Abstract: Surface complexes of β-picoline, 3-pyridine-carbaldehyde and nicotinic acid on sulfated TiO2 (anatase) containing 0.12 and 6.9 wt.% SO42− were studied using FTIR spectroscopy. The water and β-picoline were used as molecular probes for identification of surface acidity and sulfate species. Depending on SO42− content, FTIR spectra have revealed differences in the type, quantity and strength of acidic sites as well as in the composition and strength of surface complexes of β-picoline, 3-pyridine-carbaldehyde and nicotinic acid. Both samples possess Lewis and Bronsted acidic sites. But only TiO2 (6.9) contains strong Bronsted sites. On this sample the dead-end nicotinates form during 3-pyridine-carbaldehyde transformation while the weakly bound nicotinates on TiO2 (0.12) surface transform into nicotinic acid.

Cite: Chesalov Y.A. , Chernobay G.B. , Andrushkevich T.V.
FTIR Study of the Surface Complexes of β-Picoline, 3-Pyridine-Carbaldehyde and Nicotinic Acid on Sulfated TiO2 (Anatase)
Journal of Molecular Catalysis A: Chemical. 2013. V.373. P.96-107. DOI: 10.1016/j.molcata.2013.03.007 WOS Scopus РИНЦ ANCAN OpenAlex

Dates:

Submitted:	Feb 5, 2013
Accepted:	Mar 12, 2013
Published online:	Mar 17, 2013
Published print:	Jul 1, 2013

Identifiers:

Web of science:	WOS:000319242800013
Scopus:	2-s2.0-84876900129
Elibrary:	20441429
Chemical Abstracts:	2013:689568
Chemical Abstracts (print):	158:641300
OpenAlex:	W1978077339

Citing:

DB	Citing
Web of science	35
Scopus	38
Elibrary	35
OpenAlex	39

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