Research output: Contribution to journal › Article › peer-review
Nonclassical Adsorption of Methanol on Palladium : The Competition between Adsorption of Single Molecules and Clusters. / Kaichev, Vasily V.; Selivanova, Aleksandra V.; Tsapina, Anna M. et al.
In: Journal of Physical Chemistry C, Vol. 123, No. 12, 28.03.2019, p. 7259-7265.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Nonclassical Adsorption of Methanol on Palladium
T2 - The Competition between Adsorption of Single Molecules and Clusters
AU - Kaichev, Vasily V.
AU - Selivanova, Aleksandra V.
AU - Tsapina, Anna M.
AU - Saraev, Andrey A.
AU - Bukhtiyarov, Valerii I.
N1 - Publisher Copyright: © 2019 American Chemical Society.
PY - 2019/3/28
Y1 - 2019/3/28
N2 - The adsorption of methanol on the Pd(111) surface at 80, 90, and 100 K has been studied by polarization modulation infrared reflection-absorption spectroscopy. It is found that the adsorption of methanol on the palladium surface does not proceed via the layer-by-layer mechanism. At temperatures below 100 K, methanol adsorbs molecularly to form clusters containing several hydrogen-bonded CH 3 OH molecules. These clusters have low thermal stability and decompose even at 100 K to form isolated methanol molecules bonded with palladium atoms. As a result, at a temperature between 100 and 120 K, methanol adsorbs intact to produce adsorbed isolated molecules. These adsorbed species fast desorb at a temperature above 120 K. The dehydration of methanol is not observed under used conditions.
AB - The adsorption of methanol on the Pd(111) surface at 80, 90, and 100 K has been studied by polarization modulation infrared reflection-absorption spectroscopy. It is found that the adsorption of methanol on the palladium surface does not proceed via the layer-by-layer mechanism. At temperatures below 100 K, methanol adsorbs molecularly to form clusters containing several hydrogen-bonded CH 3 OH molecules. These clusters have low thermal stability and decompose even at 100 K to form isolated methanol molecules bonded with palladium atoms. As a result, at a temperature between 100 and 120 K, methanol adsorbs intact to produce adsorbed isolated molecules. These adsorbed species fast desorb at a temperature above 120 K. The dehydration of methanol is not observed under used conditions.
UR - http://www.scopus.com/inward/record.url?scp=85063140960&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.9b00840
DO - 10.1021/acs.jpcc.9b00840
M3 - Article
AN - SCOPUS:85063140960
VL - 123
SP - 7259
EP - 7265
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 12
ER -
ID: 18949114