Diatomite/nano TS-1 titanium silicalite composite material with hierarchical porous structure and preparation method of diatomite/nano TS-1 titanium silicalite composite material

A technology of titanium silicalite and pore structure, which is applied in the field of diatomite/nano TS-1 titanium silicalite composite material and its preparation, and can solve the problems of low utilization efficiency of active components, high cost and energy consumption, and cumbersome steps , to achieve the effects of low cost, improved utilization efficiency, and simple and easy process

Inactive Publication Date: 2017-01-04
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The main purpose of the present invention is to overcome the problems of low utilization efficiency of the active components of traditional diatomite-based photocatalytic materials and the preparation of multi-level pore structur

Method used

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  • Diatomite/nano TS-1 titanium silicalite composite material with hierarchical porous structure and preparation method of diatomite/nano TS-1 titanium silicalite composite material
  • Diatomite/nano TS-1 titanium silicalite composite material with hierarchical porous structure and preparation method of diatomite/nano TS-1 titanium silicalite composite material
  • Diatomite/nano TS-1 titanium silicalite composite material with hierarchical porous structure and preparation method of diatomite/nano TS-1 titanium silicalite composite material

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Experimental program
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Effect test

Embodiment 1

[0030] 1. Pretreatment of electrical inversion on the surface of diatomite: According to the mass ratio of diatomite / polycationic electrolyte solution volume ratio of 1g / 80mL, take 1.5g of diatomite powder and add 120mL of 0.5% polydimethyldimethy In the allyl ammonium chloride electrolyte solution (the preparation method is to dissolve polydimethyldiallyl ammonium chloride in water so that the mass fraction is 0.5%), the above mixed solution is fully stirred at room temperature for 2 hours, Then, the solid-liquid separation is carried out by centrifugation, the obtained solid is dried to constant weight, and the surface-modified diatomite powder is obtained.

[0031]2. Preparation of diatomite / nano TS-1 titanium silicalite composite material: 1.5 g of the surface-modified diatomite powder obtained in step 1 was added to 52.5 mL of TS-1 titanium silicalite synthesis solution (TS-1 The titanium silicalite synthesis solution is obtained by mixing ethyl orthosilicate, tetrabutyl ...

Embodiment 2

[0039] 1. Pretreatment of electrical inversion on the surface of diatomite: According to the mass ratio of diatomite / polycationic electrolyte solution volume ratio of 1g / 50mL, take 1.5g of diatomite powder and add 75mL of polyquaternary ammonium salt electrolyte with a mass fraction of 1.0% In the solution (its preparation method is to dissolve the polyquaternium salt in water so that the final mass fraction is 1.0%), the above-mentioned mixed solution is fully stirred at room temperature for 2 hours, and then the solid-liquid separation is carried out by centrifugation, and the obtained solid is dried. to constant weight to obtain surface-modified diatomite powder.

[0040] 2. Preparation of diatomite / nano TS-1 titanium silicalite composite material: 1.5 g of the surface-modified diatomite powder obtained in step 1 was added to 22.5 mL of TS-1 titanium silicalite synthesis solution (TS-1 The titanium silicalite synthesis solution is obtained by mixing ethyl orthosilicate, tet...

Embodiment 3

[0044] 1. Pretreatment of electrical inversion on the surface of diatomite: According to the mass ratio of diatomite / polycationic electrolyte solution volume ratio of 1g / 80mL, take 1.5g of diatomite powder and add 120mL of chitosan electrolyte solution with a mass fraction of 0.5% (the preparation method is to dissolve chitosan in water so that the final mass fraction is 0.5%), fully stir the above mixed solution at room temperature for 10 hours, and then carry out solid-liquid separation by centrifugation, and the obtained solid is dried to constant Then, the surface-modified diatomite powder was obtained.

[0045] 2. Preparation of diatomite / nano TS-1 titanium silicalite composite material: 1.5 g of the surface-modified diatomite powder obtained in step 1 was added to 52.5 mL of TS-1 titanium silicalite synthesis solution (TS-1 The titanium silicalite synthesis solution is obtained by mixing ethyl orthosilicate, tetrabutyl titanate, tetrapropylammonium hydroxide, isopropanol...

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Abstract

The invention discloses a diatomite/nano TS-1 titanium silicalite composite material with a hierarchical porous structure and a preparation method of the diatomite/nano TS-1 titanium silicalite composite material. By adoption of the cheap diatomite as a carrier, nano TS-1 titanium silicalite is uniformly loaded on the surface of the diatomite by means of electrical property inversion, adsorption, nucleation and crystallization to obtain the diatomite/nano TS-1 titanium silicalite composite material with a hierarchical porous structure having macropores/mesopores/micropores, and the composite materials is large in specific surface area and total pore volume. By loading of the nano TS-1 titanium silicalite on the surface of the diatomite, problems of single pore structure and low specific surface area of the diatomite can be solved, the obtained composite materials is excellent in photocatalytic degradation of organic pollutants such as crystal violet, and application value of the diatomite in the field of catalysis is increased. In addition, the preparation method of the diatomite/nano TS-1 titanium silicalite composite material has advantages of technical simplicity and feasibility, low cost, low energy consumption and low pollution and has a promising industrial application prospect.

Description

[0001] Technical field: [0002] The invention belongs to the field of organic pollutant treatment, and in particular relates to a diatomite / nano TS-1 titanium silicalite composite material with a multi-level pore structure and a preparation method thereof. [0003] Background technique: [0004] Diatomite, as my country's dominant mineral resource, ranks second in the world in proven reserves. It is a biological sedimentary rock formed by the deposition and accumulation of the remains of diatom organisms (diatom shells). The main mineral composition is diatom opal, which belongs to A-type opal (Opal-A). The surface of diatomite is rich in macropores, with a wide range of pore size distribution (50-800nm), so it has excellent adsorption performance; As a filter aid, adsorption and thermal insulation materials, it is widely used in various fields of industry. In the environmental field, in addition to being used as an adsorbent material, diatomite can also be used as a catalyt...

Claims

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Application Information

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IPC IPC(8): B01J29/89B01J35/10B01J37/00
CPCB01J29/89B01J35/004B01J35/1019B01J35/1038B01J35/1057B01J35/1061B01J37/00
Inventor 刘冬袁巍巍袁鹏邓亮亮李军
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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