Abstract
Surface species formed during co-adsorption of acetone and nitrogen oxides on Cu-ZSM-5 were studied by infrared spectroscopy to help address intermediacy during selective catalytic reduction of NO by hydrocarbons in excess oxygen (SCR-HC). NO plus acetone on Cu-ZSM-5 produced only marginal spectral differences compared to acetone on Cu-ZSM-5, indicating limited interaction between the adsorbates. Oxygen addition to NO plus acetone on Cu-ZSM-5 resulted in considerable NO2 formation. Upon oxygen addition, bands assigned to surface carbonyls and carboxylates formed from acetone attenuated substantially, apparently due to a strong affinity of NO2 for these ketone-derived surface oxygenates. Co-adsorbed NO2 and acetone on Cu-ZSM-5 resulted in a weak band at 2590 cm−1. The co-adsorption data show that interaction of acetone was greater with the NO2 oxidant than with NO or oxygen. Addition of oxygen to NO plus acetone on Cu-ZSM-5 produced stronger interactions between oxidants and the organic reductant than those observed for the propene-containing system, especially at elevated temperatures (225°C). The results suggest that both oxygenate and NO2 intermediacy may benefit SCR-HC.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
J.T. Kummer, Progr. Energy Combust. Sci. 6 (1980) 177.
M. Iwamoto and N. Mizuno, Proc. Inst. Mech. Eng. 207 (1993) 23.
C.N. Montreuil and M. Shelef, Appl. Catal. B 1 (1992) L1.
H. Yasuda, T. Miyamoto and M. Misono, Prepr. Pap. ACS, Div. Fuel Chem. 39 (1994) 99.
C. Yokoyama and M. Misono, J. Catal. 150 (1994) 9.
T. Tanaka, T. Okuhara and M. Misono, Appl. Catal. B 4 (1994) L1.
H. Hamada, Y. Kintaichi, M. Sasaki, T. Ito and M. Tabata, Appl. Catal. 75 (1991) L1.
J. Valyon and W.K. Hall, J. Phys. Chem. 97 (1993) 1204.
J.O. Petunchi and W.K. Hall, Appl. Catal. B 2 (1993) L17.
T.E. Hoost, K.A. Laframboise and K. Otto, Appl. Catal. A, in press.
T.E. Hoost, K.A. Laframboise and K. Otto, Catal. Lett. 33 (1995) 105.
V. Bosacek, L. Kubelkova and J. Novakova, Stud. Surf. Sci. Catal. 65 (1991) 337.
L. Kubelkova, J. Cejka and J. Novakova, Zeolites 11 (1991) 48.
V.A. Bell, J.S. Feeley, M. Deeba and R.J. Farrauto, Catal. Lett. 29 (1994) 15.
S.V. Gerei, E.V. Rozhkova and Y.B. Gorokhovatsky, J. Catal. 28 (1973) 341.
T.P. Beebe, P. Gelin and J.T. Yates Jr., J. Catal. 148 (1984) 526.
E. Finocchio, G. Busca, V. Lorenzelli and R.J. Willey, J. Catal. 151 (1995) 204.
M. Iwamoto, N. Mizuno and H. Yahiro, Sekiyu Gakkaishi 34 (1991) 375.
K. Nakamoto,Infrared and Raman Spectra of Inorganic and Coordination Compounds (Wiley, New York, 1986).
J.W. London and A.T. Bell, J. Catal. 31 (1973) 32.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Hoost, T.E., Laframboise, K.A. & Otto, K. Infrared study of acetone and nitrogen oxides on Cu-ZSM-5. Catal Lett 37, 153–156 (1996). https://doi.org/10.1007/BF00807746
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00807746