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Metal oxide/HTS-1 titanium silicalite molecular sieve catalyst and preparation method and application thereof

A titanium-silicon molecular sieve and catalyst technology, which is applied in the field of metal oxide/HST-1 titanium-silicon molecular sieve and its preparation, can solve the problems of short service life, unstable performance, low catalyst activity, etc., so as to improve the activity and service life, Good void ratio and specific surface area, uniform distribution effect

Inactive Publication Date: 2018-12-21
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to provide a metal oxide / HST-1 titanium-silicon molecular sieve and its preparation method and application, aiming to solve the problem of low activity, unstable performance and short service life of existing catalytic oxidation degradation VOC catalysts The problem

Method used

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  • Metal oxide/HTS-1 titanium silicalite molecular sieve catalyst and preparation method and application thereof
  • Metal oxide/HTS-1 titanium silicalite molecular sieve catalyst and preparation method and application thereof
  • Metal oxide/HTS-1 titanium silicalite molecular sieve catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of preparation method of metal oxide / HTS-1 titanium silicon molecular sieve catalyst:

[0043] Step 1, by molar ratio Cu:Mn:Nd=0.9:2:0.1, Mn 2+ Concentration is 1.4mol / L as the benchmark, weigh Cu(NO 3 ) 2 ·3H 2 O (99.5%) 15.2973g, Mn (NO 3 ) 2 (50%w / w) 50.1060g, Nd(NO 3 ) 3 ·6H 2 O (99%) 3.0995g, join in the beaker that fills 100mL distilled water, obtain metal nitrate solution;

[0044] Step 2. Immerse 2.1 g of HTS-1 titanium-silicon molecular sieves in the metal nitrate solution, rotate at 50 r / min, stir at a constant temperature of 35°C for 24 hours, and alternately wash and filter the impregnated solid-liquid mixture with ethanol and deionized water for 2 ~3 times, put the obtained solid into a blast drying oven, dry at 60°C for 300min, grind the obtained solid into powder, heat up to 550°C for 180min in a muffle furnace at a heating rate of 3°C / min, and then cool down naturally. get the primary catalyst;

[0045] Step 3, place the primary catalyst...

Embodiment 2

[0051] A kind of preparation method of metal oxide / HTS-1 titanium silicon molecular sieve catalyst:

[0052] Step 1, by molar ratio Cu:Mn:Nd=0.8:2:0.2, Mn 2+ Concentration is 1.4mol / L as a benchmark, weigh Cu(NO 3 ) 2 ·3H 2 O (99.5%) 13.5976g, Mn (NO 3 ) 2 (50%w / w) 50.1060g, Nd(NO 3 ) 3 ·6H 2 O (99%) 6.1990g joins in the beaker of 100mL distilled water, obtains metal nitrate solution;

[0053] Step 2. Immerse 2.1 g of HTS-1 titanium-silicon molecular sieves in the metal nitrate solution at a speed of 50 r / min, and stir at a constant temperature of 35°C for 1080 min. Alternately wash and filter the impregnated solid-liquid mixture with ethanol and deionized water 2 ~ 3 times, the obtained solid was put into a blast drying oven, dried at 60°C for 500min, the obtained solid was ground into powder, roasted for 180min at a heating rate of 4°C / min at 540°C in a muffle furnace, and cooled naturally to obtain primary catalyst;

[0054] Step 3. Place the primary catalyst in t...

Embodiment 3

[0060] A kind of preparation method of metal oxide / HTS-1 titanium silicon molecular sieve catalyst:

[0061] Step 1, by molar ratio Cu:Mn:Sm=0.7:2:0.3, Mn 2+ Concentration is 1.4mol / L as a benchmark, weigh Cu(NO 3 ) 2 ·3H 2 O (99.5%) 11.8979g, Mn (NO 3 ) 2 (50%w / w) 50.1060g, Sm(NO 3 ) 3 (99%) 7.1351g, join in the beaker of 100mL distilled water, obtain metal nitrate solution;

[0062] Step 2. Immerse 2.1 g of HTS-1 titanium-silicon molecular sieves in the metal nitrate solution, rotate at 50 r / min, stir at a constant temperature of 35°C for 1200 min, and alternately wash and filter the impregnated solid-liquid mixture with ethanol and deionized water for 2 ~3 times, put the obtained solid into a blast drying oven, dry at 60°C for 400 minutes, grind the obtained solid into powder in a muffle furnace at a heating rate of 3°C / min at 550°C, roast for 3 hours, and naturally cool down to obtain primary catalyst;

[0063] Step 3. Place the primary catalyst in the metal nitra...

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Abstract

The invention provides a metal oxide / HTS-1 titanium silicalite molecular sieve catalyst and a preparation method and application thereof. Transition metal element and rare-earth metal element co-dopedHTS-1 titanium silicalite molecular sieves are selected, and acidic sites of the catalyst can be effectively regulated and controlled through selecting different metal elements, controlling a ratio among the metal elements and reaction conditions; due to the doping of rare-earth elements, acidic sites of the prepared metal oxide / HTS-1 titanium silicalite molecular sieve catalyst can be more uniform in distribution; metal oxides are loaded to an HTS-1 carrier in the form of spinel, and the catalyst is endowed with the advantages of good catalytic activity and long service life due to a synergistic effect between the spinel structures and acidic sites of the HTS-1 titanium silicalite molecular sieves and a synergistic effect among three kinds of metal oxides.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to a metal oxide / HST-1 titanium-silicon molecular sieve and its preparation method and application. Background technique [0002] With the development of society and economy, air pollution has intensified, and volatile organic compounds (VOC) have caused serious damage to the socio-economic environment and residents' health. Therefore, both the state and local governments have attached great importance to air pollutants and VOCs, stepped up research on the status quo of VOC governance in various regions, and formulated a series of policies and standards for VOC control and emission reduction. [0003] At present, there are several methods commonly used to remove VOC: (1) VOC remover, which uses microporous substances and surfactants to generate difficult-to-volatile substances, and forms a thin film on the surface of the object to inhibit the volatilization of VOC. This...

Claims

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Application Information

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IPC IPC(8): B01J29/89B01D53/86B01D53/44
CPCB01D53/8687B01D2255/2063B01D2255/2065B01D2255/20707B01D2255/2073B01D2255/20738B01D2255/20746B01D2255/20753B01D2255/20761B01D2255/20784B01D2257/708B01J29/89
Inventor 牛建瑞刘浩彬钱恒力张亦媛段二红刘洁张龙
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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