FTIR Study of β-Picoline and Pyridine-3-Carbaldehyde Transformation on V–Ti–O Catalysts. The Effect of Sulfate Content on β-Picoline Oxidation into Nicotinic Acid Full article
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Journal of Molecular Catalysis A: Chemical
ISSN: 1381-1169 |
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| Output data | Year: 2013, Volume: 380, Pages: 118-130 Pages count : 13 DOI: 10.1016/j.molcata.2013.09.028 | ||
| Tags | FTIR spectroscopy, Nicotinic acid, Sulfates, Vanadia-titania catalysts, β-Picoline oxidation | ||
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Abstract:
Surface complexes of β-picoline, 3-pyridine-carbaldehyde and nicotinic acid on 20 wt.% V2O5/TiO2 catalysts containing 0.07 and 6.3l wt.% SO42− were studied by FTIR spectroscopy and temperature programmed reaction technique. The water (both H2O and D2O), pyridine and β-picoline were used as molecular probes for identification of surface acidity and the structure of sulfate species. Both samples possess Lewis and Brönsted acidic sites. β-Picoline, 3-pyridine-carbaldehyde and nicotinic acid form surface complexes of similar structure on both studied catalysts. But high sulfated catalyst contains stronger Brönsted sites in greater amount. It leads to the formation of stronger bound surface complexes of β-picoline, 3-pyridine-carbaldehyde and nicotinic acid. The strongly bound surface complexes are transformed into by-products (COx, pyridine and 3-cyanopyridine). It resulted in substantial reduction of nicotinic acid yield.
Cite:
Chesalov Y.A.
, Andrushkevich T.V.
, Sobolev V.I.
, Chernobay G.B.
FTIR Study of β-Picoline and Pyridine-3-Carbaldehyde Transformation on V–Ti–O Catalysts. The Effect of Sulfate Content on β-Picoline Oxidation into Nicotinic Acid
Journal of Molecular Catalysis A: Chemical. 2013. V.380. P.118-130. DOI: 10.1016/j.molcata.2013.09.028 WOS Scopus РИНЦ ANCAN OpenAlex
FTIR Study of β-Picoline and Pyridine-3-Carbaldehyde Transformation on V–Ti–O Catalysts. The Effect of Sulfate Content on β-Picoline Oxidation into Nicotinic Acid
Journal of Molecular Catalysis A: Chemical. 2013. V.380. P.118-130. DOI: 10.1016/j.molcata.2013.09.028 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Jul 1, 2013 |
| Accepted: | Sep 20, 2013 |
| Published online: | Oct 1, 2013 |
| Published print: | Dec 1, 2013 |
Identifiers:
| Web of science: | WOS:000327686600017 |
| Scopus: | 2-s2.0-84886002558 |
| Elibrary: | 21883338 |
| Chemical Abstracts: | 2013:1748619 |
| Chemical Abstracts (print): | 160:33526 |
| OpenAlex: | W2024808497 |