Hydrochloric Acid → HCID 131719205, compound

Participants

Reaction Steps

A silicalite-titania-silica hybrid membrane was prepared using the sol gel technique and suction method as follows. A silicalite substrate was impregnated as in Example 1. 0.7892 g of 37% aqueous solution HCl was diluted in 31.0028 g of H2O and a mixture of 2.5560 g of Ti(OiPr)4 and 0.2080 g of Si(OEt)4 was added to the HCl--H2O solution drop wise with continuous stirring. A white hybrid titanium-silicon hydroxide precipitate was formed and the mixture was stirred for an additional hour. HNO3 was then added to the above mixture to bring the pH down from approximately 4 to below 2. Thereafter the mixture was sonicated in a supersonic bath at approximately 80° C. After approximately one hour of sonication, a highly dispersed, stable titania-silica hybrid colloidal suspension was obtained. A silicalite-titania-silica hybrid membrane was formed using the sol as in Example 1.

Provenance & Evidence