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Composite modified montmorillonite photocatalysis material and preparation method thereof

A catalytic material and composite modification technology are applied in the field of composite modified montmorillonite photocatalytic materials and their preparation, which can solve the problems of fine nano-TiO2 particles, unfavorable catalyst regeneration, and difficulty in recycling, and achieve good dispersibility and environmental benefits. The effect of protection and energy saving

Inactive Publication Date: 2018-07-24
田东昊润新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of composite modified montmorillonite photocatalytic material and preparation method thereof, to solve the composite modified montmorillonite photocatalytic material and its preparation method on the market that the above-mentioned background technology proposes, the nanometer TiO of manufacture Particle Fine, not easy to disperse, and easy to lose during the photocatalytic process, difficult to recycle, and not conducive to catalyst regeneration

Method used

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preparation example Construction

[0020] The invention provides a technical solution: a composite modified montmorillonite photocatalytic material and its preparation method, including sodium montmorillonite, machine intercalation agent, butyl titanate alcohol solution, alkaline solution, zinc salt, distilled water and ethylene glycol, including the following process steps:

[0021] (1) Use ammonium salts of long-chain alkyl groups as organic intercalation agents to organically modify sodium-based montmorillonite to obtain organic pillared montmorillonite.

[0022] (2) Add the butyl titanate alcohol solution to the alkaline solution dropwise, stir and wash the intermediate obtained by centrifugation, add it to the nitric acid solution, stir to dissolve, add the organic montmorillonite suspension, filter the product, wash, dry, Grinding to obtain a modified organic montmorillonite loaded with nano-titanium dioxide between layers;

[0023] (3) The alkaline dispersion of modified organic montmorillonite obtained...

Embodiment 1

[0035] 1. Preparation of organic pillared montmorillonite

[0036] (1) Prepare a montmorillonite aqueous suspension with a mass fraction of 5%-30%;

[0037](2) Add cetyltrimethylammonium bromide as an organic intercalation agent to the montmorillonite suspension in (1), and the amount added is 1-3 times the cation exchange capacity of the montmorillonite;

[0038] (3) Stir the montmorillonite suspension at a constant temperature of 70-100°C for 0.5-2 hours;

[0039] (4) Filter the suspension obtained in (3), wash with water, and dry at 100-105°C for 2-5 hours;

[0040] (5) Grinding the dried powder obtained in (4) to obtain organic pillared montmorillonite.

[0041] 2. Preparation of modified organic montmorillonite loaded with nano-titanium dioxide between layers

[0042] (1) Take 10ml of butyl titanate, mix butyl titanate and absolute ethanol according to the volume ratio of 1:7-1:10, and obtain the ethanol solution of butyl titanate;

[0043] (2) Prepare 300ml of 1M sod...

example 2

[0061] The specific preparation method is as follows:

[0062] 1. Preparation of organic pillared montmorillonite

[0063] (1) Prepare a montmorillonite aqueous suspension with a mass fraction of 5%;

[0064] (2) Add cetyltrimethylammonium bromide as an organic intercalation agent to the montmorillonite suspension in (1), and the amount added is 1.5 times the cation exchange capacity of the montmorillonite;

[0065] (3) Stir and react the montmorillonite suspension at a constant temperature of 70°C for 2 hours;

[0066] (4) Filter the suspension obtained in (3), wash with water, and dry at 100°C for 3 hours;

[0067] (5) Grinding the dried powder obtained in (4) to obtain organic pillared montmorillonite.

[0068] 2. Preparation of modified organic montmorillonite loaded with nano-titanium dioxide between layers

[0069] (1) Take 10ml of butyl titanate, mix butyl titanate and absolute ethanol at a volume ratio of 1:7, and obtain an ethanol solution of butyl titanate;

[0...

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Abstract

The invention discloses a composite modified montmorillonite photocatalysis material and a preparation method thereof. The photocatalysis material comprises sodium montmorillonite, an organic intercalator, an alcohol solution of butyl titanate, an alkaline solution, a zinc salt, distilled water and ethylene glycol. The method comprises the following steps: organically modifying the sodium montmorillonite with a long-chain alkyl group ammonium salt as the organic intercalator to obtain organic pillared montmorillonite, dropwise adding the alcohol solution of butyl titanate to the alkaline solution, performing stirring and reacting to obtain an intermediate, centrifuging and washing the intermediate, adding the washed intermediate to a nitric acid solution, stirring the intermediate and thenitric acid solution to dissolve the intermediate, adding the above organic montmorillonite suspension, and filtering, washing, drying and milling the obtained product to obtain the nanometer titaniumdioxide interlayer-loaded modified organic montmorillonite. The method has the advantages of simplicity in operation, low cost, and realization of energy saving and environment protection through omitting high-temperature sintering and ball milling processes due to physical and chemical reactions involved in the whole preparation process being low-temperature reactions.

Description

technical field [0001] The invention relates to the technical field of montmorillonite photocatalytic materials and preparation methods thereof, in particular to a composite modified montmorillonite photocatalytic material and a preparation method thereof. Background technique [0002] Photocatalytic technology is particularly prominent in the field of environmental purification, especially in the field of organic wastewater pollution control. However, nano-titanium dioxide photocatalyst is a semiconductor material that can effectively degrade organic pollutants that are difficult to biodegrade in water. Due to the fineness of nano-TiO2 particles, It is not easy to disperse, and at the same time, it is easy to lose during the photocatalytic process, it is difficult to recycle, it is not conducive to the regeneration of the catalyst, and it brings certain difficulties in the actual implementation. A device that can overcome the easy agglomeration and poor stability of catalyst...

Claims

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Application Information

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IPC IPC(8): B01J31/02C02F1/30C02F101/20
CPCC02F1/30B01J31/0239C02F2305/10C02F2101/20B01J35/39
Inventor 陈世明林逢润陈悦颀林时锟林时锴张红雨陈巧慧陈亦恩
Owner 田东昊润新材料科技有限公司
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