A kind of solid acid catalyst tip/atp and its preparation method and application
A solid acid catalyst, catalyst technology, applied in catalyst activation/preparation, catalyst carrier, chemical instruments and methods, etc., can solve the problems of not too high catalytic efficiency, low yield of target product, low catalytic efficiency, etc. Moderate, good market application prospects, stable structure
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Embodiment 1
[0030] The process flow diagram of the present invention is as figure 1 shown. Specifically, the original attapulgite is first sieved with a 100-mesh sieve to obtain relatively fine attapulgite particles. Weigh 20 g of crude ATP with a solid-to-liquid ratio of 1:10 (g / ml), add it to 5 mol / L hydrochloric acid, condense and reflux for 12 h under magnetic stirring at 80 ° C, and then let stand for 2 h. Then filter and wash until neutral (use silver nitrate solution to detect the presence of no chloride ions). Finally, the pretreated attapulgite was obtained by drying at 105°C for 12 hours.
[0031] 200mL concentration of 1mol / L precipitant (NH 4 ) 2 HPO 4 Added to 100mL concentration is 1mol / LTiCl 4 solution to form a mixed solution. Then, according to the ratio of TiP to ATP of 1:2, ATP after the above-mentioned pretreatment was added to the solution formed above, and then the solution was allowed to stir at room temperature for 24 h. Then the solution was filtered, wash...
Embodiment 2
[0033] Sieve the original attapulgite with a 100-mesh sieve to obtain finer attapulgite particles. Weigh 20 g of ATP crude product at a solid-to-liquid ratio of 1:10 (g / ml), add it to 5 mol / L nitric acid, condense and reflux for 12 h under magnetic stirring at 80 ° C, and then let stand for 2 h. Then filter and wash until neutral. Finally, the pretreated attapulgite was obtained by drying at 105°C for 12 hours.
[0034] 200mL concentration of 1mol / L precipitant (NH 4 ) 2 HPO 4 Added to 100mL concentration is 1mol / LTiCl 4 solution to form a mixed solution. Then, according to the ratio of TiP to ATP of 1:2, ATP after the above-mentioned pretreatment was added to the solution formed above, and then the solution was stirred at room temperature for 24 h. Then the solution was filtered, washed until the pH was around 5, and finally dried at 100°C for 12 hours. The catalyst obtained above was calcined at 500° C. for 3 h, and finally ground to form a solid acid catalyst TiP / ATP...
Embodiment 3
[0036] Sieve the original attapulgite with a 100-mesh sieve to obtain finer attapulgite particles. Weigh 20g of ATP crude product at a solid-to-liquid ratio of 1:10 (g / ml), add it to 5mol / L hydrochloric acid, condense and reflux for 12h under magnetic stirring at 80°C, and then let stand for 2h. Then filter and wash until neutral (use silver nitrate solution to detect the presence of no chloride ions). Finally, the pretreated attapulgite was obtained by drying at 105°C for 12 hours.
[0037] 200mL concentration of 1mol / L precipitant (NH 4 ) 2 HPO 4Added to 100mL concentration is 1mol / LTiCl 4 solution to form a mixed solution. Then, according to the ratio of TiP to ATP of 1:1, ATP after the above-mentioned pretreatment was added to the solution formed above, and then the solution was stirred at room temperature for 24 h. Then the solution was filtered, washed until the pH was around 5, and finally dried at 100°C for 12 hours. The catalyst obtained above was calcined at 5...
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