Platinum nanoparticle loaded mesoporous zirconia nanotube composite material, preparation method and application thereof in continuous treatment of organic waste gas

A technology of mesoporous zirconia and composite materials, applied in chemical instruments and methods, separation methods, and separation of dispersed particles, can solve the problems of inability to expose active sites, insufficient specific surface area of ​​carriers, and uneven distribution of platinum nanoparticles. Achieve high-efficiency catalytic oxidation of organic waste gas, excellent performance in treating organic waste gas, and the effect of promoting catalytic performance

Active Publication Date: 2019-03-08
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In previous literature reports, the commonly used carriers are mainly alumina, zinc oxide, zeolite, TiO 2 , CeO 2 etc., but the distribution of platinum nanoparticles loaded on these carriers is uneven, and the specific surface area of ​​the carrier is insufficient to expose enough active sites for the reaction, so it is necessary to find a better carrier to load platinum nanoparticles

Method used

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  • Platinum nanoparticle loaded mesoporous zirconia nanotube composite material, preparation method and application thereof in continuous treatment of organic waste gas
  • Platinum nanoparticle loaded mesoporous zirconia nanotube composite material, preparation method and application thereof in continuous treatment of organic waste gas
  • Platinum nanoparticle loaded mesoporous zirconia nanotube composite material, preparation method and application thereof in continuous treatment of organic waste gas

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Effect test

Embodiment 1

[0044] Loading platinum nanoparticles mesoporous zirconia nanotubes, the specific steps are as follows:

[0045] Mix 4.00 g of P123, 130 ml of ultrapure water, 20 ml of concentrated hydrochloric acid and 8.32 g of tetraethyl orthosilicate, stir at 38°C for 24 hours, react with water at 110°C for 24 hours, filter with suction, wash and dry. The resulting precipitate was mixed with 120 ml of concentrated nitric acid (65wt%), 40 ml of H 2 o 2 Place in a 1-liter flask, reflux at 80°C for 3 hours, cool down naturally, and filter the mixture with suction to obtain a template agent, rinse with ultrapure water and ethanol several times until neutral, and dry at 50°C.

[0046] Prepare 10g / L of chloroplatinic acid (H 2 PtCl 6 •6H 2 O) solution and 1.07mol / L dilute hydrochloric acid, take 2.00 grams of template agent, 1.878 grams of zirconium oxychloride (ZrOCl 2 •8H 2 O), 3 milliliters of dilute hydrochloric acid and a certain amount (the amount of chloroplatinic acid solution tha...

Embodiment 2

[0049] The platinum nanoparticle-loaded mesoporous zirconia nanotubes were made into airgel and MOF-5 was modified on its surface. The specific steps are as follows:

[0050] Take 50 mg of graphene oxide, ultrasonically disperse it in 10 ml of ultrapure water, add a certain amount of catalyst (10 mg, 20 mg, 30 mg), after the dispersion is uniform, then add 100 mg of L-ascorbic acid, after the dissolution is complete , reacted in a water bath at 100°C for 30 minutes, then directly frozen at -40°C for 1 hour, took it out and bathed it in a water bath at 100°C for 8 hours, sucked out the excess water in the container with a straw after the reaction, and finally freeze-dried to obtain an airgel .

[0051] Carboxylation reaction is carried out on the prepared graphene airgel first. Soak the airgel in 1ml of KH550 (3-aminopropyltriethoxysilane) / 10ml of ethanol, place it on a shaker for 8 hours, then dissolve 0.50g of succinic anhydride in 10ml of DMF to prepare solution, use this ...

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PUM

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Abstract

The invention discloses a platinum nanoparticle loaded mesoporous zirconia nanotube composite material, a preparation method and application thereof in continuous treatment of organic waste gas. The preparation method includes: utilizing hydrothermal reaction, reflux, impregnation and calcining to generate platinum nanoparticle loaded mesoporous zirconia nanotube; well mixing the nanotube with H2O, graphene and L-ascorbic acid to synthesize graphene aerogel, and performing freeze-drying, surface carboxylation and surface modifying with a MOF material to obtain the composite material. The preparation method is simple in operation, and a circle including adsorption and catalysis of the organic waste gas can be formed; adsorption of MOF can increase momentary concentration of organic waste gas around a catalyst, so that reaction rate of the organic waste gas can be increased; the composite material prepared by the method has excellent performance in treating the organic waste gas and is highly conducive to industrial application.

Description

technical field [0001] The invention relates to the technical field of nanocomposite materials, in particular to a mesoporous zirconia nanotube composite material with a SBA-15-like structure loaded with platinum nanoparticles, a preparation method thereof, and an application in continuous treatment of organic waste gas. Background technique [0002] With the rapid development of technology and rapid industrialization in recent years, the discharge of organic waste gases such as formaldehyde, benzene, toluene, xylene, and n-hexane has seriously exceeded the standard, which has damaged the ecological environment and endangered human health. Sources of organic waste gases include transportation and many factories or industrial processes, including chemical, power and pharmaceutical plants, gas stations, oil refining, printing, shoemaking, food processing, automobiles, furniture and textile manufacturing, among others. At the same time, organic waste gas is also one of the impo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/42B01J35/02B01J35/04B01J35/10B01D53/86
CPCB01D53/86B01J23/42B01J35/0013B01J35/023B01J35/04B01J35/10
Inventor 路建美陈冬赟
Owner SUZHOU UNIV
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