Synthesis of Novel Perfluoroalkylglucosides on Zeolite and Non-Zeolite CatalystsReportar como inadecuado




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1

Institute of Heavy Organic Synthesis -Blachownia-, Energetyków St. 9, 47-225 Kędzierzyn-Koźle, Poland

2

Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek St. 8, 30-239 Kraków, Poland





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Authors to whom correspondence should be addressed.



Academic Editor: Geoffrey L. Price

Abstract Perfluoroalkylglucosides comprise a very important class of fluorine-containing surfactants. These compounds can be synthesized by using the Fisher reaction, starting directly from glucose and the required perfluoroalcohols. We wish to report on the use of zeolite catalysts of different structure and composition for the synthesis of perfluoroalkylglucosides when using glucose and 1-octafluoropentanol as substrates. Zeolites of different pore architecture have been chosen ZSM-5, ZSM-12, MCM-22 and Beta. Zeolites were characterized by XRD, nitrogen sorption, scanning electron microscopy SEM and solid-state 27Al MAS NMR spectroscopy. The activity of the zeolite catalysts in the glycosidation reaction was studied in a batch reactor at 100 °C below atmospheric pressure. The performance of zeolites was compared to other catalysts, an ion-exchange resin Purolite and a montmorillonite-type layered aluminosilicate. The catalytic performance of zeolite Beta was the highest among the zeolites studied and the results were comparable to those obtained over Purolite and montmorillonite type catalysts. View Full-Text

Keywords: perfluoroalkylglucosides; Fischer reaction; zeolites; ion-exchange resin; montmorillonite perfluoroalkylglucosides; Fischer reaction; zeolites; ion-exchange resin; montmorillonite





Autor: Janusz Nowicki 1,* , Łukasz Mokrzycki 2 and Bogdan Sulikowski 2,*

Fuente: http://mdpi.com/



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