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Preparation method of kaolin/1-butyl-3-methyl bromide imidazole intercalated nanocomposite

A technology of imidazole methyl bromide and nanocomposite materials, applied in chemical instruments and methods, luminescent materials, silicon compounds, etc., can solve the problems of unfavorable large-scale production, small amount of one-time reaction, harsh reaction conditions, etc., and achieve good UV The effects of absorption performance, stable properties and complete structure

Inactive Publication Date: 2014-05-14
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Although the above studies have successfully prepared kaolin / imidazole ionic liquid intercalation nanocomposites, there are still some shortcomings: (1) Kaolin needs to be heat-treated in advance; (2) The preparation temperature is high, and the temperature should reach above 190 °C; The cycle is long, at least 15 days or more; (4) The reaction conditions are relatively harsh and need to be carried out under the protection of nitrogen; (5) The amount of one reaction is small, which is not conducive to large-scale production

Method used

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  • Preparation method of kaolin/1-butyl-3-methyl bromide imidazole intercalated nanocomposite

Examples

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Embodiment 1

[0039] 1) Preparation of kaolin / dimethyl sulfoxide intercalation complex: Weigh 3 g of kaolin, add it to a mixed solution consisting of 45 ml dimethyl sulfoxide and 4.5 ml deionized water, and stir at 20 ° C with a magnetic stirrer to The reaction was carried out for 48 hours under stirring at a rotation speed of 300 rpm, and then the reaction product was filtered, washed, and dried at 60°C to obtain a kaolin / dimethyl sulfoxide intercalation complex;

[0040] 2) Preparation of kaolin / methanol intercalation complex: Weigh 2g of kaolin / dimethyl sulfoxide intercalation complex, add it to 24ml of methanol, stir at 20°C with a magnetic stirrer at a speed of 400 rpm React for 96 hours, centrifuge the reacted suspension at 1000 rpm for 15 minutes every 12 hours, discard the supernatant after centrifugation, replace with new methanol to continue the reaction, and discard the upper layer after the last centrifugation supernatant to obtain kaolin / methanol intercalation complex;

[0041...

Embodiment 2

[0051] 1) Preparation of kaolin / dimethyl sulfoxide intercalation complex: Weigh 2g of soft kaolin from Lincang, Yunnan, and add it to a mixed solution consisting of 15ml dimethyl sulfoxide and 1.5ml deionized water. and react with a magnetic stirrer at a speed of 400 rpm for 72 hours, then filter the reaction product, wash it, and dry it at 50°C to obtain a kaolin / dimethyl sulfoxide intercalation complex. The Yunnan Lincang soft Al in kaolin 2 o 3 The mass percentage content is 37.7%, Fe 2 o 3 The mass percentage content is 0.19%, TiO 2 The mass percentage content is 0.13%, the whiteness is 86, and the average particle size is 10μm;

[0052] 2) Preparation of kaolin / methanol intercalation complex: weigh 2g of kaolin / dimethyl sulfoxide intercalation complex, add it to 30ml of methanol to obtain a mixed solution, and use a magnetic stirrer at 35°C with a rotation speed of 500 rpm React for 120 hours under stirring conditions per minute, centrifuge the reacted suspension at ...

Embodiment 3

[0058]1) Preparation of kaolin / dimethyl sulfoxide intercalation complex: Weigh 4g of Yunnan Lincang soft kaolin, add it to a mixed solution consisting of 30ml dimethyl sulfoxide and 3ml deionized water, and heat at 35°C and React with a magnetic stirrer at 500 rpm for 96 hours, then filter the reaction product with suction, wash, and dry at 55°C to obtain a kaolin / dimethyl sulfoxide intercalation complex;

[0059] 2) Preparation of kaolin / methanol intercalation complex: Weigh 3g of kaolin / dimethyl sulfoxide intercalation complex, add it to 60ml of methanol, and react at 10°C with a magnetic stirrer at 400 rpm for 144 Every 24 hours, centrifuge the reacted suspension at 4000 rpm for 5 minutes, discard the supernatant after centrifugation, replace with new methanol and continue the reaction, and discard the supernatant after the last centrifugation , to obtain kaolin / methanol intercalation complex;

[0060] 3) Preparation of 1-butyl-3-methylimidazole bromide: Weigh 8.2g of N-me...

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Abstract

The invention discloses a preparation method of a kaolin / 1-butyl-3-methyl bromide imidazole intercalated nanocomposite. The method comprises the following steps: firstly, directly intercalating the kaolin by using dimethyl sulfoxide to obtain a kaolin / dimethyl sulfoxide intercalated composite; then intercalating the kaolin intercalated composite by using methyl alcohol to obtain a kaolin / methyl alcohol intercalated composite; and finally, enabling synthesized 1-butyl-3-methyl bromide imidazole and the kaolin / methyl alcohol intercalated composite to carry out intercalating reaction in room-temperature and atmospheric environment so as to obtain a kaolin / 1-butyl-3-methyl bromide imidazole intercalated nanocomposite. Through the preparation method of the kaolin / 1-butyl-3-methyl bromide imidazole intercalated nanocomposite, imidazole ionic liquid carries out intercalating reaction with the kaolin / methyl alcohol intercalated composite under the room-temperature and atmospheric environment for the first time so as to obtain the kaolin / 1-butyl-3-methyl bromide imidazole intercalated nanocomposite; and the kaolin / 1-butyl-3-methyl bromide imidazole intercalated nanocomposite is integral in structure, stable in property, good in heat resistance, fluorescence property and ultraviolet absorbency.

Description

technical field [0001] The invention relates to a preparation method of a kaolin / 1-butyl-3-methylimidazole bromide intercalation nanocomposite material, belonging to the technical field of organic / inorganic nanocomposite synthesis. Background technique [0002] Kaolin is a typical layered silicate mineral, and its ideal chemical formula is Al 2 [(OH) 4 / Si 2 o 5 ], is made of [SiO 4 ] tetrahedral hexagonal network layer with [AlO 2 (OH) 4 ] Octahedral layers are formed by a 1:1 combination of layered structures that are periodically repeated in the c-axis direction. In [SiO 4 ] tetrahedron and [AlO 2 (OH) 4 ] In the unit layer composed of octahedra, all the [SiO 4 ] tetrahedral apices are all facing the same direction, pointing to [AlO 2 (OH) 4 ] octahedral, tetrahedral edges are oxygen atoms, and octahedral edges are hydroxyl groups. Due to the interaction of hydrogen bonds and van der Waals forces between crystal layers, overlapping layered stacks are formed, ...

Claims

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Application Information

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IPC IPC(8): C01B33/44C09K11/06B01J32/00
Inventor 王长娟吴秀玲王永钱严志飞孟大维张荔王君霞
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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