Variable-temperature infrared spectrometry of carbon monoxide adsorbed on the zeolite K-ZSM-5

Authors
Manoilova, OV Mentruit, MP Palomino, GT Tsyganenko, AA Arean, CO
Citation
Ov. Manoilova et al., Variable-temperature infrared spectrometry of carbon monoxide adsorbed on the zeolite K-ZSM-5, VIB SPECTR, 26(1), 2001, pp. 107-111
Citations number
43
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
VIBRATIONAL SPECTROSCOPY
ISSN journal
09242031 → ACNP
Volume
26
Issue
1
Year of publication
2001
Pages
107 - 111
Database
ISI
SICI code
0924-2031(20010703)26:1<107:VISOCM>2.0.ZU;2-M
Abstract
Carbon monoxide interacts with extra-framework K+ ions of the zeolite K-ZSM -5 forming both K+. . . CO and K+. . . OC species, which are characterized by C-O stretching IR bands at 2166 and 2117 cm(-1), respectively. By means of variable-temperature FTIR spectrometry, the C- and O-bonded adducts were found to be in a temperature dependent equilibrium which involves a standa rd enthalpy change of 3.2 kJ mol(-1). The C-bonded species show the highest cation-CO interaction energy. (C) 2001 Elsevier Science B.V. All rights re served.