Research output: Contribution to journal › Article › peer-review
Variable-temperature IR spectroscopic studies of CO adsorbed on Na-ZSM-5 and Na-Y zeolites. / Tsyganenko, A. A.; Escalona Platero, E.; Otero Areán, C.; Garrone, E.; Zecchina, A.
In: Catalysis Letters, Vol. 61, No. 3-4, 01.09.1999, p. 187-192.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Variable-temperature IR spectroscopic studies of CO adsorbed on Na-ZSM-5 and Na-Y zeolites
AU - Tsyganenko, A. A.
AU - Escalona Platero, E.
AU - Otero Areán, C.
AU - Garrone, E.
AU - Zecchina, A.
PY - 1999/9/1
Y1 - 1999/9/1
N2 - CO interacts with extra-framework alkali metal cations (M+) of zeolites to form both M+⋯CO and M+⋯OC species. By using variable-temperature FTIR spectroscopy, these C-bonded and O-bonded species were found to be in a temperature-dependent equilibrium. For the same cation, the difference in interaction energy depends upon the zeolite framework. Thus, for the equilibrium process ZNa+⋯CO ⇌ ZNa+⋯OC, where Z represents the zeolite framework, ΔH0 was found to take the values 3.8 and 2.4 kJ mol-1 for CO/Na-ZSM-5 and CO/Na-Y, respectively. The C-bonded species show always the highest cation-CO interaction energy.
AB - CO interacts with extra-framework alkali metal cations (M+) of zeolites to form both M+⋯CO and M+⋯OC species. By using variable-temperature FTIR spectroscopy, these C-bonded and O-bonded species were found to be in a temperature-dependent equilibrium. For the same cation, the difference in interaction energy depends upon the zeolite framework. Thus, for the equilibrium process ZNa+⋯CO ⇌ ZNa+⋯OC, where Z represents the zeolite framework, ΔH0 was found to take the values 3.8 and 2.4 kJ mol-1 for CO/Na-ZSM-5 and CO/Na-Y, respectively. The C-bonded species show always the highest cation-CO interaction energy.
KW - Carbon monoxide adsorption
KW - Heterogeneous catalysis
KW - IR spectroscopy
KW - Zeolites
UR - http://www.scopus.com/inward/record.url?scp=0033201239&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0033201239
VL - 61
SP - 187
EP - 192
JO - Catalysis Letters
JF - Catalysis Letters
SN - 1011-372X
IS - 3-4
ER -
ID: 41683163