Novel aminophosphonate ligand for the preparation of catalytically active silica aerogels with finely dispersed palladium

Silica-based aerogels bearing a novel aminophosphonate-containing substituent were prepared. Pd 2+ and Cu 2+ ions were introduced into aerogel matrix to form chelated complexes with aminophosphonate moiety. Both complexes securely retain Me 2+ after supercritical drying (SCD) in CO 2 . In silica mat...

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Bibliographic Details
Published in:Journal of porous materials 2023-04, Vol.30 (2), p.449-457
Main Authors: Sipyagina, Nataliya A., Malkova, Alena N., Straumal, Elena A., Yurkova, Lyudmila L., Baranchikov, Alexander E., Ivanov, Vladimir K., Lermontov, Sergey A.
Format: Article
Language:English
Subjects:
Catalysis
Catalytic activity
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Palladium
Physical Chemistry
Silica aerogels
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Summary:Silica-based aerogels bearing a novel aminophosphonate-containing substituent were prepared. Pd 2+ and Cu 2+ ions were introduced into aerogel matrix to form chelated complexes with aminophosphonate moiety. Both complexes securely retain Me 2+ after supercritical drying (SCD) in CO 2 . In silica matrix, Pd complex is reduced to metallic Pd after treatment by gaseous H 2 at 120 °C. In lyogel matrix, Pd complex can also be reduced to metallic Pd upon SCD in isopropanol. Pd-containing aerogel showed excellent catalytic activity in the reaction of C=C and C=Cbonds hydrogenation.
ISSN:1380-2224
1573-4854
DOI:10.1007/s10934-022-01357-4