Catalyst for preparing 2, 2, 4, 4-tetramethyl-1, 3-cyclobutanediol with high cis-trans ratio, device and method thereof
A technology of cyclobutanediol and tetramethyl, applied in the field of catalyst preparation, can solve the problems of many by-products and low proportion
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preparation example 1
[0110] First, weigh 0.207g RuCl 3 The powder was dissolved in a mixed solution of 400mL of ethanol and 50mL of water. Then weigh 2.131 g of PVP solid powder and add it to the above mixed solution, stir fully for 2 hours at a stirring rate of 500 rpm / min to completely dissolve the PVP; Quickly add 80mL NaBH 4 Solution (24mmol·L -1 ), fully stirred (500rpm / min) and continued to react for 3h to obtain metal nano-Ru particle sol.
[0111] Secondly, adjust the temperature of the water bath to 40°C, add 5g γ-Al 2 o 3 Add it into the nano-Ru sol, and stir continuously for 48h; when the carrier turns black and the solution is clear, filter the solution, repeatedly suction filter, and wash with ethanol and water several times; vacuum-dry at 110°C for 12h, and then Baking for 3 hours, the heating rate is 2°C / min.
[0112] Finally, the prepared powder-supported catalyst was loaded into the die of a tablet press, and a pressure of 15 tons was set to press the catalyst powder into ta...
preparation example 2
[0114] First, weigh 0.207g RuCl 3 with 0.1785g Zn(NO 3 ) 2 ·6H 2 O powder was dissolved in a mixed solution of 400 mL of ethanol and 50 mL of water. Then weigh 2.131g of PVP solid powder and add it to the above mixed solution, fully stir for 2 hours, and the stirring rate is 500rpm / min, so that the PVP is completely dissolved;
[0115] Then, use a water bath to heat the temperature to 80°C, adjust the pH to 9-11, and quickly add 80mL of NaBH to the beaker 4 Solution (24mmol·L -1 ), fully stirred (500rpm / min) and continued to react for 3h to obtain a metal nanoparticle sol.
[0116] Secondly, adjust the temperature of the water bath to 40°C, add 5g γ-Al 2 o 3 Add it into the nano-Ru-Zn sol, and stir continuously for 48h; when the carrier turns black and the solution is clear, filter the solution, repeatedly suction filter, wash with ethanol and water several times; vacuum dry at 110°C for 12h, and Roasting at ℃ for 3h, heating rate 2℃ / min.
[0117] Finally, the prepare...
preparation example 3
[0119] First, weigh 2.45g Ni(NO 3 ) 2 ·6H 2 O powder was dissolved in a mixed solution of 400 mL of ethanol and 50 mL of water. Then weigh 2.131g of PVP solid powder and add it to the above mixed solution, fully stir for 2 hours, and the stirring rate is 500rpm / min, so that the PVP is completely dissolved;
[0120] Then, use a water bath to heat the temperature to 80 ° C, adjust the pH to 9-11, and quickly add 80 mL of NaBH to the beaker 4 Solution (24mmol·L -1 ), fully stirred (500rpm / min) and continued to react for 3h to obtain a Ni nanoparticle sol.
[0121] Secondly, the temperature of the water bath was adjusted to 40°C, and 5g of γ-Al 2 o 3 Add it into the nano-Ni sol, and stir continuously for 48 hours; when the carrier turns black and the solution is clear, filter the solution, repeatedly suction filter, and wash with ethanol and water for several times; vacuum-dry at 110°C for 12h, and then Baking for 3 hours, the heating rate is 2°C / min.
[0122] Finally, the...
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