Comparative behavior of silica-embedded tert-butyldimethylsilyltrifluoro-methanesulfonate and lanthanum triflate catalysts

Parvulescu, AN;Gagea, BC;Parvulescu, V;Parvulescu, VI;Grange, Paul;et.al.
(2002) International Symposium on Acid-Base Catalysis IV (ABC IV) — Location: MATSUYAMA(Japan) (7.May.2001)

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Authors
  • Parvulescu, AN
    Author
  • Gagea, BC
    Author
  • Parvulescu, V
    Author
  • Parvulescu, VI
    Author
  • Poncelet, GeorgesUCLouvain
    Author
  • Grange, PaulUCLouvain
    Author
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Abstract
A series of hybrid catalysts containing tert-butyldimethylsilyltrifluoro-methanesulfonate (BDMST) or lanthanum triflate (LaT), hex adecyltrimethylammonium bromide and silica were obtained by sol-gel immobilization. The catalysts were characterized by nitrogen adsorption-desorption isotherms at 77 K, TG-DTA, H-1, C-13, and Si-29 solid state MAS-NMR, XRD, TEM, scanning electron microscopy (SEM), XPS and, FT-IR after adsorption of NH3. The catalytic tests were carried out in the reaction of the methyl ester of 1-cyclopentenylacetic acid in various solvents. The results revealed a completely different behavior of the hybrid catalysts compared with catalysts without surfactant or with free tert-butyldimethylsilyltrifluoro-methanesulfonate, or lanthanum triflate, or triflic acid, indicating a behavior for a typical heterogeneous catalyst. (C) 2002 Elsevier Science B.V. All rights reserved.
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Parvulescu, A., Gagea, B., Parvulescu, V., Parvulescu, V., Poncelet, G., & Grange, P. (2002). Comparative behavior of silica-embedded tert-butyldimethylsilyltrifluoro-methanesulfonate and lanthanum triflate catalysts. Catalysis Today, 73(1-2), 177-185. https://hdl.handle.net/2078.5/80310 (Original work published 2002)