A kind of copper-doped phosphomolybdic acid low-temperature denitrification catalyst and preparation method thereof

A technology of low-temperature denitrification and phosphomolybdic acid, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve problems such as poor ability, achieve the effect of increasing exposure, expanding application, and improving low-temperature denitrification activity

Active Publication Date: 2021-04-30
ANHUI UNIVERSITY OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome existing SCR low-temperature catalyst to resist SO 2 In order to solve the problem of poor water vapor ability, a copper-doped phosphomolybdic acid low-temperature denitrification catalyst and its preparation method are provided. The copper-doped phosphomolybdic acid low-temperature denitrification catalyst of the present invention can be used on the basis of ensuring low-temperature denitrification efficiency. on, making the catalyst resistant to SO 2 Enhanced ability with water vapor

Method used

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  • A kind of copper-doped phosphomolybdic acid low-temperature denitrification catalyst and preparation method thereof
  • A kind of copper-doped phosphomolybdic acid low-temperature denitrification catalyst and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Step 1: Preparation of Active Components

[0061] The first step, weigh 1g of phosphomolybdic acid, 0.005g of PEG (weighed according to 0.5% of the mass of phosphomolybdic acid) and 2g of copper nitrate (control the molar ratio of Cu and Mo to be 2:1) into a crucible, add 40ml of distilled water to dissolve , stirring at a constant speed on a magnetic stirrer for 1 hour, and controlling the stirring temperature to 25°C; the second step, drying the mixture in the first step on a magnetic stirrer at a constant speed, evaporating the water to dryness, and controlling the drying temperature to 85°C; The third step is to place the mixture in the second step into a drying oven for constant temperature drying, and the drying temperature is controlled to be 105°C; the fourth step is to put the mixture dried in the third step into a muffle furnace for calcination at 350°C for 3 hours, The active ingredient is obtained after cooling.

[0062] Step 2: Preparation of Catalyst

[...

Embodiment 2

[0065] Step 1: Preparation of Active Components

[0066] The first step, weigh 1g of phosphomolybdic acid, 0.005g of PEG (weighed by 0.5% of the mass of phosphomolybdic acid) and 4.7658g of copper nitrate (control the molar ratio of Cu and Mo to be 3:1) into the crucible, add 40ml of distilled water Dissolve, stir on a magnetic stirrer at a constant speed for 1 hour, and control the stirring temperature to 25°C; in the second step, dry the mixture in the first step on a magnetic stirrer at a constant speed, evaporate the water to dryness, and control the drying temperature to 85°C; In the third step, put the mixture in the second step into a drying oven to dry at a constant temperature, and control the drying temperature to 105°C; in the fourth step, put the dried mixture in the third step into a muffle furnace for calcination at 350°C for 3 hours , to obtain the active ingredient after cooling.

[0067] Step 2: Preparation of Catalyst

[0068] In the first step, weigh 0.3g ac...

Embodiment 3

[0070] Step 1: Preparation of Active Components

[0071] The first step, weigh 1g of phosphomolybdic acid, 0.005g PEG (weighed according to 0.5% of the mass of phosphomolybdic acid) and a certain amount of copper nitrate (control the molar ratio of Cu and Mo to be 4:1) and put them into the crucible, add 40ml of distilled water Dissolve, stir on a magnetic stirrer at a constant speed for 1 hour, and control the stirring temperature to 25°C; in the second step, dry the mixture in the first step on a magnetic stirrer at a constant speed, evaporate the water to dryness, and control the drying temperature to 85°C; In the third step, put the mixture in the second step into a drying oven to dry at a constant temperature, and control the drying temperature to 105°C; in the fourth step, put the dried mixture in the third step into a muffle furnace for calcination at 350°C for 3 hours , to obtain the active ingredient after cooling.

[0072] Step 2: Preparation of Catalyst

[0073] I...

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Abstract

The invention discloses a copper-doped phosphomolybdic acid low-temperature denitrification catalyst and a preparation method thereof, belonging to the technical field of air pollution control. A copper-doped phosphomolybdic acid low-temperature denitrification catalyst of the present invention, the catalyst adopts anatase TiO 2 As a carrier, the active component is composed of phosphomolybdic acid, copper nitrate, polyethylene glycol (PEG) and cetyltrimethylammonium bromide (CTAB); the preparation process of the catalyst is: phosphomolybdic acid, nitric acid Put copper, surfactant CTAB and PEG into the crucible to dissolve, dry, dry, and calcinate to obtain the active component, and then mix the active component with TiO 2 Put them together into a crucible filled with distilled water, stir, dry, dry, and calcinate to obtain a copper-doped phosphomolybdic acid low-temperature denitrification catalyst. Using the copper-doped phosphomolybdic acid low-temperature denitrification catalyst of the present invention can enhance the catalyst’s resistance to SO on the basis of ensuring the low-temperature denitrification efficiency 2 and water vapor capacity.

Description

technical field [0001] The invention relates to the technical field of air pollution control, and more specifically relates to a copper-doped phosphomolybdic acid low-temperature denitrification catalyst and a preparation method thereof. Background technique [0002] Industrial flue gas (coke oven flue gas, sintering flue gas, glass kiln flue gas, etc.) is currently nitrogen oxides (NO x ) main source. NO x It is a toxic gas that can irritate human eyes and respiratory system and form photochemical smog and acid rain and other environmental pollution. my country NO x The emission base is large. According to the data published in the Bulletin on the State of the Environment in China, in 2015 NO x The emissions were 18.519 million tons, of which industrial emissions were 11.809 million tons, accounting for more than 60% of the total. Among them, NO x The sum is close to 2 million tons, and the emissions should not be underestimated. Since the "Twelfth Five-Year Plan", re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/38B01J27/188B01J35/10B01D53/86B01D53/56
Inventor 贾勇蒋进顾明言夏勇军胡笳陈光龙红明吴胜华丁希楼
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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