Non-hydrolytic sol–gel routes based on alkyl halide elimination: toward better mixed oxide catalysts and new supports: Application to the preparation of a SiO2–TiO2 epoxidation catalyst

摘要: Abstract The first part of this article is a concise review on non-hydrolytic sol-gel routes based alkyl halide elimination. molecular chemistry founding these presented, as well examples applications to the synthesis oxides and mixed that may be interest catalysts or supports. In second part, straightforward preparation SiO2 –TiO2catalyst (not involving supercritical drying) reported. resulting SiO2–TiO2 calcined xerogel was highly homogeneous displayed high BET surface area located mainly in mesopore region. Preliminary tests epoxidation cyclohexene by cumene hydroperoxide indicated good selectivity activity.