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Gluconic acid montmorillonitenanoribbon and preparation method thereof

A technology of gluconic acid and montmorillonite, used in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., to achieve the effects of improving mechanical and mechanical properties, water resistance, length increase, and excellent performance

Active Publication Date: 2014-08-06
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic nanobelts are relatively easy to break, how to reduce the breakage of montmorillonite nanobelts in the process of montmorillonite purification, processing and stripping, and prepare longer montmorillonite nanobelts has not yet been published.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Put the bentonite ore that has not been pulverized into 20 times of water, soak for 24 hours, stir for 1 hour, after the stirring is completed, let it stand for 15 minutes, the suspension is divided into three layers, remove the upper and lower layers, and obtain the montmorillonite suspension; Let the montmorillonite suspension stand to separate the supernatant, add hydrochloric acid, control the liquid-solid ratio to 5, and make the hydrochloric acid concentration of the suspension reach 16%, then heat up to 85°C, stir for 3 hours, filter, and wash with water until the pH> 5. Filter and separate the water to obtain wet acidic montmorillonite; add water to disperse the wet acidic montmorillonite, control the amount of water so that the liquid-solid ratio is 13, and then evenly add 5 times the water in advance to digest and press dry acidic montmorillonite 10% calcium oxide of stone quality, the addition time is controlled in 2 hours, and filter obtains wet alkaline mont...

Embodiment 2

[0019] Put bentonite ore that has not been pulverized into 20 times of water, soak for 16 hours, stir for 1.5 hours, after the stirring is completed, let it stand for 20 minutes, the suspension is divided into three layers, remove the upper and lower layers, and obtain the montmorillonite suspension; Let the montmorillonite suspension stand to separate the supernatant, add sulfuric acid, control the liquid-solid ratio to 4, and make the sulfuric acid concentration of the suspension reach 24%, then heat up to 90°C, stir for 3.5 hours, filter, wash with water until the pH> 5. Filter and separate the water to obtain wet acidic montmorillonite; add water to disperse the wet acidic montmorillonite, control the amount of water so that the liquid-solid ratio is 13, and then evenly add 4 times the water to digest it in advance, press dry acidic montmorillonite 15% calcium hydroxide of stone quality, the time of adding is controlled at 2 hours, filters and obtains wet alkaline montmoril...

Embodiment 3

[0021] Put bentonite ore that has not been pulverized into 20 times of water, after soaking for 24 hours, stir for 0.5 hour, after the stirring is completed, let it stand for 15 minutes, the suspension is divided into three layers, remove the upper layer and the lower layer, and obtain the montmorillonite suspension; Let the montmorillonite suspension stand to separate the supernatant, add hydrochloric acid, control the liquid-solid ratio to 5, and make the hydrochloric acid concentration of the suspension reach 16%, then heat up to 85°C, stir for 3 hours, filter, and wash with water until the pH> 5. Filter and separate the water to obtain wet acid montmorillonite; add water to disperse the wet acid montmorillonite, control the amount of water so that the liquid-solid ratio is 15, and then evenly add 8 times the water to digest it in advance, press dry acid montmorillonite 20% calcium oxide of stone quality, the addition time is controlled in 2 hours, and filter obtains wet alk...

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PUM

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Abstract

The invention relates to a gluconic acid montmorillonitenanoribbon and a preparation method thereof. The gluconic acid montmorillonitenanoribbon is characterized in that bentonite, calcium hydroxide or calcium oxide and gluconic acid are taken as raw materials, sulfuric acid or hydrochloric acid and glycerin are taken as auxiliaries, and the bentonite is subjected to acid activation, base support and gluconic acid modification. The specific technology comprises steps as follows: the bentonite is dispersed in water and is purified through sedimentation, purified montmorillonite is subjected to mineral acid activation and calcium hydroxide support, then a gluconic acid aqueous solution is added and stirred for reaction; and a filter cake is obtained through filtering after the reaction and is washed by an aqueous ethyl alcohol solution and an absolute ethyl alcohol respectively, and room-temperature vacuum drying is performed to obtain the gluconic acid montmorillonitenanoribbon. According to the prepared gluconic acid montmorillonitenanoribbon, the thickness is smaller than 100 nm, the width ranges from 600 nm to2,000 nm, the length ranges from 30 mu m to70 mu m, and the organic ignition loss is 30%-40%.

Description

technical field [0001] The invention relates to a nano-bentonite and a preparation method thereof, in particular to a montmorillonite gluconate nanobelt and a preparation method thereof. Background technique [0002] The active ingredient of bentonite is montmorillonite, which is a layered material. The interlayer distance is between 1.2 and 2nm according to the size of the exchangeable ions between the layers. The thickness of the montmorillonite wafer is about 1nm. It is a natural However, to obtain usable nanomaterials by exfoliating layered wafers, certain techniques are required. Chinese Patent [Application (Patent) No.] ZL200810073451.2 discloses nano-gluconate montmorillonite and its preparation method, and uses gluconic acid to modify alkaline calcium-based bentonite, so that montmorillonite can be peeled off to obtain affinity with water-soluble polymer materials. The gluconate montmorillonite nanosheets with good compatibility have given the nanosheet size, the th...

Claims

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Application Information

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IPC IPC(8): C01B33/44
Inventor 韦藤幼张珂潘远凤童张法
Owner GUANGXI UNIV
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