摘要:
A synthetic, crystalline, porous material is disclosed, together with the related preparation process. Such material of zeolitic nature containing oxides of silicon, titanium and gallium corresponds, in the calcined and anhydrous state, to the following empyrical formula: pHGaO₂ . qTiO₂ . SiO₂, wherein p has a value greater than zero and smaller than or equal to 0.050, and g has a value greater than zero and smaller than or equal to 0.025, and the H⁺ of HGaO₂ can be at least partially replaceable or replaced by cations.
摘要:
Zeolites having a pore diameter comprised within the range of from 5 to 12 Å are bonded with amorphous oligomeric silica, by dispersing them in an aqueous solution of silica and alkylammonium hydroxide, and submitting the obtained suspension to a quick drying.
摘要:
A crystalline, porous, synthetic material is disclosed, together with its related preparation process. Such a material of zeolitic character, containing silicon, titanium and aluminum oxides, corresponds, in its calcined and anhydrous state, to the following empirical formula: HAlO₂ . q TiO₂ . SiO₂ wherein p has a value greater than zero and lower than or equal to 0.050, q has a value greater than zero and lower than or equal to 0.025, and the H⁺ of HAlO₂ can be at least partly replaceable or replaced by cations.
摘要:
Zeolites having a pore diameter comprised within the range of from 5 to 12 Å are bonded with amorphous oligomeric silica, by dispersing them in an aqueous solution of silica and alkylammonium hydroxide, and submitting the obtained suspension to a quick drying.
摘要:
The invention discloses a catalyst on the basis of silicon and titanium having the form of microspheres and constituted by oligomeric silica and by titanium-silicalite crystals having an oligomeric silica titaniumsilicalite molar ratio comprised within the range of from 0.05 to 0.11, wherein the crystals of titanium-silicalite are encaged by means of Si-0-Si bridges.