Effect of nitrogen doping on the reduction of nitric oxide with activated carbon in the presence of oxygen

Autor:	Xue-quan Zou, Xian-kai Wan, Hui-xiang Shi, Peng Ge, Dahui Wang
Rok vydání:	2008
Předmět:	inorganic chemicals Annealing (metallurgy) Doping Inorganic chemistry General Engineering Nitrogen doping chemistry.chemical_element Nitrogen Oxygen Nitric oxide chemistry.chemical_compound Ammonia chemistry medicine Activated carbon medicine.drug
Zdroj:	Journal of Zhejiang University-SCIENCE A. 9:113-117
ISSN:	1862-1775 1673-565X
DOI:	10.1631/jzus.a073019
Popis:	Nitrogen doping of activated carbon (AC) was performed by annealing both in ammonia and nitric oxide, and the activities of the modified carbons for NO reduction were studied in the presence of oxygen. Results show that nitrogen atoms were incorporated into the carbons, mostly in the form of pyridinic nitrogen or pyridonic nitrogen. The effect of nitrogen doping on the activities of the carbons can be ignored when oxygen is absent, but the doped carbons show desirable activities in the low temperature regime (≤500 °C) when oxygen is present. The role of the surface nitrogen species is suggested to promote the formation of NO2 in the presence of oxygen, and NO2 can facilitate decomposition of the surface oxygen species in the low temperature regime.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::685ab17b3654ee411a984ec9db689754 https://doi.org/10.1631/jzus.a073019 Zobrazit plný text záznamu Full text from SpringerLink