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Mechanism for N 2 O formation from NO at ambient temperature
Author(s) -
Wang Jinsheng,
Jia Lufei,
Anthony Edward J.
Publication year - 2003
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690490126
Subject(s) - flue gas , chemistry , limiting , atmosphere (unit) , gas phase , humidity , moisture , reaction rate constant , phase (matter) , work (physics) , reaction mechanism , thermodynamics , environmental chemistry , kinetics , organic chemistry , catalysis , physics , mechanical engineering , quantum mechanics , engineering
N 2 O was reported to form in sample containers of flue gases containing NO and SO 2 . This could have significant implications for the evaluation of N 2 O buildup in the atmosphere. Existing models are based either on liquid‐phase reactions, which cannot account for N 2 O formation at low humidity, or on termolecular reactions, which are not likely to occur at low concentrations. In this work, we propose mechanisms for N 2 O formation based on gas‐phase reactions, which address the effect of SO 2 , O 2 , and moisture. Analytical expressions of the formation rate were derived and compared to reported rates, and rate constants were estimated for limiting cases. The current analyses suggest that N 2 O 2 could be an important precursor for N 2 O formation from NO, and the mechanism may be important for N 2 O formation in power‐plant plumes.