PROCESS FOR PRODUCING TITANIUM-CONTAINING SILICON OXIDE CATALYST, THE CATALYST, AND PROCESS FOR PRODUCING OXIRANE COMPOUND WITH THE CATALYST

摘要

A process for producing a titanium-containing silicon oxide catalyst having a silicon-carbon-silicon bond, silicon-oxygen-silicon bond and silicon-oxygen-titanium bond, which comprises causing a silicon compound of the following formula (1) and a titanium alkoxide compound to gel in a water and/or alcohol solvent and removing the solvent in the resulted gel by extraction with a supercritical fluid: (wherein, R<1> to R<7> each independently represent a hydrocarbon group having 1 to 20 carbon atoms.).