Carbon-nanometer-tube-carried-Ru-based catalyst and preparing method and application thereof
A technology of carbon nanotubes and catalysts, which is applied in the fields of carbon nanotube-supported Ru-based catalysts and their preparation and application, can solve the problems of separation and purification difficulties, limited product market, side reactions, etc., and achieve wide sources, low raw material costs, The effect of high reactivity
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Embodiment 1
[0025] Weigh 3g of multi-walled carbon nanotubes TNSM2 into a three-necked flask filled with 150mL of concentrated nitric acid (68wt.%), reflux in an oil bath at 140°C for 14h, wash with water until neutral, and obtain open and truncated carbon nanotubes o-TNSM2; Take 100mgo-TNSM2 and add to 15mL (0.27mg / mL) of RuCl 3 In acetone solution, ultrasonic treatment (600W) for 4h, continuous stirring at room temperature to evaporate the acetone, then slowly heated to 110°C in the air to dry for 15h, and then reduced at 350°C for 4h under hydrogen atmosphere, recorded as Ru / TNSM2-in.
Embodiment 2
[0027] Weigh 4g of multi-walled carbon nanotubes TNSM3 and add them to a three-neck flask filled with 150mL of concentrated sulfuric acid (98.3wt.%), heat in an oil bath at 160°C for 12h, wash with water until neutral, and obtain open and truncated carbon nanotubes o-TNSM3 ; Get 120mgo-TNSM3 and join 20mL (0.27mg / mL) of RuCl 3 In the acetone solution, it was treated with ultrasonic (600W) for 3h, continuously stirred at room temperature to evaporate the acetone, then slowly heated to 100°C in the air to dry for 20h, and then reduced under hydrogen atmosphere at 450°C for 3h, recorded as Ru / TNSM3-in.
Embodiment 3
[0029] Weigh 4g of TNM2 into a three-necked flask containing 150mL of mixed acid (wherein V (concentrated sulfuric acid) / V (concentrated nitric acid) = 1 / 1) solution, heat in an oil bath at 160°C for 10 hours, wash with water until neutral, and obtain open and truncated Carbon nanotube o-TNM2; take 240mgo-TNM2 and add to 25mLRuCl 3 (0.27mg / mL) and NH 4 ReO 4 (0.08mg / mL) in acetone solution, ultrasonic treatment (600W) for 5h, continuous stirring at room temperature to evaporate the acetone, then slowly heated to 80°C in the air to dry for 24h, and then reduced at 400°C for 3h under hydrogen atmosphere, denoted as Ru / TNM2-in.
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