Preparation method of nano-iron catalyst for catalyzing hydrolysis and dehydrogenation of ammonia borane
A technology for catalyzing ammonia borane and nano-iron, which is applied in the field of hydrogen storage materials, can solve the problems of cumbersome methods, no high-efficiency catalytic performance of iron nano-particle catalysts, etc., and achieves the effects of high catalytic activity and excellent cycle stability.
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Embodiment 1
[0015] Take anhydrous ferrous chloride (0.5 mmol, 0.068 g) powder and place it in a 50 mL Schlenk reaction bottle, and carry out several pumping and ventilation of the reaction bottle at room temperature under a double-row tube to fill the reaction bottle with nitrogen, and add 10 mL The tetrahydrofuran stirred solution became white, and after ultrasonic dispersion for 10 min, continued stirring and added the reducing agent tetrahydrofuran borane solution (5 mL, c =1 mol / L), continue to sonicate for 30 min and stir the reaction overnight, the resulting black solid product is centrifuged and purified, and then washed with water for three times, and the black solid product obtained after washing is placed in a vacuum drying oven at 60 The nano-iron catalyst that catalyzes the hydrolytic dehydrogenation of ammonia borane was obtained by drying at ℃ overnight.
Embodiment 2
[0017] Take anhydrous ferric chloride (0.5 mmol, 0.081 g) powder and place it in a 50 mL Schlenk reaction flask, and carry out several pumping and ventilation of the reaction flask at room temperature under a double-row tube to fill the reaction flask with nitrogen, and add 10 mL of tetrahydrofuran Stir the solution to become white, and after ultrasonic dispersion for 10 min, continue to stir and add the reducing agent tetrahydrofuran borane solution (5 mL, c =1 mol / L), continue to sonicate for 30 min and stir the reaction overnight, the resulting black solid product is centrifuged and purified, and then washed with water for three times, and the black solid product obtained after washing is placed in a vacuum drying oven at 60 The nano-iron catalyst that catalyzes the hydrolytic dehydrogenation of ammonia borane was obtained by drying at ℃ overnight.
Embodiment 3
[0019] Anhydrous ferrous chloride (0.5 mmol, 0.068 g) powder was placed in a 50 mL Schlenk reaction flask, and the reaction flask was pumped and ventilated several times at 10 °C under a double row tube to fill the reaction flask with nitrogen, and 10 The stirred solution in mL tetrahydrofuran was white, and after ultrasonic dispersion for 10 min, continued stirring and added the reducing agent tetrahydrofuran borane solution (5 mL, c =1 mol / L), continue to sonicate for 30 min and stir the reaction overnight, the resulting black solid product is centrifuged and purified, and then washed with water for three times, and the black solid product obtained after washing is placed in a vacuum drying oven at 60 The nano-iron catalyst that catalyzes the hydrolytic dehydrogenation of ammonia borane was obtained by drying at ℃ overnight.
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