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Preparation and application of supported ruthenium catalyst with crystal plane effect

A ruthenium catalyst and catalyst technology, applied in the field of air pollution control, can solve the problems that have not been reported in the preparation and performance research, and achieve the effect of low cost, good effect and broad application prospect

Active Publication Date: 2019-11-12
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, in the selective exposure of specific crystal facets of TiO 2 On the carrier, the preparation and performance research of the catalyst for the catalytic oxidation of chlorinated aromatic hydrocarbons prepared by supporting Ru has not been reported

Method used

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  • Preparation and application of supported ruthenium catalyst with crystal plane effect
  • Preparation and application of supported ruthenium catalyst with crystal plane effect
  • Preparation and application of supported ruthenium catalyst with crystal plane effect

Examples

Experimental program
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Effect test

Embodiment 1

[0025] 1) Catalyst preparation

[0026] Add 20mL of butyl titanate to a reaction kettle containing 12mL of HF (24wt.%) solution, stir magnetically for 30min, and react at 200°C for 24h; after the reaction, cool the reaction kettle to room temperature, and wash it alternately with deionized water and absolute ethanol The reaction product was dried at 80°C for 12h; then calcined at 300°C for 2h in a nitrogen atmosphere to obtain TiO with preferentially exposed (001) crystal face 2 Carrier; Take 2.6235g RuCl 3 (1wt.%) solution to 20mL, dropwise added to 1g TiO 2 Suspended with 50 mL of deionized water and stirred at room temperature for 24 h, then dried at 60 °C to remove water, wherein the molar percentage of Ru / (Ru+Ti) was 1%; the recovered solid was added to 50 mL of NaBH 4 (0.4mol / L) ethanol solution and stirred until the bubbles stopped; after the reaction, the product was washed with 1mol / L ammonia solution and 60°C deionized water until the pH value of the filtrate reach...

Embodiment 2

[0034] 1) Catalyst preparation

[0035] Add 20mL of butyl titanate to a reaction kettle containing 12mL of HF (24wt.%) solution, stir magnetically for 30min, and react at 200°C for 24h; after the reaction, cool the reaction kettle to room temperature, and wash it alternately with deionized water and absolute ethanol The reaction product was dried at 80°C for 12h; then calcined at 350°C under nitrogen atmosphere for 3h to obtain TiO with preferentially exposed (001) crystal face 2 Carrier; Take 2.3587g RuCl 3 (1wt.%) solution to 20mL, dropwise added to 1g TiO 2 Suspension with 50 mL of deionized water and stirred at room temperature for 24 h, then removed the water at 60 °C, wherein the molar percentage of Ru / (Ru+Ti) was 0.9%; the recovered solid was added to 45 mL of NaBH 4 (0.2mol / L) ethanol solution and stirred until the bubbles stopped; after the reaction, the product was washed with 1mol / L ammonia solution and 60°C deionized water until the pH value of the filtrate reach...

Embodiment 3

[0043] 1) Catalyst preparation

[0044] Add 20mL of butyl titanate to a reaction kettle containing 8mL HF (24wt.%) solution, stir magnetically for 30min, and react at 200°C for 24h; The reaction product was washed and dried at 80°C for 12h; then calcined for 2h at 450°C under a nitrogen atmosphere to obtain TiO with preferentially exposed (001) crystal face 2 Carrier; Take 2.6235g RuCl 3 (1wt.%) solution to 20mL, dropwise added to 1g TiO 2 Suspension with 50 mL of deionized water and stirred at room temperature for 24 h, then removed the water at 60 °C, wherein the molar percentage of Ru / (Ru+Ti) was 1%; the recovered solid was added to 40 mL of NaBH 4 (0.1mol / L) in the ethanol solution and stirred until the bubbles stopped; after the reaction, the product was washed with 1mol / L ammonia solution and 60°C deionized water until the pH value of the filtrate reached 7; finally dried at 80°C for 12h to obtain (001 ) face-dominated Ru / TiO 2 Catalyst, where Ru 0 / (Ru 0 +RuO x )...

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Abstract

The invention relates to preparation and application of a supported ruthenium catalyst with a crystal plane effect. The preparation method comprises the following steps: firstly, preparing a TiO2 carrier exposing a specific (001) crystal plane, then regulating and controlling the falling position of Ru on a TiO2 (001) crystal plane, and assembling and generating a Ru / TiO2 catalyst with a functionalized nano structure by utilizing strong interaction of Ru and the carrier. The prepared Ru / TiO2 catalyst can be applied to degradation of chlorinated aromatic hydrocarbon pollutants and has low-temperature high-efficiency catalytic oxidation reaction activity of chlorinated aromatic hydrocarbons. The catalyst prepared by the invention can realize high-efficiency catalytic degradation of the chlorinated aromatic hydrocarbons under the condition of low temperature (100-200 DEG C) by utilizing strong interaction of Ru and the TiO2 (001) crystal plane.

Description

technical field [0001] The invention belongs to the field of air pollution control, and in particular relates to the preparation of a supported ruthenium catalyst with crystal plane effect and the performance of low-temperature degradation of chlorinated aromatic hydrocarbons. Background technique [0002] The chlorinated aromatic hydrocarbons in the incineration flue gas are highly toxic, persistent and bioaccumulative, and have serious harm to the ecological environment and human health. At present, the technologies for treating chlorinated aromatics pollutants in incineration flue gas mainly include adsorption method and catalytic oxidation method. Among them, the catalytic oxidation method is considered to be the most promising method for removing chlorinated aromatics pollutants because of its advantages such as low combustion temperature, complete mineralization of products and good safety. The key to the catalytic oxidation method lies in the development of high-effi...

Claims

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Application Information

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IPC IPC(8): B01J23/46B01J37/08B01J37/16B01D53/86B01D53/70B82Y30/00B82Y40/00
CPCB01D53/8662B01D2257/2064B01J23/462B01J37/082B01J37/16B82Y30/00B82Y40/00Y02C20/30
Inventor 马小东
Owner HEBEI UNIV OF TECH
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