Process for the preparation of sulfonate and mercapto groups containing inorganic support material for use as catalysts

摘要

A silica based solid material is claimed, which is modified on its surface with organosilicon compounds of formula ((RO)ySiR<1>-SO3<->)xM(power x<+>) (I) and (RO)ySi-R<2>-SH (II). R<1>, R<2> = independently 1-12 C alkylene, 5-8 C cycloalkylene or units of formula (IIIa) or (IIIb); m, n = 0-6; M<+> = H<+>, NH4<+> or a metal ion with a valency of 1-4; H<+> provides at least 5% of the ion exchange capacity of (I); y = 1-3; and R = independently H, CH3, CH2CH3 or propyl.