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Platinum-ruthenium bimetal loaded zirconia nanotube composite material and preparation method thereof and application in low-temperature thermocatalytic treatment of toluene

A bimetallic nanocomposite material technology, applied in the field of nanocomposite materials, can solve problems such as complex preparation methods, and achieve the effect of good repeatability, controllable structure and large specific surface area

Active Publication Date: 2020-01-17
苏州远尚环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Zirconia material is a kind of carrier material; however, the preparation methods for uniformly supporting metal nanoparticles on the surface of the existing technology are relatively complicated, and how to realize the catalyst to catalyze at low temperature, all of which need to be solved urgently

Method used

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  • Platinum-ruthenium bimetal loaded zirconia nanotube composite material and preparation method thereof and application in low-temperature thermocatalytic treatment of toluene
  • Platinum-ruthenium bimetal loaded zirconia nanotube composite material and preparation method thereof and application in low-temperature thermocatalytic treatment of toluene
  • Platinum-ruthenium bimetal loaded zirconia nanotube composite material and preparation method thereof and application in low-temperature thermocatalytic treatment of toluene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation of embodiment one zirconia nanotubes, concrete steps are as follows:

[0035] 4g polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer (P 123 ), 130ml of ultrapure water and 20ml of concentrated hydrochloric acid (37wt%) were fully stirred evenly, then slowly added 8.32g of tetraethyl orthosilicate, and stirred in a water bath at 38°C for 24 hours. Hydrothermal reaction at ℃ for 24 hours, naturally cooled to room temperature, suction-filtered and washed until neutral, dried at 80℃, after drying, placed in a 1L flask with 120ml concentrated nitric acid and 40ml hydrogen peroxide, and refluxed at 80℃ for 3h , cooling and suction filtration, washing with ultrapure water and ethanol several times until neutral, and drying at 50°C to obtain the product SBA-15-OH.

[0036] Stir and dissolve 0.5g of SBA-15-OH and 3ml of hydrochloric acid (1.07mol / l) at 50°C, then add 0.4695g of zirconium oxychloride octahydrate for sealed aging, first at...

Embodiment 2

[0038] Example 2 The preparation of a zirconia nanotube composite material loaded with platinum and ruthenium bimetallic nanoparticles, the specific steps are as follows:

[0039]The aqueous solution of 100mg zirconia nanotube and chloroplatinic acid, ruthenium trichloride (the molar ratio of chloroplatinic acid, ruthenium trichloride is 7: 3, and the molar sum of chloroplatinic acid, ruthenium trichloride is zirconia molar weight 1% of ) mixed, stirred under ultrasonic for 2h, then stirred and evaporated to remove the solvent, the temperature was 80 ℃; then the product was subjected to reduction treatment, carried out in a hydrogen atmosphere, the heating rate was 1 ℃ / min (room temperature to 400 ℃), the temperature is 400 ℃, and the time is 5h. Through calcination, the zirconia nanotube composite material loaded with platinum and ruthenium bimetallic nanoparticles with large specific surface area and uniform distribution of nanoparticles is obtained, in which platinum rutheni...

Embodiment 3

[0043] The thermocatalytic conditions of the zirconia nanotube composite material loaded with platinum and ruthenium bimetallic nanoparticles to toluene gas are: the concentration of toluene is 50 ppm, the amount of catalyst is 50 mg, and the catalyst is fixed in a fixed bed reactor through a U-shaped tube Above, the catalytic effect of the composite on toluene gas under heating conditions was analyzed by gas chromatography.

[0044] attached Figure 7 A graph showing the thermocatalytic effect of zirconia nanotube composites loaded with platinum and ruthenium bimetallic nanoparticles on toluene gas. attached by Figure 7 It can be seen that the present invention can be applied to the conversion of toluene at lower temperatures. Toluene pollution in the air mainly comes from building materials, interior decoration materials, living and office supplies, outdoor industrial waste gas, automobile exhaust, photochemical smog, etc. The specific catalytic effect of toluene is analy...

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Abstract

The invention discloses a platinum-ruthenium bimetal loaded zirconia nanotube composite material and a preparation method thereof and application in a thermocatalytic treatment of toluene. A SBA-15-OHmolecular sieve is taken as a template, zirconium oxychloride octahydrate is taken as a metal precursor, and a zirconia nanotube material is prepared through aging, calcination and etching; a certainamount of zirconia is taken as a carrier, and a certain amount of metal precursors such as chloroplatinic acid and ruthenium trichloride are added, and through ultrasonic stirring, a solvent is stirred for thermal evaporation and hydrogen reduction calcination is carried out to obtain a certain proportion of the platinum-ruthenium bimetal loaded zirconia nanotube composite material. The platinum-ruthenium bimetal loaded zirconia nanotube composite material synthesized through a series of steps has a good thermal catalytic effect on toluene gas, complete catalysis of low-concentration tolueneat a lower temperature can be achieved, and great research significance and certain application prospects for solving the toluene pollution gas in the air environment are achieved

Description

technical field [0001] The invention relates to the technical field of nanocomposite materials, in particular to a zirconia nanotube composite material loaded with platinum and ruthenium bimetallic nanoparticles, a preparation method thereof, and an application in low-temperature thermocatalytic treatment of toluene. Background technique [0002] With the rapid development of technology and industrialization in recent years, the emission of toxic volatile organic compounds such as benzene, toluene, and formaldehyde has seriously exceeded the standard, and its indoor sources are extensive, seriously endangering human health. Toluene is one of the common indoor volatile organic compounds. The emission of toluene gas mainly comes from building materials, interior decoration materials, living and office supplies; incomplete combustion of household fuel and tobacco leaves, human excrement; outdoor industrial waste gas, automobile exhaust, photochemical Smog, etc., are very harmfu...

Claims

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Application Information

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IPC IPC(8): B01J23/46B01J35/10B01D53/86B01D53/72
CPCB01J23/462B01D53/864B01D2257/7027B01J35/61
Inventor 路建美陈冬赟蒋军
Owner 苏州远尚环保有限公司
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