Research output: Contribution to journal › Article › peer-review
Infrared study of ozone adsorption on CaO. / Bulanin, K. M.; Lavalley, J. C.; Tsyganenko, A. A.
In: Journal of Physical Chemistry B, Vol. 101, No. 15, 10.04.1997, p. 2917-2922.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Infrared study of ozone adsorption on CaO
AU - Bulanin, K. M.
AU - Lavalley, J. C.
AU - Tsyganenko, A. A.
PY - 1997/4/10
Y1 - 1997/4/10
N2 - Ozone adsorption on CaO pretreated at different temperatures was studied by FTIR spectroscopy at 77-300 K. Besides physisorption effects, a weak complex was observed formed by ozone molecules with the OH surface groups, which have pronounced basic properties, as shown by a downward shift of the vOH band by about 21 cm-1 and by slight changes in ozone vibrational frequencies. Chemisorption of O3 occurred on CaO activated at 973 K as evidenced by the appearance of a band at 812 cm-1 accompanied by two weaker peaks at 1859 and 625 cm-1 attributed to the v3, v1 + v3, and v2 vibrational modes, respectively, of the surface ozonide O3- ions. Experiments with 18O substitution supported this assignment. Effect of CO preadsorption showed ozone chemisorption to occur on the same coordinate-unsaturated O2- surface sites that accounted for the formation of the "carbonite" CO22- ion from CO adsorbed on highly activated CaO.
AB - Ozone adsorption on CaO pretreated at different temperatures was studied by FTIR spectroscopy at 77-300 K. Besides physisorption effects, a weak complex was observed formed by ozone molecules with the OH surface groups, which have pronounced basic properties, as shown by a downward shift of the vOH band by about 21 cm-1 and by slight changes in ozone vibrational frequencies. Chemisorption of O3 occurred on CaO activated at 973 K as evidenced by the appearance of a band at 812 cm-1 accompanied by two weaker peaks at 1859 and 625 cm-1 attributed to the v3, v1 + v3, and v2 vibrational modes, respectively, of the surface ozonide O3- ions. Experiments with 18O substitution supported this assignment. Effect of CO preadsorption showed ozone chemisorption to occur on the same coordinate-unsaturated O2- surface sites that accounted for the formation of the "carbonite" CO22- ion from CO adsorbed on highly activated CaO.
UR - http://www.scopus.com/inward/record.url?scp=0013068022&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0013068022
VL - 101
SP - 2917
EP - 2922
JO - Journal of Physical Chemistry B
JF - Journal of Physical Chemistry B
SN - 1520-6106
IS - 15
ER -
ID: 41684106