Preparation method of N-alkyl arylamine
A technology of alkylarylamine and nitrobenzene is applied in the field of preparation of N-alkylarylamine, which can solve the problems of low reaction efficiency and high equipment requirements, and achieve the effects of simple process flow, low equipment requirements and lower production costs.
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Embodiment 1
[0021] Embodiment 1 adsorption method prepares PtSn / Al 2 o 3 catalyst
[0022] ① Put γ-Al 2 o 3 Calcined at 500°C for 3 hours to obtain the carrier; add 3 g of the carrier to 10 ml of 1.16 mg / ml SnCl 2 2H 2 O aqueous solution, magnetically stirred for 1 hour, soaked overnight, then stirred and evaporated to dryness in a water bath at 60 °C, and calcined at 350 °C for 3 hours to obtain Sn / Al 2 o 3 3g; ②Mix 2.36g of dibenzylideneacetone, 2.8g of sodium acetate and 60ml of ethanol, stir and dissolve at 50°C, add mass concentration of 10% K 2 PtCl 4 12ml of aqueous solution, heated to 90°C and refluxed for 2 hours, stopped heating, stirred and cooled to room temperature, stood overnight, filtered, washed the filter cake with distilled water, then washed with n-pentane, and filtered again, the filter cake was the precursor Pt 2 (dba) 3 1.5g; ③ the precursor Pt 2 (dba) 3 84mg was added 120ml propylene carbonate solution, reacted in a stainless steel reactor at 1500rad / m...
Embodiment 2
[0023] Embodiment 2 prepares PtSn / Al 2 o 3 catalyst
[0024] ① Put γ-Al 2 o 3 Calcined at 500°C for 3 hours to obtain the carrier; add 3 g of the carrier to 10 ml of 0.58 mg / ml SnCl 2 2H 2 O aqueous solution, magnetically stirred for 1 hour, soaked overnight, then stirred and evaporated to dryness in a water bath at 60 °C, and calcined at 350 °C for 3 hours to obtain Sn / Al 2 o 3 3g; ②Mix 2.36g of dibenzylideneacetone, 2.8g of sodium acetate and 60ml of ethanol, stir and dissolve at 50°C, add mass concentration of 10% K 2 PtCl 4 12ml of aqueous solution, heated to 90°C and refluxed for 2 hours, stopped heating, stirred and cooled to room temperature, stood overnight, filtered, washed the filter cake with distilled water, then washed with n-pentane, and filtered again, the filter cake was the precursor Pt 2 (dba) 3 1.5g; ③ the precursor Pt 2 (dba) 3 Add 120ml propylene carbonate solution to 42mg, and react in a stainless steel reactor at 1500rad / min, 4.0MPa, room te...
Embodiment 3
[0025] Embodiment 3 prepares PtSn / Al 2 o 3 catalyst
[0026] ① Put γ-Al 2 o 3 Calcined at 500°C for 3 hours to obtain the carrier; add 3 g of the carrier to 10 ml of 1.73 mg / ml SnCl 2 2H 2 In O, magnetically stirred for 1 hour, immersed overnight, then evaporated to dryness with stirring in a water bath at 60°C, and calcined at 350°C for 3 hours to obtain the Sn / Al 2 o 3 3g; ②Mix 2.36g of dibenzylideneacetone, 2.8g of sodium acetate and 60ml of ethanol, stir and dissolve at 50°C, add mass concentration of 10% K 2 PtCl 4 12ml of aqueous solution, heated to 90°C and refluxed for 2 hours, stopped heating, stirred and cooled to room temperature, stood overnight, filtered, washed the filter cake with distilled water, then washed with n-pentane, and filtered again, the filter cake was the precursor Pt 2 (dba) 3 1.5g; ③ the precursor Pt 2 (dba) 3 Add 120ml propylene carbonate solution to 84mg, react in a stainless steel reactor at 1500rad / min, 4.0MPa, and room temperatu...
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