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Modified attapulgite nano particles and preparation method thereof

A technology of attapulgite and nano-particles, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problem that attapulgite cannot be stably dispersed, and achieve improved dispersibility, good dispersibility, and preparation method simple effect

Active Publication Date: 2016-10-12
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the attapulgite modified by these conventional methods cannot be stabilized and dispersed on the surface of the aqueous phase system in a suspended form.

Method used

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  • Modified attapulgite nano particles and preparation method thereof
  • Modified attapulgite nano particles and preparation method thereof
  • Modified attapulgite nano particles and preparation method thereof

Examples

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preparation example Construction

[0017] A preparation method of modified attapulgite nanoparticles provided in the examples of the present application includes:

[0018] Activating the attapulgite with an acid solution to obtain acid-activated attapulgite;

[0019] The acid-activated attapulgite is subjected to surface modification treatment with a surface modifier to obtain the modified attapulgite.

[0020] In some embodiments, the preparation method comprises:

[0021] The surface of the attapulgite is acid-activated with an acid solution to obtain acid-activated attapulgite;

[0022] The acid-activated attapulgite and the surface modifying agent are uniformly mixed in an organic solvent to form a uniform dispersion liquid, and after sufficient reaction, modified attapulgite nanoparticles are obtained, and the surface modifying agent is selected from the group containing lipophilic group silane coupling agent.

[0023] In some preferred embodiments, the preparation method further includes: dispersing at...

Embodiment 1

[0041] Example 1: Disperse a certain amount of attapulgite clay in a hydrochloric acid solution with a pH value of 2, stir to disperse it, the concentration of attapulgite clay is 10g / L, react at 60°C for 10h, separate and wash to obtain acid activation Attapulgite; add a certain amount of acid-activated attapulgite and diphenylsilane into n-hexane, so that the concentration of attapulgite is 10g / L, and the concentration of methyl-triethoxysilane is 2g / L , and fully dispersed, reacted at 60°C for 10 hours, separated the product, and washed several times to obtain modified attapulgite nanoparticles, which are powder materials and can be stably suspended on the water surface.

Embodiment 2

[0042] Example 2: Disperse a certain amount of attapulgite clay in a sulfuric acid solution with a pH value of 1, stir to disperse it, wherein the concentration of attapulgite is 20g / L, react at 70°C for 8h, separate and wash to obtain Acid-activated attapulgite; add acid-activated attapulgite and phenyltrichlorosilane into n-hexane, so that the concentration of attapulgite is 20g / L, and the concentration of vinyl-triethoxysilane is 3g / L , and fully dispersed, and reacted at 60° C. for 12 hours; after the product was separated, it was washed several times to obtain modified attapulgite nanoparticles, which can be stably suspended on the water surface.

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Abstract

The invention discloses modified attapulgite nano particles and a preparation method thereof. The preparation method comprises the steps that the surface of attapulgite is activated through an acid solution, and acid-activated attapulgite is obtained; the acid-activated attapulgite and a surface modifier are evenly mixed in an organic solvent to form an even dispersion solution, and after a sufficient reaction, the modified attapulgite nano particles are obtained. The surface modifier can preferentially be a silane coupling agent containing a lipophilicity group. According to the preparation method of the modified attapulgite nano particles, the process is simple, conditions are controllable, dispersity between crystals of the attapulgite can be greatly improved under the condition of preserving the original feature of the attapulgite, and compared with conventional modified attapulgite, the obtained modified attapulgite nano particles has good dispersity in the organic solvent and can also be stably suspended on the surface of a water phase system.

Description

technical field [0001] The invention specifically relates to a modified attapulgite nanoparticle and a preparation method thereof, and the modified attapulgite nanoparticle can be stably suspended on the water surface. Background technique [0002] Attapulgite (abbreviated as ATP) is a layer chain structure of hydrous magnesium-aluminosilicate clay minerals, its crystals are needle-like and fibrous aggregates, the diameter of a single fiber crystal is about 30nm, and the length can reach several A micron is a natural one-dimensional nanomaterial, which is very rich in reserves in my country, and has the advantages of non-toxic, tasteless, non-irritating, chemically stable, easy to dry, and low hardness. Attapulgite is often used in polymer filling materials and adsorbent materials, etc. However, when it is used in adsorbent materials, in order to improve its adsorption effect on organic dye molecules, it needs to be organically modified. CN 104028211 A mentions that the surf...

Claims

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Application Information

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IPC IPC(8): C01B33/40
CPCC01B33/40C01P2004/01C01P2004/16
Inventor 邹挺刘丰华许高杰朱丁纯江圣龙
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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