Title: Silsesquioxane-based homogeneous and heterogeneous epoxidation catalysts developed by using high-speed experimentation
Authors: Pescarmona, Paolo
van der Waal, Jan C
Maschmeyer, Thomas # ×
Issue Date: 27-Mar-2004
Publisher: VCH Verlagsgesellschaft
Series Title: Chemistry - a European Journal vol:10 issue:7 pages:1657-65
Abstract: A set of new titanium-silsesquioxane epoxidation catalysts was discovered by exploring the hydrolytic condensation of a series of trichlorosilanes in highly polar solvents by means of high-speed experimentation techniques. The most promising silsesquioxane leads were prepared on a conventional laboratory scale and fully characterised. The lead generated by the hydrolytic condensation of tBuSiCl(3) in DMSO consisted of a set of incompletely condensed silsesquioxane structures, whereas that obtained from the hydrolytic condensation of tBuSiCl(3) in water consisted of a single silsesquioxane structure, tBu(2)Si(2)O(OH)(4). This is the first reported example of the use of this silsesquioxane as a precursor for active Ti catalysts. The Ti complexes prepared with tBu(2)Si(2)O(OH)(4) were supported on silica to produce active heterogeneous epoxidation catalysts.
ISSN: 0947-6539
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Surface Chemistry and Catalysis
× corresponding author
# (joint) last author

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