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Preparation method for preparing cobalt-carbon catalyst through polymerization reaction and application of cobalt-carbon catalyst

A carbon catalyst, polymerization technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of limited industrial application, easy deactivation, high cost, and achieve high selectivity, High hydrogenation activity and high stability

Active Publication Date: 2021-09-03
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing furfuryl alcohol hydrogenation process mainly uses expensive noble metal catalysts, which are not only costly, but also easily deactivated in the acidic reaction system, which greatly limits the industrial application

Method used

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  • Preparation method for preparing cobalt-carbon catalyst through polymerization reaction and application of cobalt-carbon catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Mix 5.0g vanillin, 3.2g furfural, 3g cobalt oxalate and 70g water evenly and stir for 2 hours, then put it into a high-pressure reaction kettle, pour in 3Mpa nitrogen, heat for 8 hours, and the reacted suspension is centrifuged and washed for 100 Dry at ℃ for 10 hours to obtain the precursor of the cobalt-carbon catalyst. Grind the precursor into powder and put it into a tube furnace. Calcinate at 600℃ for 4 hours in a hydrogen atmosphere. After cooling down to room temperature, blow nitrogen for 30 minutes to take out the black solid, which is the cobalt-carbon catalyst;

[0024] Add 5g furfuryl alcohol, 50mL isopropanol, 0.5g cobalt carbon catalyst into the reaction kettle, hydrogen pressure 8MPa, react at 180°C for 10h, take out the suspension and centrifuge, take the supernatant, add acetone to dilute 10 times and test it with GC-MS , the conversion of furfuryl alcohol was 100%, and the yield of 1,4-pentanediol was 78.0%.

Embodiment 2

[0026] Mix 5.0g of vanillin, 1.6g of furfural, 0.5g of organic acid, 3g of cobalt oxalate and 70g of water and stir for 2 hours, then put it into a high-pressure reactor, pour in 3Mpa nitrogen, heat for 8 hours, and the reacted suspension is passed through After centrifugal washing, dry at 100°C for 6 hours to obtain the precursor of the cobalt-carbon catalyst. Grind the precursor into powder and put it into a tube furnace. Calcinate at 700°C for 3 hours in a hydrogen atmosphere. After cooling down to room temperature, blow nitrogen gas for 30 minutes to take out the black solid. is a cobalt carbon catalyst;

[0027] Add 10g of furfuryl alcohol, 50mL of isopropanol, and 1.0g of cobalt-carbon catalyst into the reaction kettle. The hydrogen pressure is 6MPa. After reacting for 20h at 190°C, take out the suspension and centrifuge it. Take the supernatant, add acetone and dilute it 10 times, and test it with GC-MS. , the conversion of furfuryl alcohol was 100%, and the yield of 1,...

Embodiment 3

[0029] Mix 2.5g of vanillin, 3.2g of furfural, 0.5g of organic acid, 3g of cobalt oxalate and 70g of water and stir for 2 hours, then put it into a high-pressure reactor, pour in 2Mpa nitrogen, heat for 3 hours, and the reacted suspension passes through After centrifugal washing, dry at 100°C for 8 hours to obtain the precursor of the cobalt-carbon catalyst. Grind the precursor into powder and put it into a tube furnace, and calcinate it at 500°C for 2 hours in a hydrogen atmosphere. is a cobalt carbon catalyst;

[0030] Add 5g of furfuryl alcohol, 50mL of isopropanol, and 0.5g of cobalt-carbon catalyst into the reaction kettle, hydrogen pressure is 6MPa, react at 210°C for 10h, take out the suspension and centrifuge, take the supernatant, add acetone to dilute it 10 times, and test it with GC-MS , the conversion of furfuryl alcohol was 100%, and the yield of 1,4-pentanediol was 50.5%.

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Abstract

The invention relates to the technical field of catalysts, in particular to a method for preparing a cobalt-carbon catalyst through a polymerization reaction and application of the cobalt-carbon catalyst, wherein the cobalt-carbon catalyst is obtained by using vanillin, furfural, organic acid and a cobalt salt as raw materials through solvothermal and high-temperature calcination treatment. According to the invention, the catalyst is applied to the hydrogenation reaction of furfuryl alcohol in an organic solvent to prepare 1, 2-pentanediol, wherein the reaction is carried out for 10 hours under the hydrogen pressure of 8 MPa and the temperature of 180 DEG C, the conversion rate of furfuryl alcohol is 100%, and the yield of 1, 4-pentanediol is 80.1%.

Description

technical field [0001] The invention relates to a preparation method and application of a cobalt-carbon catalyst. Background technique [0002] Furfuryl alcohol is a very useful biomass-based platform compound. It has a wide range of sources and is cheap. Furfuryl alcohol can be used as a raw material to further prepare γ-valerolactone, 1,2-pentanediol, and 1,4-pentanediol by hydrogenation reaction , 1,5 pentanediol and other high value-added chemicals have important application prospects and commercial value. The existing furfuryl alcohol hydrogenation process mainly uses expensive noble metal catalysts, which are not only costly, but also easily deactivated in the acidic reaction system, which greatly limits the industrial application. [0003] The carbon material has a rich pore structure and has a good adsorption effect, and can quickly absorb the raw materials for hydrogenation reaction to its surface for hydrogenation reaction. At the same time, the carbon support ha...

Claims

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Application Information

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IPC IPC(8): B01J23/75B01J37/10B01J37/08B01J37/18C07C29/132C07C31/20
CPCB01J23/75B01J37/10B01J37/082B01J37/18C07C29/132C07C31/20Y02P20/584
Inventor 胡勋孙恺孙艺凡邵月文高国明李庆银张丽君
Owner UNIV OF JINAN
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