Registration Number
0221U100539,
0120U104981
, R & D reports
Title
New effective zeolite catalysts for environmentally friendly processes of the conversion of renewable raw materials into valuable organic compounds
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Head
Shcherban Nataliia D., Кандидат хімічних наук
Registration Date
07-01-2021
Organization
L. V. Pisarzhevskii Institute Of Physical Chemistry of The National Academy of Sciences of Ukraine
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A series of hierarchical Beta zeolites with developed porosity and regulated acidic characteristics was synthesized and the influence of their structure on the catalytic activity in Prins cyclization between (–)-isopulegole and acetone was found. When using such samples in one-pot cascade, environmentally friendly Prins-Friedel-Crafts reaction between butyraldehyde with 3-buten-1-ol and anisole under mild conditions (60 °C), the desired products (4-(2(4)-methoxyphenyl)-2-propyltetrahydropyrans) were obtained at high yield (up to 51%). The method of potentiometric titration of hydrogen forms of hierarchical zeolites of different structure was optimized and the pKa of acid sites by the Gran method was determined. The catalytic activity of hierarchical zeolites in the dehydration reaction of a number of substituted 4-brom-2-alkyl-2,3-dihydro-1H-inden-1-ols with the obtaining of the corresponding indenes (yield up to 98%) was tested.
Product Description
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Valigura Karina V
Kurmach Mykhailo M.
Shvets Oleksiy V
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2021-03-17
