Ultralow loading of nanostructured Mn species onto two-dimensional Co3O4 nanosheets for selective catalytic reduction of NOx with NH3

2020 ◽  
Vol 10 (10) ◽  
pp. 3450-3457
Author(s):  
Kang Zheng ◽  
Zhiyuan Zhou ◽  
Yongzhao Wang ◽  
Zhiling Xin ◽  
Zhiliang Zhao ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Two Dimensional ◽  
Scr Of No ◽  
Mn Species ◽  
Reduction Of Nox

We report a facile method for dispersing Mn species onto two-dimensional Co3O4 nanosheets at the nanoscale for the selective catalytic reduction (SCR) of NOx with NH3.

The selective catalytic reduction of NOx over a Cu/ZSM-5/SAPO-34 composite catalyst

RSC Advances ◽  
2015 ◽  
Vol 5 (127) ◽  
pp. 104923-104931 ◽  
Author(s):  
Jixing Liu ◽  
Weiyu Song ◽  
Chi Xu ◽  
Jian Liu ◽  
Zhen Zhao ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Mass Fraction ◽  
Catalytic Reduction ◽  
Composite Catalyst ◽  
Composite Catalysts ◽  
Scr Of No ◽  
Reduction Of Nox ◽  
Seed Method ◽  
Catalytic Performances

A series of Cu/ZSM-5/SAPO-34 composite catalysts with varying ZSM-5 mass fraction were synthesized using a pre-seed method, and their catalytic performances were tested for selective catalytic reduction (SCR) of NO with NH3.

Novel Fe–Ce–Ti catalyst with remarkable performance for the selective catalytic reduction of NOx by NH3

2016 ◽  
Vol 6 (17) ◽  
pp. 6688-6696 ◽  
Author(s):  
Zhiming Liu ◽  
Yuxian Liu ◽  
Biaohua Chen ◽  
Tianle Zhu ◽  
Lingling Ma
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Catalytic Performance ◽  
Redox Cycle ◽  
Reaction Intermediates ◽  
Scr Of No ◽  
Reduction Of Nox

The redox cycle (Ce4+ + Fe2+ ↔ Ce3+ + Fe3+) over the Fe–Ce–Ti catalyst contributes to the activation of NOx and NH3 and thus the formation of reaction intermediates, leading to the high catalytic performance for the NH3-SCR of NOx.

Non-pitch coal-based activated coke introduced CeOx and/or MnOx for low temperature selective catalytic reduction of NOx by NH3

RSC Advances ◽  
2016 ◽  
Vol 6 (11) ◽  
pp. 8539-8548 ◽  
Author(s):  
Yali Fu ◽  
Yongfa Zhang ◽  
Guoqiang Li ◽  
Jing Zhang ◽  
Fang Tian
Keyword(s):  
Time Delay ◽  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Gradual Increase ◽  
Denitrification Activity ◽  
Mn Species ◽  
Reduction Of Nox ◽  
Activated Coke

On the modified activated coke, the CeOx species, promoting NOx adsorption, significantly increased the starting denitrification activity and the Mn species, helping NH3 adsorption, showed a gradual increase in activity after a time delay.

scholarly journals Enhanced Oxygen Vacancies in a Two-Dimensional MnAl-Layered Double Oxide Prepared via Flash Nanoprecipitation Offers High Selective Catalytic Reduction of NOx with NH3

Nanomaterials ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 620 ◽  
Author(s):  
Dan Zhao ◽  
Chao Wang ◽  
Feng Yu ◽  
Yulin Shi ◽  
Peng Cao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Oxygen Vacancies ◽  
Catalytic Reduction ◽  
Space Velocity ◽  
Two Dimensional ◽  
Flash Nanoprecipitation ◽  
Double Oxide ◽  
No Conversion ◽  
Reduction Of Nox

A two-dimensional MnAl-layered double oxide (LDO) was obtained by flash nanoprecipitation method (FNP) and used for the selective catalytic reduction of NOx with NH3. The MnAl-LDO (FNP) catalyst formed a particle size of 114.9 nm. Further characterization exhibited rich oxygen vacancies and strong redox property to promote the catalytic activity at low temperature. The MnAl-LDO (FNP) catalyst performed excellent NO conversion above 80% at the temperature range of 100–400 °C, and N2 selectivity above 90% below 200 °C, with a gas hourly space velocity (GHSV) of 60,000 h−1, and a NO concentration of 500 ppm. The maximum NO conversion is 100% at 200 °C; when the temperature in 150–250 °C, the NO conversion can also reach 95%. The remarkable low-temperature catalytic performance of the MnAl-LDO (FNP) catalyst presented potential applications for controlling NO emissions on the account of the presentation of oxygen vacancies.

