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

Preparation method and application of hydrotalcite-based carbon-doped copper-magnesium-aluminum composite oxide catalyst

A hydrotalcite-based, aluminum composite technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the high cost of carbon nanotubes and the modification process of carbon tubes. It can improve the anti-sulfur performance, slow down the poisoning effect, and improve the activity effect.

Active Publication Date: 2022-05-27
JINZHONG UNIV +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this preparation method needs to modify the carbon nanotubes in the early stage, the carbon tube modification process is too complicated, and the cost of carbon nanotubes is relatively high

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
  • Preparation method and application of hydrotalcite-based carbon-doped copper-magnesium-aluminum composite oxide catalyst
  • Preparation method and application of hydrotalcite-based carbon-doped copper-magnesium-aluminum composite oxide catalyst
  • Preparation method and application of hydrotalcite-based carbon-doped copper-magnesium-aluminum composite oxide catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Take 30 ml respectively and the concentration is 0.5 mol·L -1 Aqueous solution of aluminum nitrate nonahydrate, 30 ml concentration is 0.5mol·L -1 Aqueous solution of magnesium nitrate hexahydrate and 30 ml with a concentration of 1.0 mol L -1 The prepared aqueous solution of copper nitrate trihydrate was placed in a beaker, stirred with a magnetic stirrer for 10 min to make it evenly mixed, and the prepared salt solution was transferred to a dropping funnel for use;

[0037] (2) Take 300 ml as a concentration of 1.00 mol L -1 The sodium hydroxide aqueous solution is transferred to the dropping funnel for use;

[0038] (3) Take 90 ml as 0.2 mol L -1 The sodium dodecyl sulfonate solution is placed in a four-necked flask, and the sodium hydroxide aqueous solution and the mixed salt solution are simultaneously dropped into the above solution under magnetic stirring, and the pH value in the titration process is monitored in real time with an acidity meter to control th...

Embodiment 2

[0043] (1) Take 30 ml respectively and the concentration is 0.5 mol·L -1 Aqueous solution of aluminum nitrate nonahydrate, 0.5 mol L in 60 ml -1 Aqueous solution of magnesium nitrate hexahydrate and 15 ml with a concentration of 1.0 mol L -1 The prepared aqueous copper nitrate trihydrate solution was placed in a four-necked flask, and stirred for 10 min with a magnetic stirrer to make it evenly mixed, and the prepared salt solution was transferred to a dropping funnel for use;

[0044] (2) Take 300 ml as a concentration of 1.00 mol L -1 The sodium hydroxide aqueous solution is transferred to the dropping funnel for use;

[0045] (3) Take 45 ml as 0.4 mol L -1 The sodium dodecyl sulfonate solution is placed in a four-necked flask, and the sodium hydroxide aqueous solution and the mixed salt solution are simultaneously dropped into the above solution under magnetic stirring, and the pH value in the titration process is monitored in real time with an acidity meter, and the tit...

Embodiment 3

[0050] (1) Take 30 ml respectively and the concentration is 0.5 mol·L -1 Aqueous solution of aluminum nitrate nonahydrate, 60 ml concentration is 0.5mol·L -1 Aqueous solution of magnesium nitrate hexahydrate and 30 ml with a concentration of 1.0 mol L -1 The prepared aqueous copper nitrate trihydrate solution was placed in a four-necked flask, and stirred for 10 min with a magnetic stirrer to make it evenly mixed, and the prepared salt solution was transferred to a dropping funnel for use;

[0051] (2) Take 300 ml as a concentration of 1.00 mol L -1 The sodium hydroxide aqueous solution is transferred to the dropping funnel for use;

[0052] (3) Take 60 ml as 0.4 mol L -1 The sodium dodecyl sulfonate solution is placed in a beaker, and the sodium hydroxide aqueous solution and the mixed salt solution are dropped into the above solution at the same time under magnetic stirring, and the pH value in the titration process is monitored in real time with an acidity meter, and the...

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

No PUM Login to View More

Abstract

The invention discloses a hydrotalcite-based carbon-doped copper-magnesium-aluminum composite oxide catalyst as well as a preparation method and application thereof, and belongs to the technical field of air pollution control. The preparation method of the catalyst comprises the following steps: dropwise adding a mixed salt solution of copper nitrate, magnesium nitrate and aluminum nitrate and a NaOH alkali solution into a solution containing sodium dodecyl sulfate (SDSO), controlling the synthesis pH to be 9.0-10.0, and performing one-step in-situ synthesis on a CuMgAl hydrotalcite-like precursor of an SDSO intercalation; the hydrotalcite-based carbon-doped copper-magnesium-aluminum composite oxide denitration catalyst (CuMgAl-SDDS-LDO) is prepared by roasting the hydrotalcite-based carbon-doped copper-magnesium-aluminum composite oxide in a nitrogen atmosphere and then roasting the hydrotalcite-based carbon-doped copper-magnesium-aluminum composite oxide denitration catalyst in an air atmosphere; a denitration activity test and sulfur resistance evaluation show that the CuMgAl-SDSO-LDO catalyst has high NH3-SCR activity, good N2 selectivity and relatively strong sulfur resistance in a low-temperature region (150-270 DEG C).

Description

technical field [0001] The invention relates to a catalyst and a preparation method thereof, in particular to a hydrotalcite-based carbon-doped copper-magnesium-aluminum composite oxide catalyst, which can be used for low-temperature NH 3 -SCR reaction belongs to the technical field of air pollution prevention and control. Background technique [0002] Nitrogen oxides (NO x ) is a global air pollutant with serious adverse effects on the environment, climate and human health, NO x The high-efficiency removal of carbon dioxide has become an important task of related industrial production units. Among many denitrification technologies, ammonia selective catalytic reduction technology (NH 3 -SCR) has become the most widely used flue gas denitrification technology at home and abroad due to its high removal efficiency, large gas processing capacity, and easy control of reaction conditions. For low temperature denitration process, the choice of catalyst is very important. The ...

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): B01J23/78B01D53/86B01D53/56
CPCB01J23/78B01J23/002B01D53/8628B01J2523/00B01J2523/17B01J2523/22B01J2523/31Y02P20/52
Inventor 杜亚丽武鲜凤吴旭刘江宁刘雪贞
Owner JINZHONG 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