgite was controlled at 50g / l, reacted in a water bath at 100°C for 1h, and then calcined at 700°C for 5h, and the subsequent detection was as in Example 1.

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Abstract

The present invention provides a fine finishing of nonmetalic mineral resource and inorganic chemical industry field, characterized in that natural attapulgite clay is produced to sizing agent which solid content is about 10% after being pretreated by hydrochloric acid, a certain quality attapulgite clay and cerous salt are mixed to dissolve in the de-ionized water, the solution is evenly blendedby electric mixer, wherein Ce3+ relative to the concentration range of solution is 0.001mol / l-0.5mol / l, the concentration range of the attapulgite clay is 2-50g / l; further adding a certain quality HMT, and mixing evenly, mol ratio of HMT and cerous salt is between 2:1-20:1; the blended solution is placed in the 70-100 Celsius water bath to react 1-5h under the mixing of the electric mixer, removing and cooling to the room temperature, calcining 1-5h under the temperature 200-700 Celsius after filtering, washing and drying, attapulgite powder loading nanometer cerium oxide is obtained. The attapulgite powder of the invention has a homogeneous load, better dispersivity, has no complex equipment, and less chemical material sorts, lower cost and better experiment repeatability.

Description

technology field; [0001] The invention relates to the technical fields of fine processing of non-metallic mineral resources and inorganic chemical industry, more specifically a preparation method of nano cerium oxide loaded on attapulgite rods. Background technique [0002] Due to the influence of surface effects, nanoparticles have large specific surface area, many surface active centers, and good selectivity, which can significantly improve the catalytic efficiency. Nanoparticles have been regarded as the fourth generation of catalysts in the world, and may become the main role of catalytic reactions in this century. Cerium is a lanthanide with good redox properties. Cerium oxide is the most active oxide catalyst in the rare earth oxide series. It has a unique crystal structure, high oxygen storage capacity (OSC) and oxygen release capacity, and strong oxidation-reduction performance (Ce 3+ / C 4+ ), which has attracted great attention, and some research results have bee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/10B01J21/16
Inventor 陈志刚李霞章陈丰陆晓旺姚超张跃
Owner 溧阳常大技术转移中心有限公司
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