Details

Autor(en) / Beteiligte

• YANG, Hui
• LIU, Hao
• ZHOU, Kang
• YAN, Zhi-qiang
• ZHAO, Ran
• LIU, Zi-hong
• LIU, Zhao-hui
• QIU, Jian-rong

Titel

Oxidation path analysis of NO in the adsorption and removal process using activated carbon fibers

Ist Teil von

• Journal of fuel chemistry and technology, 2012-08, Vol.40 (8), p.1002-1008

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2012

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• The removal of NO by viscose base activated carbon fibers were carried out on a fixed-bed adsorption reactor. The methods such as hydrogen peroxide (H2O2) solution impregnation, heat treatment were employed separately to modify the activated carbon fibers. The NO removal efficiency was investigated using the activated carbon fibers before and after modification in the inert nitrogen atmosphere, oxygen-containing atmosphere. Furthermore, the change of activated carbon fibers characteristics, such as pore structure as well as nitrogenous or oxygenous surface functional groups, was also discussed in order to explore the effect of oxygen-containing functional groups and O2 in atmosphere on the NO catalytic oxidation and the transformation process of NO to NO2. The results show that in the nitrogen atmosphere the C–O functional groups of the activated carbon fiber surface can oxidize the adsorbed NO to be −NO2. On the other hand, in the oxygen atmosphere −NO2 and −NO3 are detected in the activated carbon fibers surface after the NO adsorbing. It is found that NO removal efficiency in stable stage after long time test is almost the same for the original activated carbon fibers as well as the two modified ones, which indicates that the transformation of NO to NO2 is mainly resulted from the reaction between the adsorbed NO on activated carbon fibers and the free oxygen in atmosphere.