Ti-pillared clay based vandia catalyst and process for preparation
A pillared clay and catalyst technology, applied in the direction of molecular sieve catalysts, chemical instruments and methods, heterogeneous catalyst chemical elements, etc., can solve the problems of not finding references, etc.
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Embodiment 1
[0041] Preparation of Ti-pillared clay
[0042] TiO was synthesized by pillaring montmorillonite / bentonite (sodium ion-exchanged) with a partially hydrolyzed titanium-polycation solution 2 - PILC (titanium pillared clay). By adding TiCl 4 The concentrated solution was added to 2 molar HCl (hydrochloric acid) to prepare the Ti-polycation. The mixture was then diluted by the slow addition of water under constant stirring so that the final concentration of titanium in solution was 0.82 molar and the final concentration of HCl was 0.6 molar.
[0043]Disperse 8 g of sodium exchanged clay in 2 liters of distilled water. The slurry was stirred by a mechanical stirrer for 8 hours. The titanium polycation pillaring reagent was slowly added to the slurry at 90°C under vigorous stirring. The solution contained 10 mmol titanium / g clay. The resulting solution was stirred for an additional 4 hours. The solution was left at room temperature for 18 hours. The resulting substance was f...
Embodiment 2
[0050] Preparation of Ti-pillared clay
[0051] TiO was synthesized by pillaring montmorillonite / bentonite (sodium ion-exchanged) with a partially hydrolyzed titanium-polycation solution 2 - PILC (titanium pillared clay). By adding TiCl 4 The concentrated solution was added to 2 molar HCl (hydrochloric acid) to prepare the Ti-polycation. The mixture was then diluted by the slow addition of water under constant stirring so that the final concentration of titanium in solution was 0.82 molar and the final concentration of HCl was 0.6 molar.
[0052] Disperse 8 g of sodium exchanged clay in 2 liters of distilled water. The slurry was stirred by a mechanical stirrer for 8 hours. The titanium polycation pillaring reagent was slowly added to the slurry at 90°C under vigorous stirring. The solution contained 10 mmol titanium / g clay. The resulting solution was stirred for an additional 4 hours. The solution was left at room temperature for 18 hours. The resulting substance was ...
Embodiment 3
[0058] Preparation of Ti-pillared clay
[0059] TiO was synthesized by pillaring montmorillonite / bentonite (sodium ion exchange) with a partially hydrolyzed titanium-polycation solution 2 - PILC (titanium pillared clay). By adding TiCl 4 The concentrated solution was added to 2 molar HCl (hydrochloric acid) to prepare the Ti-polycation. The mixture was then diluted by the slow addition of water under constant stirring so that the final concentration of titanium in solution was 0.82 molar and the final concentration of HCl was 0.6 molar.
[0060] Disperse 8 g of sodium exchanged clay in 2 liters of distilled water. The slurry was stirred by a mechanical stirrer for 8 hours. The titanium polycation pillaring reagent was slowly added to the slurry at 90°C under vigorous stirring. The solution contained 10 mmol titanium / g clay. The resulting solution was stirred for an additional 4 hours. The solution was left at room temperature for 18 hours. The resulting substance was f...
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