Preparation method of bentonite inorganic gel with photocatalysis activity

A technology of inorganic gel and bentonite, which is applied in chemical instruments and methods, catalysts for physical/chemical processes, treatment of dyed low-molecular-weight organic compounds, etc. Achieve the effect of overcoming easy reunion and expanding practicability

Active Publication Date: 2015-03-25
HAMI SHENTU NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Judging from the quantity of domestically produced bentonite, the supply and demand are basically balanced; however, for the production of organic bentonite and nano-bentonite related products that require a high level of technology, the required special equipment is not matched, the product quality is unstable, and the production cost is too high. Plaguing researchers, it has not developed greatly and is still mainly imported
In addition, with the improvement of consumers' awareness of environmental protection and decoration, traditional coatings can no longer meet the needs of consumers, and toxic and harmful gases such as formaldehyde produced by decoration pollution have become serious problems.

Method used

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  • Preparation method of bentonite inorganic gel with photocatalysis activity
  • Preparation method of bentonite inorganic gel with photocatalysis activity
  • Preparation method of bentonite inorganic gel with photocatalysis activity

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Example 1. The preparation method of bentonite inorganic gel with photocatalytic properties, the preparation method consists of the following steps: (1) Preparation of modified bentonite slurry: mix bentonite and surfactant in a mass ratio of 1:1, In the state of stirring, add petroleum ether or n-hexane and stir thoroughly for 20-60 minutes to make a modified bentonite slurry with a solid content of 5%;

[0022] (2) Preparation of two-phase precursor: use ethanol to prepare titanium tetrachloride into a solution with a concentration of 2%, then add sodium oleate and water, and the amount of sodium oleate added is 4 times the molar amount of titanium tetrachloride. The volume of water is 0.5 times the volume of ethanol, adjust the pH = 5 ~ 6.5, at 20 ~ 40 o The mixture is fully stirred for 0.5 to 3 hours at a temperature of C to obtain a two-phase precursor;

[0023] (3) Mix the modified bentonite slurry prepared in step (1) with the two-phase precursor prepared in ste...

Embodiment 2

[0024] Embodiment 2, the preparation method of bentonite inorganic gel with photocatalytic properties, the preparation method consists of the following steps: (1) preparation of modified bentonite slurry: mix bentonite and surfactant in a mass ratio of 1: 10, In the stirring state, add petroleum ether or n-hexane and stir thoroughly for 20-60 minutes to make a modified bentonite slurry with a solid content of 30%;

[0025] (2) Preparation of two-phase precursor: use ethanol to prepare titanium tetrachloride into a solution with a concentration of 10%, then add sodium oleate and water, and the amount of sodium oleate added is 4 times the molar amount of titanium tetrachloride, The volume of water is 0.5 times the volume of ethanol, adjust pH=5-6.5, at 20~40 o The mixture is fully stirred for 0.5 to 3 hours at a temperature of C to obtain a two-phase precursor;

[0026] (3) Mix the modified bentonite slurry prepared in step (1) with the two-phase precursor prepared in step (2) ...

Embodiment 3

[0027] Example 3, the preparation method of bentonite inorganic gel with photocatalytic properties, the preparation method consists of the following steps: (1) Preparation of modified bentonite slurry: mix bentonite and surfactant at a mass ratio of 1:5, In the stirring state, add petroleum ether or n-hexane and stir thoroughly for 20-60 minutes to make a modified bentonite slurry with a solid content of 25%;

[0028] (2) Preparation of two-phase precursor: use ethanol to prepare titanium tetrachloride into a solution with a concentration of 6%, then add sodium oleate and water, and the amount of sodium oleate added is 4 times the molar amount of titanium tetrachloride. The volume of water is 0.5 times the volume of ethanol, adjust the pH = 5 ~ 6.5, at 20 ~ 40 o The mixture is fully stirred for 0.5 to 3 hours at a temperature of C to obtain a two-phase precursor;

[0029] (3) Mix the modified bentonite slurry prepared in step (1) with the two-phase precursor prepared in step ...

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Abstract

The invention belongs to the technical field of chemical processes, and particularly relates to a preparation method of a bentonite inorganic gel with photocatalysis activity. The preparation method comprises the following steps: (1) preparing modified bentonite slurry; (2) preparing a diphase precursor; and (3) mixing and uniformly stirring the modified bentonite slurry prepared in the step (1) and the diphase precursor prepared in the step (2) till a mixed solution forms a transparent sol, drying, and then calcining through an air or argon atmosphere to obtain the bentonite inorganic gel. The preparation method disclosed by the invention can be used for modifying the hydrophilic bentonite into a hydrophobic material with the photocatalysis activity by utilizing a surface active agent and a modifying agent and applying the hydrophobic material to a green environment-friendly coating, can not only be used for overcoming the defects of easiness for agglomeration, low possibility in recycling and the like of a raw material, but also be used for thoroughly decomposing the toxic and harmful substances, namely formaldehyde and the like which are generated by environment-friendly decoration, thus enhancing the practicability.

Description

technical field [0001] The invention belongs to the technical field of chemical engineering, and in particular relates to a modification of bentonite and a preparation method of bentonite inorganic gel with photocatalytic activity. Background technique [0002] In recent decades, due to its abundant reserves, bentonite has been widely used. The application of it in my country alone has reached 24 fields, but the bentonite products consumed are basically low-end and middle-end products of montmorillonite. Judging from the quantity of domestically produced bentonite, the supply and demand are basically balanced; however, for the production of organic bentonite and nano-bentonite related products that require a high level of technology, the required special equipment is not matched, the product quality is unstable, and the production cost is too high. Plaguing researchers, it has not developed greatly and is still mainly imported. [0003] With the expansion of bentonite in e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/42C09C3/04C09C3/08B01J21/16B01J21/06
Inventor 宿新泰梁小玉唐智勇李志娟杨超周新江
Owner HAMI SHENTU NEW MATERIALS TECH CO LTD
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