Method for preparing cyclopentanone and cyclopentanol from furfural by hydrogenation
A technology of cyclopentanol and furfural, which is applied in chemical instruments and methods, preparation of heterocyclic compounds, preparation of hydroxyl compounds, etc., can solve the problems of non-conformity with green and sustainable development, poor selectivity of cyclopentanone, and difficult separation of products, and achieve It is beneficial to environmental protection, reduces production costs, and has low equipment requirements.
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[0018] Example 1
[0019] Weigh 1g furfural and 20mL water into a 50mL reactor, then add 0.5g catalyst (20% Ni-TiO 2 , Of which TiO 2 As a carrier, the active ingredient is Ni, and the weight percentage of the active ingredient Ni is 20%). Replace the air in the kettle with hydrogen three to four times, then fill with hydrogen to an initial pressure of 6MPa, turn on the stirring device at about 800r / min, heat to 140℃, react for 4h, then cool, the product is filtered or centrifuged, and then gas chromatography is used Perform quantitative analysis. As a result, the furfural conversion rate was 100%, the yield of cyclopentanone was 22%, and the yield of cyclopentanol was 35%.
Example Embodiment
[0020] Example 2
[0021] Weigh 1g furfural and 20mL water into a 50mL reactor, then add 0.5g catalyst (10%Co-10%Ni / TiO 2 , Of which TiO 2 As a carrier, the active ingredients are Co and Ni, and the weight percentages of the active ingredients Co and Ni are 10% respectively). Replace the air in the kettle with hydrogen three to four times, then fill with hydrogen to an initial pressure of 6MPa, turn on the stirring device at about 800r / min, heat to 140℃, react for 4h, and then cool. After the product is filtered or centrifuged, use gas chromatography Perform quantitative analysis. As a result, the furfural conversion rate was 100%, the yield of cyclopentanone was 51%, and the yield of cyclopentanol was 15%.
Example Embodiment
[0022] Example 3
[0023] Weigh 1g furfural and 20mL water into a 50mL reactor, then add 0.5g catalyst (20%Co / TiO 2 , Of which TiO 2 As a carrier, the active ingredient is Co, and the weight percentage of the active ingredient Co is 20%). Replace the air in the kettle with hydrogen three to four times, then fill with hydrogen to an initial pressure of 6MPa, turn on the stirring device at about 800r / min, heat to 140℃, react for 4h, and then cool. After the product is filtered or centrifuged, use gas chromatography Perform quantitative analysis. As a result, the furfural conversion rate was 100%, the yield of cyclopentanone was 41%, and the yield of cyclopentanol was 45%.
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