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Preparation method of nano attapulgite adsorbent

A technology of nano-attapulgite and attapulgite, applied in chemical instruments and methods, and other chemical processes, to achieve the effect of simple process and equipment requirements and easy process control

Active Publication Date: 2014-04-30
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there has been no report so far of obtaining nano-attapulgite adsorbents with high adsorption capacity by solvothermal synthesis method

Method used

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  • Preparation method of nano attapulgite adsorbent
  • Preparation method of nano attapulgite adsorbent

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Example 1: Disperse 2 g of attapulgite clay in 600 mL of dimethylformamide under stirring conditions, stir for 30 min to disperse evenly, place in a 1 L autoclave, react at 120 °C for 120 h, cool down naturally, separate, and dry. Crushed through a 200-mesh sieve to obtain a functionalized attapulgite adsorbent. Compared with the original soil, the adsorption of zearalenone and methylene blue dye by this adsorbent increased by 21.9 and 118.5%, respectively.

Embodiment 2

[0020] Example 2: Under stirring conditions, 6 g of attapulgite clay was dispersed in 600 mL of dimethylformamide, stirred for 30 min to disperse evenly, and then placed in a 1 L high-pressure reactor at 180 °C for 48 h, cooled naturally, and separated. Dry, crush and pass through a 200-mesh sieve to obtain a functionalized attapulgite adsorbent. Compared with the original soil, the adsorption of zearalenone and methylene blue dye by this adsorbent increased by 33.9 and 158.3%, respectively.

Embodiment 3

[0021] Example 3: Under stirring conditions, disperse 20 g of attapulgite clay in 600 mL of dimethyl sulfoxide, stir for 30 min to disperse evenly, place in a 1 L autoclave, react at 180 °C for 96 h, cool down naturally, separate, dry, and pulverize Pass through a 200-mesh sieve to obtain a functionalized attapulgite adsorbent. Compared with the original soil, the adsorption of zearalenone and methylene blue dye by this adsorbent increased by 10.8 and 132.6%, respectively.

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Abstract

The invention discloses a preparation method of a nano attapulgite adsorbent. The preparation method comprises the steps of dispersing attapulgite clay in a solvent under a stirring condition according to a solid-to-liquid ratio of 1:(25-300), reacting for 48-120 hours at temperature of 120-200 DEG C in a high-pressure reaction kettle, centrifugally separating, washing and then drying to obtain the nano attapulgite adsorbent with a high adsorption capacity. According to the preparation method of the nano attapulgite adsorbent, the adsorption capacity of the nano attapulgite adsorbent is improved by using solvent thermal reaction; the nano attapulgite adsorbent is applicable to adsorption of feed mycotoxins, heavy metal ions and cationic dyes.

Description

technical field [0001] The invention relates to a preparation method of a nano-attapulgite adsorbent, which uses solvothermal reaction to prepare the attapulgite adsorbent with functional groups, and belongs to the technical field of deep processing and preparation of nano-silicate materials. Background technique [0002] Attapulgite clay (also known as palygorskite or palygorskite) is a hydrous magnesium-rich aluminosilicate mineral with attapulgite as the main component. The length of attapulgite rod crystals is generally 1-5 μm, and the diameter is 20-70 nm. Attapulgite with long rod crystals has good colloidal properties, and attapulgite with short rod crystals has good adsorption properties. However, the adsorption performance of attapulgite with natural short rod crystals is not ideal, and how to further improve the adsorption performance through effective methods has become the premise of whether it can be widely used. [0003] Under the premise of a certain aspect ...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/30
Inventor 王爱勤张志芳王文波康玉茹
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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