Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

MnOOH nanorod denitration catalyst and preparation method thereof

A denitrification catalyst and nanorod technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problems of increased denitrification costs in power plants, short service life of catalysts, catalytic clogging and passivation, and achieve catalytic activity And the effect of enhanced selectivity, enhanced catalytic activity, and high safety

Inactive Publication Date: 2014-06-04
CHONGQING UNIV
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It directly leads to severe catalytic blockage and passivation, the service life of the catalyst is shorter than that of foreign countries, and the denitrification cost of the power plant is significantly increased
At the same time due to V 2 o 5 It is a highly toxic substance, after use V 2 o 5 cause great damage to the environment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • MnOOH nanorod denitration catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 1g of potassium permanganate and 20ml of N,N-dimethylformamide into an autoclave, and conduct a solvothermal reaction at a temperature of 100°C for 2h to obtain MnOOH nanorods. Take 1gCeO 2 Particles and 5ml of absolute ethanol were added to the reacted solution, and ultrasonically stirred for 3h to make the CeO 2 Fully loaded with MnOOH nanorods. Then, the reacted product was subjected to solid-liquid separation by centrifugation, and the separated solid was washed with distilled water and acetone in turn, and finally dried at 30°C for 1 hour to obtain the MnOOH nanorod denitration catalyst, MnOOH-CeO 2 Composite catalyst. The obtained final product was ground, and 0.2 g was taken for denitrification experiment.

[0026] Put 0.2g of the prepared catalyst into a quartz tube reactor for denitrification experiment. The flue gas reaction conditions are: the total gas flow rate is 1L / min, C O2= 4%, C CO2 =12%, N 2 =50ml, NH 3 =50ml, NH 3 / NO=1:1,N 2 As ...

Embodiment 2

[0028] Take 1g of potassium permanganate and 50ml of N,N-dimethylformamide into an autoclave, and conduct a solvothermal reaction at a temperature of 150°C for 2h to obtain MnOOH nanorods. Take 0.5gCeO 2 Particles and 2ml of absolute ethanol were added to the reacted solution, and ultrasonically stirred for 3.5h to make the CeO 2 Fully loaded with MnOOH nanorods. Then, the reacted product was subjected to solid-liquid separation by centrifugation, and the separated solid was washed with distilled water and acetone in sequence, and finally dried at 60°C for 2 hours to obtain the MnOOH nanorod denitration catalyst, MnOOH-CeO 2 Composite catalyst. The obtained final product was ground, and 0.2 g was taken for denitrification experiment.

[0029] Put 0.2g of the prepared catalyst into a quartz tube reactor for denitrification experiment. The flue gas reaction conditions are: the total gas flow rate is 1L / min, C O2= 4% , C CO2 =12%, N 2 =50ml, NH 3 =50ml, NH 3 / NO...

Embodiment 3

[0031] Take 1g of potassium permanganate and 75ml of N,N-dimethylformamide, put them into an autoclave, and conduct a solvothermal reaction at a temperature of 175°C for 4h to obtain MnOOH nanorods. Take 0.25gCeO 2 Particles and 1ml of absolute ethanol were added to the reacted solution, and ultrasonically stirred for 4h to make the CeO 2 Fully loaded with MnOOH nanorods. Then, the reacted product was subjected to solid-liquid separation by centrifugation, and the separated solid was washed with distilled water and acetone in turn, and finally dried at 80°C for 2.5 hours to obtain the MnOOH nanorod denitration catalyst, namely MnOOH-CeO2 Composite catalyst. The obtained final product was ground, and 0.2 g was taken for denitrification experiment.

[0032] Put 0.2g of the prepared catalyst into a quartz tube reactor for denitrification experiment. The flue gas reaction conditions are: the total gas flow rate is 1L / min, C O2= 4% , C CO2 =12%, N 2 =50ml, NH 3 =50m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Lengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a MnOOH nanorod denitration catalyst and a preparation method thereof. The catalyst comprises a MnOOH nanorod and CeO2 attached to the MnOOH nanorod. The preparation method comprises the following steps: carrying out a solvothermal reaction on potassium permanganate and N,N-dimethyl formamide at the temperature of 100-200 DEG C for 2-4 hours to obtain the MnOOH nanorod; adding absolute ethyl alcohol and nanometer CeO2 particles into the reacted solution, and ultrasonically stirring for 3-5 hours, so that the nanometer CeO2 particles are fully loaded to the MnOOH nanorod; and performing solid-liquid separation on the impregnated product, and washing and drying to obtain the MnOOH-CeO2 composite catalyst. The preparation method is simple in process and simple and convenient to operate, industrial production is conveniently realized, the catalyst does not have toxicity and is high in safety, and harm of the used catalyst to the environment is reduced.

Description

technical field [0001] The invention relates to the technical field of flue gas demercuration, and is used as a denitrification catalyst for coal-fired power plants, in particular to a MnOOH nanorod denitrification catalyst. Background technique [0002] The emission control of nitrogen oxides (NOx) from coal-fired power plants is a key task in the field of energy conservation and environmental protection during the country's "Twelfth Five-Year Plan" period. Formulated the most stringent control standard in the world (100mg / m 3 ). With the promulgation of these national policies, how to effectively control NOx emissions has become one of the important issues to be solved in the field of power environmental protection. [0003] At present, about 90% of the flue gas denitrification units under construction or proposed to use SCR denitrification and mercury removal technology. Catalyst is the core of SCR technology, the existing commercial catalyst is generally V 2 o 5 -WO...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J23/34B01D53/86B01D53/56
Inventor 孙健杨剑孟飞赵冬杨强孔明王铸
Owner CHONGQING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com