Method for preparing aluminosilicate nanotube by using kaolinite raw material

A technology of aluminosilicate and kaolinite, applied in the direction of silicate, aluminum silicate, nanotechnology, etc., can solve the problems of environmental hazards, cumbersome technical methods, and many types of reaction raw materials, and achieve low cost and simple process Ease of operation, tubular shape and high structural uniformity

Active Publication Date: 2012-07-18
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to overcome the shortcomings of the existing synthetic (haloysite-like) aluminosilicate nanotubes, which are cumbersome, many types of reaction raw materials, and have potential environmental hazards, and propose a method for preparing aluminum-silicon with kaolinite raw materials. The main advantage of this method is that it makes full use of the properties of kaolinite organic intercalation reaction, and directly uses cationic surfactants to react with kaolinite modified by methanol interlayer grafting to prepare a Aluminosilicate nanotubes with uniform appearance and structure

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  • Method for preparing aluminosilicate nanotube by using kaolinite raw material
  • Method for preparing aluminosilicate nanotube by using kaolinite raw material
  • Method for preparing aluminosilicate nanotube by using kaolinite raw material

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Embodiment 1

[0028] 1. Preparation of kaolinite-dimethyl sulfoxide complex: 10 g of Maoming kaolinite was added to 60 mL of dimethyl sulfoxide, and stirred at 150° C. for 2 days. Then centrifuge at 4000 rpm for 3 minutes for solid-liquid separation. Recover the supernatant for recycling. Dry the obtained solid at 90°C to constant weight to obtain the kaolinite-dimethyl sulfoxide composite.

[0029] 2. Preparation of kaolinite-methanol complex: 5 g of the kaolinite-dimethyl sulfoxide complex obtained in step 1 was added to 50 mL of methanol, and stirred at room temperature for 7 days. Then centrifuge at 4000 rpm for 3 minutes for solid-liquid separation. The resulting solid is the kaolinite-methanol complex.

[0030] 3. Preparation of aluminosilicate nanotubes: Hexadecyltrimethylammonium chloride was dissolved in methanol to prepare a solution with a concentration of 1 mol / L. Add 1.0 g of the kaolinite-methanol complex prepared in step 2 to 40 mL of the above solution, and stir at 60° C...

Embodiment 2

[0034] 1. Preparation of kaolinite-dimethyl sulfoxide complex: 10 g of Maoming kaolinite was added to 60 mL of dimethyl sulfoxide, and stirred at 150° C. for 2 days. Then centrifuge at 4000 rpm for 3 minutes for solid-liquid separation. The obtained solid was dried at 90° C. to a constant weight to obtain a kaolinite-dimethyl sulfoxide composite.

[0035] 2. Preparation of kaolinite-methanol complex: 5 g of the kaolinite-dimethyl sulfoxide complex obtained in step 1 was added to 50 mL of methanol, and stirred at room temperature for 7 days. Then centrifuge at 4000 rpm for 3 minutes for solid-liquid separation. The resulting solid is the kaolinite-methanol complex.

[0036] 3. Preparation of aluminosilicate nanotubes: dodecyltrimethylammonium bromide was dissolved in methanol to prepare a solution with a concentration of 1 mol / L. Add 1.0 g of the kaolinite-methanol complex prepared in step 2 to 40 mL of the above solution, and stir at 60° C. for 24 hours. Then centrifuge at...

Embodiment 3

[0039] 1. Preparation of kaolinite-dimethyl sulfoxide complex: 10 g of Maoming kaolinite was added to 60 mL of dimethyl sulfoxide, and stirred at 150° C. for 2 days. Then centrifuge at 4000 rpm for 3 minutes for solid-liquid separation. The obtained solid was dried at 90° C. to a constant weight to obtain a kaolinite-dimethyl sulfoxide complex.

[0040] 2. Preparation of kaolinite-methanol complex: 5 g of the kaolinite-dimethyl sulfoxide complex obtained in step 1 was added to 50 mL of methanol, and stirred at room temperature for 7 days. Then centrifuge at 4000 rpm for 3 minutes for solid-liquid separation. The resulting solid is the kaolinite-methanol complex.

[0041] 3. Preparation of aluminosilicate nanotubes: Hexadecyltrimethylammonium chloride was dissolved in methanol to prepare a solution with a concentration of 1 mol / L. Add 1.0 g of the kaolinite-methanol complex prepared in step 2 to 40 mL of the above solution, and stir at 60° C. for 24 hours. Then centrifuge a...

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Abstract

The invention discloses a method for preparing an aluminosilicate nanotube by using a kaolinite raw material. The method comprises the following steps of: preparing a kaolinite-dimethyl sulfoxide compound; preparing a kaolinite-methanol compound; dissolving a cationic surfactant into methanol; adding into the kaolinite-methanol compound obtained in the step 2 for preparing the aluminosilicate nanotube, and the like. The method has the advantages and positive effects that: an aluminosilicate nanotube material with high purity and a uniform structure and shape is prepared, the material has low cost, simple flow, low pollution and low energy consumption, and is easy for popularizing and applying.

Description

technical field [0001] The invention relates to a method for preparing aluminosilicate nanotubes from kaolinite raw materials. Background technique [0002] Kaolinite (Al 2 Si 2 o 5 (OH) 4 ) is a 1:1 dioctahedral layered silicate mineral, whose crystal structure unit is composed of an aluminum-oxygen octahedral layer and a silicon-oxygen tetrahedral layer, and the structural units are combined by hydrogen bonds. Kaolinite mineral particles are aggregates composed of stacked and laminated kaolinite flakes in the form of pseudo-hexagonal sheets (mostly book-shaped), and the particle size is usually in the micron range. my country is rich in kaolinite resources. The proven reserves of non-coal-measure kaolinite are 1.914 billion tons (Wang Huaiyu et al., China Non-Metallic Mining Industry Guide, 2008), and the predicted reserves of coal-measure kaolinite are 16.615 billion tons, ranking It ranks first in the world (Du Zhenbao et al., Coal Processing and Comprehensive Utiliz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/26B82Y40/00
Inventor 谭道永袁鹏刘冬何宏平颜文昌刘红梅杨淑勤
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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