Research output: Contribution to journal › Article › peer-review
Variable temperature FTIR studies on the interaction between molecular hydrogen and alkali-metal-exchanged ZSM-5 zeolites. / Turnes Palomino, G.; Rodríguez Delgado, M.; Tsyganenko, N. M.; Tsyganenko, A. A.; Garrone, E.; Bonelli, B.; Manoilova, O. V.; Otero Areán, C.
In: Studies in Surface Science and Catalysis, Vol. 158 A, 2005, p. 853-860.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Variable temperature FTIR studies on the interaction between molecular hydrogen and alkali-metal-exchanged ZSM-5 zeolites
AU - Turnes Palomino, G.
AU - Rodríguez Delgado, M.
AU - Tsyganenko, N. M.
AU - Tsyganenko, A. A.
AU - Garrone, E.
AU - Bonelli, B.
AU - Manoilova, O. V.
AU - Otero Areán, C.
PY - 2005
Y1 - 2005
N2 - Fourier transform infrared spectrometry was used to study adsorption of dihydrogen on M+-ZSM-5 zeolites (M = Li, Na, K). Interaction of the adsorbed molecule with the zeolite adsorption centres renders the fundamental H-H stretching mode infrared active; the corresponding absorption bands appeared at 4092, 4101 and 4112 cm-1 for the Li, Na and K exchanged zeolite, respectively. From series of variable-temperature infrared spectra, for which integral absorbance, temperature and hydrogen equilibrium pressure were simultaneously measured, thermodynamic characterization of the adsorption process was accomplished. The standard adsorption enthalpy resulted to be -6.5, -10.3 and -9.1 kJ mol-1 for H2/Li-ZSM-5, H 2/Na-ZSM-5 and H2/K-ZSM-5, respectively. For the standard adsorption entropy corresponding values were found to be -90, -121 and -124 J mol-1 K-1, respectively.
AB - Fourier transform infrared spectrometry was used to study adsorption of dihydrogen on M+-ZSM-5 zeolites (M = Li, Na, K). Interaction of the adsorbed molecule with the zeolite adsorption centres renders the fundamental H-H stretching mode infrared active; the corresponding absorption bands appeared at 4092, 4101 and 4112 cm-1 for the Li, Na and K exchanged zeolite, respectively. From series of variable-temperature infrared spectra, for which integral absorbance, temperature and hydrogen equilibrium pressure were simultaneously measured, thermodynamic characterization of the adsorption process was accomplished. The standard adsorption enthalpy resulted to be -6.5, -10.3 and -9.1 kJ mol-1 for H2/Li-ZSM-5, H 2/Na-ZSM-5 and H2/K-ZSM-5, respectively. For the standard adsorption entropy corresponding values were found to be -90, -121 and -124 J mol-1 K-1, respectively.
UR - http://www.scopus.com/inward/record.url?scp=30944434184&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:30944434184
VL - 158 A
SP - 853
EP - 860
JO - Studies in Surface Science and Catalysis
JF - Studies in Surface Science and Catalysis
SN - 0167-2991
ER -
ID: 13733720