Oxidation-reduction mechanism of iron in dioctahedral smectites: I. Crystal chemistry of oxidized reference nontronites

2000 ◽  
Vol 85 (1) ◽  
pp. 133-152 ◽  
Author(s):  
A. Manceau ◽  
B. Lanson ◽  
V.A. Drits ◽  
D. Chateigner ◽  
W.P. Gates ◽  
...  
Keyword(s):  
Crystal Chemistry ◽  
Reduction Mechanism ◽  
Oxidation Reduction

Oxidation-reduction mechanism of iron in dioctahedral smectites: II. Crystal chemistry of reduced Garfield nontronite

2000 ◽  
Vol 85 (1) ◽  
pp. 153-172 ◽  
Author(s):  
A. Manceau ◽  
V.A. Drits ◽  
B. Lanson ◽  
D. Chateigner ◽  
J. Wu ◽  
...  
Keyword(s):  
Crystal Chemistry ◽  
Reduction Mechanism ◽  
Oxidation Reduction

scholarly journals The Enhanced Performance of N-Modified Activated Carbon Promoted with Ce in Selective Catalytic Reduction of NOx with NH3

Catalysts ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1423
Author(s):  
Marwa Saad ◽  
Agnieszka Szymaszek ◽  
Anna Białas ◽  
Bogdan Samojeden ◽  
Monika Motak
Keyword(s):  
Catalytic Activity ◽  
Activated Carbon ◽  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Catalytic Performance ◽  
Reduction Mechanism ◽  
Modified Activated Carbon ◽  
Oxidation Reduction ◽  
Reduction Of Nox

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.

Opiate receptor function may be modulated through an oxidation-reduction mechanism

Science ◽  
1980 ◽  
Vol 208 (4448) ◽  
pp. 1171-1173 ◽  
Author(s):  
G Marzullo ◽  
B Hine
Keyword(s):  
Receptor Binding ◽  
Opiate Receptor ◽  
Reduction Mechanism ◽  
Receptor Function ◽  
Cupric Ion ◽  
Oxidation Reduction ◽  
Mechanism Of Oxidation

Cupric ion, a thiol oxidant, caused naloxone-reversible analgesia when injected intracerebroventricularly in mice; its potency was close to that of morphine. Dithiothreitol, a thiol reductant, reversed the analgesia induced by cupric ion and antagonized analgesia induced by morphine. Oxidized dithiothreitol had no effect. These findings, together with evidence for redox modification of opiate receptor binding in vitro, suggest that a mechanism of oxidation-reduction of thiols may modulate opiate receptor function.

Sign in / Sign up

Export Citation Format

Share Document