반응 #216566

반응 방정식

HCl

Ti(OiPr)4

Si(OEt)4

→

titanium-silicon hydroxide

용매

H2O

반응 조건

후처리

1. 1
   기타A silicalite-titania-silica hybrid membrane was prepared

실험 절차

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.

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