TY - JOUR
T1 - Reactivity of surface species in the reduction of NOx by ethanol on Ag/Al2O3
AU - Chafik, Tank
AU - Kameoka, Satochi
AU - Ukisu, Yuji
AU - Miyadera, Tatsuo
N1 - Funding Information:
z Corresponding author. Fax: (212) 9 39 39 53, Email: chafik@fstt.ac.ma T. C. gratefully acknowledge the Science and TechnologyA gency of Japan for the financial support
PY - 2000
Y1 - 2000
N2 - In situ diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy has been used to investigate the surface species involved in NOx reduction by ethanol over Ag/Al2O3 catalyst. The DRIFT measurements, carried out in dynamic conditions, were combined with gas chromatography (GC) analysis to monitor the N2 formation under C2H5OH/NO/O2/He mixture and after a switch to He followed by heating under He (mixture, 250°C→He, 250°C→Heating under He). A parallelism has been-observed between the change in isocyanate band area and the N2 formation during step change experiment. The isocyanate species (NCO) were found to be generated from the decomposition of adsorbed organic nitro compounds formed under ethanol/NO/O2/He and ethanol/NO/He. The role of oxygen in NOx reduction was investigated by performing the same set of experiment with a reaction mixture without oxygen.
AB - In situ diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy has been used to investigate the surface species involved in NOx reduction by ethanol over Ag/Al2O3 catalyst. The DRIFT measurements, carried out in dynamic conditions, were combined with gas chromatography (GC) analysis to monitor the N2 formation under C2H5OH/NO/O2/He mixture and after a switch to He followed by heating under He (mixture, 250°C→He, 250°C→Heating under He). A parallelism has been-observed between the change in isocyanate band area and the N2 formation during step change experiment. The isocyanate species (NCO) were found to be generated from the decomposition of adsorbed organic nitro compounds formed under ethanol/NO/O2/He and ethanol/NO/He. The role of oxygen in NOx reduction was investigated by performing the same set of experiment with a reaction mixture without oxygen.
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U2 - 10.1016/s0167-2991(00)80398-5
DO - 10.1016/s0167-2991(00)80398-5
M3 - Article
AN - SCOPUS:0034350629
SN - 0167-2991
VL - 130 B
SP - 1415
EP - 1420
JO - Studies in Surface Science and Catalysis
JF - Studies in Surface Science and Catalysis
ER -