Overwhelming low ammonia escape and low temperature denitration efficiency via MnOx-decorated two-dimensional MgAl layered double oxides

Junqi Tian; Yanqin Li; Xia Zhou; Yongbin Yao; Denghao Wang; Jianming Dan; Bin Dai; Qiang Wang; Feng Yu

doi:10.1016/j.cjche.2020.01.004

Your Location：

Home >

Browse articles >

Overwhelming low ammonia escape and low temperature denitration efficiency via MnO_x-decorated two-dimensional MgAl layered double oxides

Energy, Resources and Environmental Technology | Updated：2026-01-06

- Overwhelming low ammonia escape and low temperature denitration efficiency via MnO_x-decorated two-dimensional MgAl layered double oxides
- Chinese Journal of Chemical Engineering Vol. 28, Issue 7, Pages: 1925-1934(2020)
- Affiliations：
  
  1. Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University,Shihezi,China,832003
  2. Environmental Functional Nanomaterials Laboratory, College of Environmental Science and Engineering, Beijing Forestry University,Beijing,China,100083
  3. Bingtuan Industrial Technology Research Institute, Shihezi University,Shihezi,China,832003
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2020.01.004
  CLC：
- Published：2020
- Accepted：
Scan QR Code
MnO
DOI：

MnO DOI： 10.1016/j.cjche.2020.01.004.

摘要

Abstract

Low temperature catalysts are attracting increasing attention in the selective catalytic reduction (SCR) of NO with NH

. MnO

-decorated MgAl layered double oxide (Mn/MgAl-LDO) was synthesized

via

a facile fast pour assisted co-precipitation (FP-CP) process. Compared to the Mn/MgAl-LDO obtained

via

slow drop assisted coprecipitation (SD-CP) method

the Mn/MgAl-LDO (FP-CP) has excellent activity. The Mn/MgAl-LDO (FP-CP) catalyst was shown to possess a high NO conversion rate of 76%-100% from 25 to 150 ℃

which is much better than the control Mn/MgAl-LDO (SD-CP) (29.4%-75.8%). In addition

the Mn/MgAl-LDO (FP-CP) offered an enhanced NO conversion rate of 97% and a N

selectivity of 97.3% at 100 ℃; the NO conversion rate was 100% and the N

selectivity was 90% at 150 ℃ with a GHSV of 60

000 h

-1

. The Mn/MgAl-LDO (FP-CP) catalyst exhibited a smaller fragment nano-sheet structure (sheet thickness of 7.23 nm). An apparent lattice disorder was observed in the HRTEM image confirming the presence of many defects. The H

-TPR curves

show that the Mn/MgAl-LDO (FPCP) catalyst has abundant reducing substances. Furthermore

the enhanced surface acidity makes the NH

concentration of the Mn/MgAl-LDO (FP-CP) catalyst lower than 100 ml·m

-3

after the reaction from 25 to 400 ℃. This can effectively reduce the ammonia escape rate in the SCR reaction. Thus

the Mn/MgAl-LDO (FP-CP) catalyst has potential applications in stationary industrial installations for environmentally friendly ultra-low temperature SCR.

关键词

Keywords

references

Views

101

Downloads

CSCD

Alert me when the article has been cited

Submit

Tools

Publicity Resources

Promoted catalytic property of Cu/SSZ-13 by introducing a minority of Mn for NO removal from diesel engine exhaust

Catalytic hydrogenation performance of ZIF-8 carbide for electrochemical reduction of carbon dioxide

A comparative study of the thermal and hydrothermal aging effect on Cu-SSZ-13 for the selective catalytic reduction of NOx with NH3

Carbon nanotubes loaded with vanadium oxide for reduction NO with NH3 at low temperature

Transfer and Reaction Performances of Selective Catalytic Reduction of N2O with CO over Monolith Catalysts

Related Author

Lin Yu

Rui Li

Wenjian Jiao

Zihan Gao

Guangying Fu

Ming Sun

Zhaoying Wang

Wuyuan Liu

Related Institution

Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center

Guangdong Engineering Technology Research Center of Modern Fine Chemical Engineering, School of Chemical Engineering and Light Industry, Guangdong University of Technology

Guangdong Foran Technology Company Limited

Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University

Testing and Certification Business Department, China Automotive Technology and Research Center Company Limited

⁰