Infrared experimental proof of the orientation of CH4 adsorbed in NaA zeolite by means of the degeneracy splitting of the ν 3 band, in the temperature range 200-20 K
- 1 January 1984
- journal article
- Published by EDP Sciences in Journal de Physique Lettres
- Vol. 45 (6) , 255-257
- https://doi.org/10.1051/jphyslet:01984004506025500
Abstract
The infrared spectrum of methane adsorbed in NaA zeolite changes from 200 K to 20 K. The growth of the ν1 forbidden band and the degeneracy splitting of ν3 give evidence of the electric field in the zeolitic cavity. Below 80 K the molecule trapped in the adsorption site is probably oriented in a C3v configuration in front of a Na + cationKeywords
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