Preparation and application of carbon-loaded nitrogen-coordinated ferrocobalt bimetallic catalyst for olefin hydroformylation reaction
A bimetallic catalyst, a technology that catalyzes olefin hydroformyl, is applied in the field of composite materials and chemical synthesis, and can solve problems such as catalyst loss
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Embodiment 1
[0021] Weigh 310 mg of cobalt nitrate and 108 mg of ferric nitrate and dissolve in 30 mL of ethanol, then add 0.93 g of chitosan, and stir at 60 °C for 12 hours. Then 1.0 g of activated carbon was added thereto, and after stirring at 25° C. for 24 hours, the solvent was removed from the above mixed solution under vacuum to obtain a solid mixture. The solidified mixture was taken out, and after drying at 80°C for 12 hours, 0.5 g of the obtained solid material was taken in an argon atmosphere, and the temperature was raised to 200°C at a rate of 3°C / min, and kept at a constant temperature for 12 hours, and then heated at a rate of 5°C / min The temperature was raised to 500 °C, kept at a constant temperature for 12 hours, and finally cooled to room temperature at 1 °C / min to obtain a carbon-supported nitrogen-coordinated cobalt-iron bimetallic material CoFe / NC-1, which was designated as catalyst A.
[0022] Take 100 mg of the above-prepared cobalt-iron bimetallic catalyst A and ad...
Embodiment 2
[0024] Weigh 30 mg of cobalt acetate and 310 mg of ferrous acetate and dissolve in 10 mL of acetonitrile, then add 0.60 g of urea, and stir at 10 °C for 24 hours. Then 1.0 g of activated carbon was added thereto, and after stirring at 100° C. for 0.5 hour, the solvent was removed from the above mixed solution under vacuum to obtain a solid mixture. Take out the solidified mixture, dry at 40°C for 48 hours, take 0.5 g of the resulting solid material in a carbon dioxide atmosphere, raise the temperature to 300°C at a rate of 5°C / min, and keep the temperature constant for 3 hours, then raise the temperature at a rate of 15°C / min To 1000 ℃, keep the temperature constant for 1 hour, and finally cool down to room temperature at 15 ℃ / min to obtain a carbon-supported nitrogen-coordinated cobalt-iron bimetallic material CoFe / NC-2, which is designated as catalyst B.
[0025] Take 100 mg of the above-prepared cobalt-iron bimetallic catalyst B and add it to a 100 mL reactor, add 5 mmol of...
Embodiment 3
[0027] Weigh 308 mg cobalt acetylacetonate and 282 mg iron acetylacetonate and dissolve in 20 mL dioxane, then add 1.26 g melamine to it, and stir at 25 °C for 5 hours. Then 1.0 g of activated carbon was added thereto, and after stirring at 60° C. for 12 hours, the solvent was removed from the above mixed solution under vacuum to obtain a solid mixture. Take out the solidified mixture, dry it at 100°C for 12 hours, take 0.5 g of the resulting solid material in a nitrogen atmosphere, raise the temperature to 350°C at a rate of 5°C / min, keep the temperature constant for 1 hour, and then raise the temperature at a rate of 5°C / min To 700 °C, keep the temperature constant for 2 hours, and finally cool down to room temperature at 10 °C / min to obtain a carbon-supported nitrogen-coordinated cobalt-iron bimetallic material CoFe / NC-3, which is designated as catalyst C.
[0028] Take 100 mg of the cobalt-iron bimetallic catalyst C prepared above and add it to a 100 mL reactor, add 5 mmol...
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