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Vanadium-doped OMS-2 loaded TiO2 material as well as preparation method and application thereof

A technology of OMS-2 and V-OMS-2, applied in the field of CO reduction low-temperature denitrification catalyst V-OMS-2@TiO2 material and its preparation, can solve the problems of narrow activation temperature window and poor low temperature activity

Pending Publication Date: 2022-04-12
王俊英 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The most widely used denitrification technology is NH 3 Selective catalytic reduction (NH 3 -SCR), but there are problems such as poor low temperature activity and narrow activity temperature window

Method used

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  • Vanadium-doped OMS-2 loaded TiO2 material as well as preparation method and application thereof
  • Vanadium-doped OMS-2 loaded TiO2 material as well as preparation method and application thereof
  • Vanadium-doped OMS-2 loaded TiO2 material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] First, 1.5g of anatase TiO 2 Disperse in 30ml of deionized water to form solution A, take 0.32g of manganese acetate and 0.07g of sodium orthovanadate dissolved in 30ml of deionized water to form solution B, take 0.24g of potassium permanganate and dissolve in 30ml of deionized water to form For solution C, slowly pour solutions A and B into the polytetrafluoroethylene lining, then slowly pour solution C while stirring, seal the reaction vessel after stirring evenly, and put it in an oven at 120°C for 4 hours. The product obtained after the reaction was washed with deionized water and absolute ethanol and then centrifuged. The black product obtained by centrifugation was dried in an oven for 12 hours and then ground to obtain V-OMS-2(0.1)@TiO 2 sample.

[0037] Place 1g of catalyst in the center of a high-temperature-resistant quartz glass tube, and fix both sides of the catalyst with high-temperature quartz wool. The inner diameter of the quartz glass tube is 12mm and...

Embodiment 2

[0039] First, 1.5g of anatase TiO 2 Disperse in 30ml of deionized water to form solution A, take 0.97g of manganese acetate and 0.21g of sodium orthovanadate dissolved in 30ml of deionized water to form solution B, take 0.72g of potassium permanganate and dissolve in 30ml of deionized water to form For solution C, slowly pour solutions A and B into the polytetrafluoroethylene lining, then slowly pour solution C while stirring, seal the reaction vessel after stirring evenly, and put it in an oven at 120°C for 4 hours. The product obtained after the reaction was washed with deionized water and absolute ethanol and then centrifuged. The black product obtained by centrifugation was dried in an oven for 12 hours and then ground to obtain V-OMS-2(0.3)@TiO 2 sample.

[0040] Place 1g of catalyst in the center of a high-temperature-resistant quartz glass tube, and fix the catalyst with high-temperature quartz wool on both sides. The temperature of the tubular resistance furnace is co...

Embodiment 3

[0042] First, 1.5g of anatase TiO 2 Disperse in 30ml of deionized water to form solution A, take 1.62g of manganese acetate and 0.35g of sodium orthovanadate dissolved in 30ml of deionized water to form solution B, take 1.19g of potassium permanganate and dissolve in 30ml of deionized water to form For solution C, slowly pour solutions A and B into the polytetrafluoroethylene lining, then slowly pour solution C while stirring, seal the reaction vessel after stirring evenly, and put it in an oven at 120°C for 4 hours. The product obtained after the reaction was washed with deionized water and absolute ethanol and then centrifuged. The black product obtained by centrifugation was dried in an oven for 12 hours and then ground to obtain V-OMS-2(0.5)@TiO 2 sample.

[0043] Place 1g of catalyst in the center of a high-temperature-resistant quartz glass tube, and fix the catalyst with high-temperature quartz wool on both sides. The temperature of the tubular resistance furnace is co...

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Abstract

The invention discloses a vanadium-doped OMS-2 loaded TiO2 material as well as a preparation method and application thereof, titanium dioxide, a vanadium source, potassium permanganate and a manganese source are dispersed or dissolved in deionized water, and a product V-OMS-2 (at) TiO2 is formed through a hydrothermal method. The OMS-2 loaded TiO2 catalyst can catalyze two toxic gases of nitric oxide and carbon monoxide in flue gas to react at low temperature to generate two non-toxic gases of nitrogen and carbon dioxide, so that the purposes of low-temperature denitration and waste control by waste are achieved, the denitration rate can reach 80% or above at the temperature of 150 DEG C, the denitration rate can reach 90% or above at the temperature of 300 DEG C, and the denitration rate can reach 90% or above at the temperature of 300 DEG C. And the obtained catalyst material has sulfur dioxide resistance, and can maintain a denitration rate of 62.3% at 150 DEG C and a denitration rate of 87.8% at 300 DEG C in the presence of SO2.

Description

technical field [0001] The invention belongs to the technical field of denitration catalytic materials, and relates to a CO reduction low-temperature denitration catalyst V-OMS-2(x)@TiO 2 Materials and their preparation methods and applications. Background technique [0002] Nitrogen oxides (NO x ) are industrial exhaust and vehicle exhaust, and the burning of coal, diesel and gasoline. V 2 o 5 -WO 3 (MoO 3 ) / TiO 2 The three-way catalyst system can efficiently remove nitrogen oxides at a high temperature of 300-400 ° C, and has been widely used commercially. However, the catalyst has poor activity at low temperature (<300°C), narrow operating temperature window, toxic active components, and easy generation of N 2 O and other problems limit its further application. Therefore, finding a new type of low-temperature catalyst with high denitrification activity has become a research hotspot. [0003] The most widely used denitrification technology is NH 3 Selective c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/03B01J23/34B01D53/86B01D53/56
Inventor 王俊英何汉兵朱国辉王志刚董福权王锦程甄守才王铁明姜永钢王健张建亮
Owner 王俊英
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