The modified activated carbon treated with a low-temperature iodine plasma used as electrode material for electrochemical capacitors

2016 ◽  
Vol 175 ◽  
pp. 96-100 ◽  
Author(s):  
G. Lota ◽  
J. Tyczkowski ◽  
P. Makowski ◽  
J. Balcerzak ◽  
K. Lota ◽  
...  
Catalysts ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1423
Author(s):  
Marwa Saad ◽  
Agnieszka Szymaszek ◽  
Anna Białas ◽  
Bogdan Samojeden ◽  
Monika Motak

The goal of the study was to modify activated carbon (AC) with nitrogen groups and ceria and to test the obtained materials in low temperature selective catalytic reduction of nitrogen oxides. For that purpose, the starting AC was oxidized with HNO3 of various concentrations, modified with urea and doped with 0.5 wt.% of Ce. It was observed that the increased concentration of acid influenced the catalytic activity, since textural and surface chemistry of activated carbon was changed. The most active sample was that modified with 14 M HNO3 and it reached 96% of NO conversion at 300 °C. Additionally, the addition of Ce improved the catalytic performance of modified AC, and NO was reduced according to oxidation–reduction mechanism, characteristic for supported metal oxides. Nevertheless, the samples promoted with Ce emitted significantly higher amount of CO2 comparing to the non-promoted ones.


2011 ◽  
Vol 12 (6) ◽  
pp. 394-398 ◽  
Author(s):  
Lili Zhu ◽  
Bichun Huang ◽  
Wenhui Wang ◽  
Zhengle Wei ◽  
Daiqi Ye

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