Cu-exchanged RTH-type zeolites for NH3-selective catalytic reduction of NOx: Cu distribution and hydrothermal stability

2019 ◽  
Vol 9 (1) ◽  
pp. 106-115 ◽  
Author(s):  
Yulong Shan ◽  
Xiaoyan Shi ◽  
Jinpeng Du ◽  
Yunbo Yu ◽  
Hong He
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Hydrothermal Stability ◽  
Scr Of No ◽  
Reduction Of Nox

The Cu-exchanged RTH-type zeolites (Cu-RTH) were applied in ammonia-selective catalytic reduction (NH3-SCR) of NOx.

scholarly journals Assessing the effect of reducing agents on the selective catalytic reduction of NOx over Ag/Al2O3 catalysts

2016 ◽  
Vol 6 (6) ◽  
pp. 1661-1666 ◽  
Author(s):  
Carmine D'Agostino ◽  
Sarayute Chansai ◽  
Isabelle Bush ◽  
Chensong Gao ◽  
Mick D. Mantle ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Catalyst Activity ◽  
Nmr Relaxation ◽  
Reducing Agents ◽  
Time Analysis ◽  
Wet Impregnation ◽  
Scr Of No ◽  
Reduction Of Nox ◽  
Nmr Relaxation Time

The selective catalytic reduction (SCR) of NOx in the presence of different reducing agents over Ag/Al2O3 prepared by wet impregnation was investigated by probing catalyst activity and using NMR relaxation time analysis.

Fe2O3@SiTi core–shell catalyst for the selective catalytic reduction of NOx with NH3: activity improvement and HCl tolerance

2018 ◽  
Vol 8 (13) ◽  
pp. 3313-3320 ◽  
Author(s):  
Huazhen Chang ◽  
Tao Zhang ◽  
Hao Dang ◽  
Xiaoyin Chen ◽  
Yanchen You ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Core Shell ◽  
Scr Of No ◽  
Reduction Of Nox

A core–shell structured Fe2O3@SiTi catalyst with a SiTi shell and Fe2O3 core was prepared and used for the selective catalytic reduction (SCR) of NOx with NH3.

scholarly journals Mn/SAPO-34 as an efficient catalyst for the low-temperature selective catalytic reduction of NOx with NH3

RSC Advances ◽  
2017 ◽  
Vol 7 (51) ◽  
pp. 32146-32154 ◽  
Author(s):  
Chengkai Pang ◽  
Yuqun Zhuo ◽  
Qiyu Weng
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Excess Oxygen ◽  
Efficient Catalyst ◽  
Scr Of No ◽  
Reduction Of Nox

A series of Mn-exchanged SAPO-34 catalysts were synthesized and developed as catalysts for the low temperature selective catalytic reduction (SCR) of NO with ammonia in the presence of excess oxygen.

Synthesis of high-silica AEI zeolites with enhanced thermal stability by hydrothermal conversion of FAU zeolites, and their activity in the selective catalytic reduction of NOx with NH3

2015 ◽  
Vol 3 (2) ◽  
pp. 857-865 ◽  
Author(s):  
Takushi Sonoda ◽  
Toshihiro Maruo ◽  
Yoshitaka Yamasaki ◽  
Nao Tsunoji ◽  
Yasuyuki Takamitsu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Catalytic Performance ◽  
Hydrothermal Conversion ◽  
Scr Of No ◽  
High Silica ◽  
Reduction Of Nox

Cu-loaded AEI catalysts with different P/Al ratios showed a good catalytic performance for NH3-SCR of NOx.

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