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Molecular sieve material loaded with bismuth titanate photocatalyst and preparation method of molecular sieve material

A technology of photocatalyst and molecular sieve, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., and can solve the problems of limited application and poor adsorption capacity

Inactive Publication Date: 2015-01-28
SHENYANG LIGONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although perovskite bismuth titanate has excellent photocatalytic activity, its poor adsorption capacity limits its further application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method of a molecular sieve material loaded with bismuth titanate photocatalyst, comprising the following process steps:

[0018] (1) Ion exchange of molecular sieves by hydrochloric acid treatment

[0019] Put 80g of NaY, NaX or NaZSM-5 molecular sieves and 500mL of 0.3mol / L hydrochloric acid solution in a 1L four-necked flask, heat and cool with water-cooled reflux. H at 90-95 °C + -Na + After ion exchange for 4 hours, the solution was filtered by suction filtration. The obtained filter cake was dried in an electric drying oven at 100-120 °C for 4 h, and then placed in a program-controlled box-type electric furnace for calcination at 550 °C for 4 h to obtain HY, HX and HZSM-5 molecular sieves.

[0020] (2) Sol-gel synthesis of supported bismuth titanate photocatalyst

[0021] Add 0.85 mL of tetrabutyl titanate dropwise into 8 mL of absolute ethanol, and stir evenly for 30 min to prepare liquid A. Weigh 1.6175 g of bismuth nitrate and dissolve it in ...

Embodiment 2

[0023] (1) Ion exchange of molecular sieves by hydrochloric acid treatment

[0024] Put 80g of NaY, NaX or NaZSM-5 molecular sieves and 500mL of 0.5mol / L hydrochloric acid solution in a 1L four-neck flask, heat and cool with water-cooled reflux. H at 90-95 °C + -Na + After ion exchange for 4 hours, the solution was filtered by suction filtration. The obtained filter cake was dried in an electric drying oven at 100-120 °C for 4 h, and then placed in a program-controlled box-type electric furnace for calcination at 550 °C for 4 h to obtain HY, HX and HZSM-5 molecular sieves.

[0025] (2) Sol-gel synthesis of supported bismuth titanate photocatalyst

[0026] Add 0.85 mL of tetrabutyl titanate dropwise into 8 mL of absolute ethanol, and stir evenly for 30 min to prepare liquid A. Weigh 1.6175 g of bismuth nitrate and dissolve it in 8 mL of distilled water, add 8 mL of glacial acetic acid, and transfer to a water bath at 40 °C until the milky white solution becomes clear to pr...

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PUM

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Abstract

The invention discloses a molecular sieve material loaded with a bismuth titanate photocatalyst and a preparation method of the molecular sieve material. The method is characterized by comprising the following steps: loading the bismuth titanate photocatalyst on a molecular sieve subjected to ion exchange with hydrochloric acid by a sol-gel method. According to organic matter adsorbed by the molecular sieve material disclosed by the invention, free active genes can be easily obtained, so that the catalyst activity is improved.

Description

technical field [0001] The invention relates to a functional material for environmental purification, which is a loaded bismuth titanate photocatalyst synthesized on a molecular sieve carrier exchanged with hydrochloric acid by a sol-gel method. Background technique [0002] Catalyst immobilization technology and carrier selection have become a very critical issue in photocatalytic technology. The immobilization of photocatalysts can effectively solve the problems of catalyst separation, recovery, and regeneration difficulties. The loading of photocatalysts includes two aspects: the first is to form a photocatalyst film material on the inner wall of the reactor or on a flat carrier; photocatalyst immobilized on the support. The characteristics of these carriers are: good adsorption performance, large specific surface area, easy to settle or float. [0003] Molecular sieve is a kind of aluminosilicate, which uses silicon-oxygen tetrahedron as the basic structural unit, and...

Claims

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Application Information

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IPC IPC(8): B01J29/80
Inventor 张文杰
Owner SHENYANG LIGONG UNIV
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