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Method for preparing off-white attapulgite by hydrothermal method

A technology of attapulgite and attapulgite clay, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of protein denaturation, vascular toxicity, liver and kidney toxicity, etc. The effect of efficiency

Active Publication Date: 2016-08-17
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

Studies have shown that dimethyl sulfoxide has serious toxic effects, interacts with protein hydrophobic groups, can lead to protein denaturation, has vascular toxicity and liver and kidney toxicity

Method used

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  • Method for preparing off-white attapulgite by hydrothermal method
  • Method for preparing off-white attapulgite by hydrothermal method
  • Method for preparing off-white attapulgite by hydrothermal method

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Under stirring conditions, disperse 0.6g sulfuric acid and 0.3g sodium sulfide in 600 mL water, add 8g brick red attapulgite clay and stir for 1 hour to disperse evenly, then place it in a 1 L autoclave and react at a temperature of 180 °C After 48 h, the temperature was naturally cooled to room temperature, centrifuged and washed with tap water, dried, crushed, and passed through a 200-mesh sieve to obtain a reddish attapulgite. The attapulgite has an adsorption capacity of 105 mg / g for heavy metal copper ions.

Embodiment 2

[0023] Under stirring conditions, disperse 1.5g aminoacetic acid and 0.5g zinc sulfide in 600 mL water, add 10g brick red attapulgite clay and stir for 1 hour to disperse evenly, then place it in a 1 L autoclave, at a temperature of 220 ℃ After reacting for 48 h, cool down to room temperature naturally, centrifuge, wash with tap water, dry and pulverize. Pass through a 200-mesh sieve to obtain off-white attapulgite. The attapulgite has an adsorption capacity of 108 mg / g for heavy metal copper ions.

Embodiment 3

[0025] Under stirring conditions, disperse 1.5g acetic acid and 0.8g ammonium sulfide in 600 mL water, add 15g brick red attapulgite clay and stir for 1 hour to disperse evenly, then place it in a 1 L autoclave and react at a temperature of 200 °C After 72 hours, the temperature was naturally cooled to room temperature, centrifuged, washed with tap water, dried, crushed, and passed through a 200-mesh sieve to obtain off-white attapulgite. The attapulgite has an adsorption capacity of 112 mg / g for heavy metal copper ions.

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Abstract

The invention discloses a method for converting brick-red attapulgite into off-white attapulgite, and belongs to the technical field of deep processing and preparation of nano silicate materials. In this method, brick-red attapulgite clay is uniformly dispersed in a solution containing acid and sulfur-containing compounds at a solid-to-liquid mass ratio of 1:30~1:100, reacted at 180~250°C for 12~96h, and naturally cooled to room temperature , centrifuged, washed, dried, and crushed to obtain off-white attapulgite. In the present invention, the sulfur in the sulfur-containing compound interacts with the attapulgite in a hydrothermal environment, so that the ferric iron in the attapulgite skeleton can be reduced, and the transformation of the brick-red attapulgite color is realized; at the same time, the hydrothermal process improves the The zeta potential of attapulgite improves the adsorption performance of attapulgite and opens up a new way for the high-value utilization of brick-red attapulgite clay.

Description

technical field [0001] The invention relates to a method for converting brick-red attapulgite into off-white attapulgite, in particular to a method for obtaining off-white attapulgite in a hydrothermal environment by using the reduction of sulfur-containing compounds, which belongs to nano silicate Material deep processing and preparation technology field. Background technique [0002] Attapulgite clay (also known as palygorskite or palygorskite) is a natural nano-scale hydrous magnesium-rich and aluminosilicate clay mineral with attapulgite as the main component. It has unique one-dimensional nanorod crystals and Therefore, it has been applied in many fields such as oil decolorization, molecular sieves, composite materials, functional carriers and environmental protection. [0003] my country first found large-scale high-quality attapulgite clay deposits in Jiangsu and Anhui provinces, and later discovered a number of deposits (spots) in Gansu, Sichuan, Guizhou, Henan, Sha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/40
Inventor 王爱勤张志芳王文波牟斌康玉茹汪琴
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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