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Ti/13X/MCM-41 composite material

A technology of MCM-41 and composite materials, applied in chemical/physical processes, physical/chemical process catalysts, molecular sieve catalysts, etc.

Inactive Publication Date: 2008-02-20
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there has been no research on this type of photocatalyst using microporous / mesoporous composite molecular sieves to support semiconductors at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] First, add 2g 13X molecular sieve into 20mL NaOH solution, stir magnetically at room temperature for 30min, then add silica gel according to Si / Al=8, continue stirring for 30min to make solution A, weigh 4.44g cetyltrimethylammonium bromide , dissolved in 40ml of water, heated and stirred until transparent to make a 10% mass fraction of CTAB solution, added the solution to solution A and continued magnetic stirring at room temperature for 30 minutes to prepare 13X / MCM-41 composite molecular sieve colloid, and then press Ti / Si=0.01 Add tetrabutyl titanate, stir magnetically at room temperature for about 2 hours, after forming a colloid, adjust its pH value to 10.5, move it into a water bath and react at 80°C for 24 hours, wash the product with deionized water, and filter it with a vacuum pump Afterwards, dry at 105°C overnight, and then bake at 200°C for 4 hours to obtain Ti / 13X / MCM-41 composite material.

[0017] The Ti / 13X / MCM-41 composite material was used to catalyz...

Embodiment 2

[0019] First, add 2g 13X molecular sieve into 20mL NaOH solution, stir magnetically at room temperature for 30min, then add silica gel according to Si / Al=10, continue stirring for 30min to make solution A, weigh 4.44g hexadecyltrimethylammonium bromide , dissolved in 40ml of water, heated and stirred until transparent to make a 10% mass fraction of CTAB solution, added the solution to solution A and continued magnetic stirring at room temperature for 30 minutes to prepare 13X / MCM-41 composite molecular sieve colloid, and then press Ti / Si=0.05 Add tetrabutyl titanate, stir magnetically at room temperature for about 2 hours, after forming a colloid, adjust its pH value to 10.5, move it into a water bath and react at 100°C for 48 hours, wash the product with deionized water, and filter it with a vacuum pump Afterwards, dry at 105°C overnight, and then bake at 300°C for 4 hours to obtain Ti / 13X / MCM-41 composite material.

[0020] The Ti / 13X / MCM-41 composite material was used to c...

Embodiment 3

[0022] First, add 2g 13X molecular sieve into 20mL NaOH solution, stir magnetically at room temperature for 30min, then add silica gel according to Si / Al=12, continue stirring for 30min to make solution A, weigh 4.44g cetyltrimethylammonium bromide , dissolved in 40ml of water, heated and stirred until transparent to make a 10% mass fraction of CTAB solution, added the solution to solution A and continued magnetic stirring at room temperature for 30 minutes to prepare 13X / MCM-41 composite molecular sieve colloid, and then press Ti / Si=0.10 Add tetrabutyl titanate, stir magnetically at room temperature for about 2 hours, after forming a colloid, adjust its pH value to 10.5, move it into a water bath and react at 120°C for 60 hours, wash the product with deionized water, and filter it with a vacuum pump Afterwards, dry at 105°C overnight, and then bake at 400°C for 4 hours to obtain Ti / 13X / MCM-41 composite material.

[0023] The Ti / 13X / MCM-41 composite material was used to catal...

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PUM

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Abstract

The invention relates to a compound material which takes the micro compound molecular sieve as the carrier and carries the semiconductor element, the preparing method and the application as a light catalyst. In order to overcome the limitations of the micro molecular sieve and the mesoporous molecular sieve, the invention relates to a Ti / 13X / MCM-41 compound material which takes the micro and mesoporous compound molecular sieve as the carrier combined with the absorbing effect of the molecular sieve and the light catalyst effect of the semiconductor together. The invention adopts the water heating method to compound the Ti / 13X / MCM-41. The compound material is the light catalyst for purifying the sewage. The compound material Ti / 13X / MCM-41 of zero point one g / L is used for removing the organic contamination bisphenol A which is hard to be deteriorated; the invention can make the one thousand ppb bisphenol A reduce to one ppb under the common light shine for five hours, and if under the sun shine the invention reduces to one ppb after one hour.

Description

technical field [0001] The invention relates to a novel photocatalyst which uses micro / mesoporous composite molecular sieve as a carrier and supports semiconductor elements, its preparation method and its application as a catalyst. Background technique [0002] The photocatalytic technology developed with the help of nanomaterial technology provides new opportunities for the thorough purification of refractory organic pollutants. where TiO 2 It is favored by people for its high activity, good thermal stability, long duration, low price, and harmless to human body, and has become the most valued photocatalyst. But nano TiO 2 The particles are so small that it is easy to cause waste with water loss in the process of wastewater treatment, and it is difficult to recycle. Therefore, using molecular sieves as carriers and loading TiO 2 The catalyst gradually takes its place. [0003] In semiconductor-molecular sieve photocatalysts, molecular sieves used as carriers are genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/80B01J21/06
Inventor 陶红郝思秋周仕林王璐刘静
Owner UNIV OF SHANGHAI FOR SCI & TECH
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