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

Manganese-based denitration catalyst containing tourmaline and preparation method of manganese-based denitration catalyst

The technology of denitration catalyst and tourmaline is applied in the field of low temperature flue gas denitration, which can solve the problems of large specific surface area, low sulfur resistance and water resistance, and achieves simple preparation process, reduced catalyst cost, and high resistance to SO2 and H2O poisoning performance. Effect

Inactive Publication Date: 2017-08-18
HEBEI UNIV OF TECH
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention utilizes the advantage of large specific surface area of ​​KIT-6 mesoporous molecular sieve, and the characteristics of spontaneous polarity and infrared radiation of ferro-tourmaline to prepare a manganese-based low-temperature denitration catalyst containing tourmaline with high sulfur resistance and water resistance. To solve the problem of low sulfur and water resistance of existing manganese-based denitrification catalysts

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
  • Manganese-based denitration catalyst containing tourmaline and preparation method of manganese-based denitration catalyst
  • Manganese-based denitration catalyst containing tourmaline and preparation method of manganese-based denitration catalyst
  • Manganese-based denitration catalyst containing tourmaline and preparation method of manganese-based denitration catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034]Manganese acetate (Mn(CH 3 COO) 2 4H 2 O) 2.451g and cobalt nitrate (Co(NO 3 ) 2 ·6H 2 (O) 2.911g is dissolved in 25ml deionized water to obtain a mixed solution, the mol ratio of Mn and Co is 1:1, the molar concentration of manganese acetate is 0.4mol / L, and the molar concentration of cobalt nitrate is 0.4mol / L, at room temperature Magnetically stir for 2 hours to mix the solution evenly, then drop the mixed salt solution into the beaker with 10g of dry KIT-6 (after testing, the saturated water absorption of 10g carrier is 25ml) while stirring the mixed solution, so that the manganese element The loading amount of cobalt element is 5.5%, and the loading amount of cobalt element is 5.9%. Place the beaker in an ultrasonic generator and ultrasonically impregnate it for 2 hours until the mixed salt solution is completely impregnated into the carrier, place the impregnated sample in a drying oven at 105°C for 12 hours, and finally pass through a muffle furnace in the T...

Embodiment 2

[0036] Dissolve 2.451g of manganese acetate, 2.911g of cobalt nitrate and 0.032g of tourmaline in 25ml of deionized water to obtain a mixed solution, so that the loading capacity of tourmaline is 0.32%, magnetically stir at room temperature for 2h to make the solution evenly mixed, while stirring Drop the mixed salt solution into a beaker with 10g of dry KIT-6, place the beaker in an ultrasonic generator, and ultrasonically impregnate for 2 hours until the mixed salt solution is completely impregnated into the carrier, and place the impregnated sample in an oven. The catalyst was obtained by drying in a dry box at 105°C for 12 hours, and finally calcining and activating at 500°C in air for 5 hours in a muffle furnace. The prepared catalyst was ground and sieved, and the particle size was 40-60 mesh for later use to prepare catalyst B.

Embodiment 3

[0038] Dissolve 2.451g of manganese acetate, 2.911g of cobalt nitrate and 0.064g of tourmaline in 25ml of deionized water to obtain a mixed solution, so that the loading capacity of tourmaline is 0.64%, stir magnetically at room temperature for 2 hours to mix the solution evenly, and mix the solution while stirring. Drop the mixed salt solution into a beaker with 10g of dry KIT-6, place the beaker in an ultrasonic generator, and ultrasonically immerse it for 2 hours until the mixed salt solution is completely impregnated into the carrier, and place the beaker in an ultrasonic generator , ultrasonically impregnated for 2 h, placed the impregnated sample in a drying oven at 105 °C for 12 h, and finally activated the catalyst by calcining in a muffle furnace at 500 °C for 5 h in air. The prepared catalyst was ground and sieved, and the particle size was 40-60 mesh for later use to obtain catalyst C.

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a manganese-based denitration catalyst containing tourmaline. The manganese-based denitration catalyst comprises a carrier, an auxiliary and active components, wherein the carrier is KIT-6 mesoporous molecular sieves, the auxiliary is the tourmaline, and the active components are manganese salt and cobalt salt; the loading capacity of manganese is 5-20%, the loading capacity of cobalt is 1-10%, and the mole ratio of the manganese to the cobalt is (1.0-3.0):1; the loading capacity of the tourmaline is 0.1-1%. The manganese-based denitration catalyst is prepared by an equivalent-volume impregnation method. The manganese-based denitration catalyst and the preparation method thereof have the advantages that natural ore is used, catalyst cost can be lowered favorably, the preparation process is simple, and the prepared catalyst has high NO removing efficiency at low temperature and excellent SO2 and H2O poisoning resistance.

Description

technical field [0001] This paper relates to the field of low-temperature flue gas denitrification, specifically for NH 3 A tourmaline-containing manganese-based low-temperature denitrification catalyst with high sulfur and water resistance performance and a preparation method thereof for selective catalytic reduction of NO. Background technique [0002] Nitrogen oxides (NO x ) is a common air pollutant whose main components are NO and NO 2 and a small amount of N 2 O. Mainly from mobile sources such as motor vehicles, and NOx emissions from thermal power plants, cement industry, domestic and other industries x About 50 million tons. At present, the rapid deterioration of the environment and the frequent occurrence of regional smog have made China's governance NO x Pollution is imminent. [0003] The denitrification technology for industrial application is mainly selective catalytic reduction (SCR) denitrification technology. Among them, the core of SCR technology is...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/03B01D53/86B01D53/56
CPCB01D53/8628B01D2255/2073B01D2255/20746B01D2257/404B01J29/0341B01J2229/186Y02C20/30
Inventor 薛刚桂鹏梁金生李苗苗李家昂
Owner HEBEI UNIV OF TECH
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