TY - JOUR

T1 - A study of adsorption of acetone on an SiO2 surface at low temperatures by IR spectroscopy

AU - Storozheva, E. N.

AU - Tsyganenko, A. A.

PY - 2003/3/1

Y1 - 2003/3/1

N2 - Adsorption of acetone on an SiO2 (aerosil) surface at 300 and 77 K was studied by IR spectroscopy. It was shown that, given a small surface coverage, the carbonyl group interacts simultaneously with two OH groups (νOH = 3420 cm-1, νC=O = 1696 cm-1) and, at a higher adsorbed amount of acetone, predominantly with one OH group; in this case, the maximum of the absorption band of OH is additionally shifted toward lower frequencies (νOH = 3280 cm-1), and the disturbance of the carbonyl group decreases (νC=O = 1708 cm-1). It was established that the adsorption on isolated silanol groups of the methoxylated surface results in 1:1 complexes irrespective of surface coverage.

AB - Adsorption of acetone on an SiO2 (aerosil) surface at 300 and 77 K was studied by IR spectroscopy. It was shown that, given a small surface coverage, the carbonyl group interacts simultaneously with two OH groups (νOH = 3420 cm-1, νC=O = 1696 cm-1) and, at a higher adsorbed amount of acetone, predominantly with one OH group; in this case, the maximum of the absorption band of OH is additionally shifted toward lower frequencies (νOH = 3280 cm-1), and the disturbance of the carbonyl group decreases (νC=O = 1708 cm-1). It was established that the adsorption on isolated silanol groups of the methoxylated surface results in 1:1 complexes irrespective of surface coverage.

UR - http://www.scopus.com/inward/record.url?scp=0038417996&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0038417996

VL - 77

SP - 458

EP - 461

JO - Russian Journal of Physical Chemistry A

JF - Russian Journal of Physical Chemistry A

SN - 0036-0244

IS - 3

ER -