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Population lifetimes of the OH stretching band of water molecules on zeolite surfaces

✍ Scribed by T. Fujino; M. Kashitani; K. Fukuyama; J. Kubota; J.N. Kondo; A. Wada; K. Domen; C. Hirose; F. Wakabayashi; S.S. Kano

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
367 KB
Volume
261
Category
Article
ISSN
0009-2614

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✦ Synopsis

The population lifetimes of the OH stretching mode of a water molecule hydrogen-bonded to the Bronsted acidic hydroxyl groups in a mordenite-type zeolite have been measured at various temperatures using an infrared picosecond pump-probe technique. An extraordinary temperature dependence has been observed for the lifetime of hydrogen-bonded H20, which was explained by the creation of one quantum of the adbond vibrational mode and two bulk phonons in the relaxation process.

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