CN113332984A - Preparation method and application of cobalt-carbon catalyst prepared by polymerization reaction - Google Patents

Preparation method and application of cobalt-carbon catalyst prepared by polymerization reaction Download PDF

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CN113332984A
CN113332984A CN202110550292.6A CN202110550292A CN113332984A CN 113332984 A CN113332984 A CN 113332984A CN 202110550292 A CN202110550292 A CN 202110550292A CN 113332984 A CN113332984 A CN 113332984A
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cobalt
carbon catalyst
catalyst
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reaction
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CN113332984B (en
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胡勋
孙恺
孙艺凡
邵月文
高国明
李庆银
张丽君
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University of Jinan
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/74—Iron group metals
    • B01J23/75—Cobalt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08—Heat treatment
    • B01J37/082—Decomposition and pyrolysis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08—Heat treatment
    • B01J37/10—Heat treatment in the presence of water, e.g. steam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/16—Reducing
    • B01J37/18—Reducing with gases containing free hydrogen
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
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    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
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    • Y02P20/584—Recycling of catalysts

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Abstract

The invention relates to the technical field of catalysts, in particular to a preparation method and application of a cobalt-carbon catalyst prepared by polymerization reaction. The catalyst is applied to hydrogenation reaction of furfuryl alcohol in an organic solvent to prepare 1, 2-pentanediol, and the reaction is carried out for 10h at 180 ℃ under the hydrogen pressure of 8MPa, wherein the conversion rate of furfuryl alcohol is 100 percent, and the yield of 1, 4-pentanediol is 80.1 percent.

Description

Preparation method and application of cobalt-carbon catalyst prepared by polymerization reaction
Technical Field
The invention relates to a preparation method and application of a cobalt-carbon catalyst.
Background
Furfuryl alcohol is a very useful biomass-based platform compound, has wide sources and low price, can be used as a raw material to further prepare high-value-added chemicals such as gamma-valerolactone, 1,2 pentanediol, 1,4 pentanediol, 1,5 pentanediol and the like through hydrogenation reaction, and has important application prospects and commercial values. The existing furfuryl alcohol hydrogenation process mainly uses expensive noble metal catalysts, not only has high cost, but also is easy to inactivate in an acid reaction system, and the industrial application is greatly limited.
The carbon material has rich pore structure and good adsorption effect, and can quickly adsorb the raw materials of the hydrogenation reaction to the surface of the carbon material for the hydrogenation reaction. Meanwhile, the carbon carrier has good dispersion effect on the metal active sites, so that the carbon carrier can still keep higher dispersion under the acidic condition. The biomass-based derivative is used for preparing the carbon material, the raw material source is rich and cheap, the high-efficiency and high-selectivity catalytic conversion of furfuryl alcohol to prepare the 1, 2-pentanediol can be realized, and the catalyst is simple in preparation process and has a good industrial prospect.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a preparation method of a cobalt-carbon catalyst prepared by polymerization reaction and application of the cobalt-carbon catalyst in furfuryl alcohol hydrogenation reaction.
In order to achieve the purpose, the invention provides the following technical scheme:
a preparation method of a cobalt-carbon catalyst prepared by polymerization reaction comprises the following steps: uniformly mixing 0-10 parts by mass of vanillin, 0-20 parts by mass of furfural, 0-5 parts by mass of organic acid, 1-10 parts by mass of cobalt salt and 20-200 parts by mass of water, stirring for 0.5-5h, putting into a high-pressure reaction kettle, heating for 0.5-8h under a nitrogen atmosphere, centrifugally washing and drying a reacted suspension, putting into a tubular furnace, and calcining for 1-8h at the temperature of 450-800 ℃ under a hydrogen atmosphere to obtain the cobalt-carbon catalyst.
The cobalt-carbon catalyst is characterized in that the organic acid comprises one of nitroformic acid, acetic acid, propionic acid and citric acid.
The cobalt-carbon catalyst is characterized in that the cobalt salt comprises one of cobalt nitrate, cobalt acetate and cobalt chloride.
The cobalt-carbon catalyst is characterized in that the initial pressure of nitrogen is 0.1-4 MPa.
The cobalt-carbon catalyst is characterized in that the calcination temperature in the hydrogen atmosphere is 450-800 ℃, and the calcination time is 1-8 h.
The application of the cobalt-carbon catalyst is characterized in that: the catalyst is applied to the hydrogenation reaction of furfuryl alcohol in an organic solvent to prepare 1, 2-pentanediol, wherein the hydrogenation reaction temperature is 130-220 ℃, the reaction time is 6-36h, and the hydrogen pressure is 3-10 MPa.
The preparation method of the invention has the following advantages and beneficial effects:
the solid acid catalyst developed by the invention is applied to the preparation of 1,2 pentanediol by furfural hydrogenation, and has high hydrogenation activity, high stability and high selectivity.
Drawings
FIG. 1 is a flow chart of the preparation of a cobalt carbon catalyst.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.
Comparative example 1
Uniformly mixing 10g of vanillin, 5g of organic acid, 5g of cobalt oxalate and 20g of water, stirring for 0.5h, putting into a high-pressure reaction kettle, flushing nitrogen with pressure of 4Mpa, heating for 0.5h, centrifugally washing the reacted suspension, drying at 100 ℃ for 10h to obtain a precursor of the cobalt-carbon catalyst, grinding the precursor into powder, putting into a tubular furnace, calcining at 450 ℃ for 8h under the atmosphere of hydrogen, cooling to room temperature, introducing nitrogen for 30min, and taking out a black solid, namely the cobalt-carbon catalyst;
adding 5g of furfuryl alcohol, 50mL of isopropanol and 0.5g of cobalt-carbon catalyst into a reaction kettle, reacting at 130 ℃ for 6 hours under the hydrogen pressure of 3MPa, taking out a suspension, centrifuging, taking a supernatant, adding acetone to dilute by 10 times, and testing by using GC-MS, wherein the conversion rate of the furfuryl alcohol is 100% and the yield of the 1,4 pentanediol is 8.5%.
Comparative example 2
Uniformly mixing 6.3g of furfural, 5g of organic acid, 5g of cobalt oxalate and 20g of water, stirring for 0.5h, placing the mixture into a high-pressure reaction kettle, flushing nitrogen with pressure of 4Mpa, heating for 0.5h, centrifugally washing the reacted suspension, drying at 100 ℃ for 10h to obtain a precursor of the cobalt-carbon catalyst, grinding the precursor into powder, placing the powder into a tubular furnace, calcining at 450 ℃ for 8h under the atmosphere of hydrogen, cooling to room temperature, introducing nitrogen for 30min, and taking out a black solid, namely the cobalt-carbon catalyst;
adding 5g of furfuryl alcohol, 50mL of isopropanol and 0.5g of cobalt-carbon catalyst into a reaction kettle, reacting at 130 ℃ for 6 hours under the hydrogen pressure of 3MPa, taking out a suspension, centrifuging, taking a supernatant, adding acetone to dilute by 10 times, and testing by using GC-MS, wherein the conversion rate of the furfuryl alcohol is 100% and the yield of the 1,2 pentanediol is 5.1%.
Example 1
Uniformly mixing 5.0g of vanillin, 3.2g of furfural, 3g of cobalt oxalate and 70g of water, stirring for 2 hours, putting into a high-pressure reaction kettle, flushing nitrogen with the pressure of 3Mpa, heating for 8 hours, centrifugally washing a suspension after reaction, drying at 100 ℃ for 10 hours to obtain a precursor of the cobalt-carbon catalyst, grinding the precursor into powder, putting into a tubular furnace, calcining at 600 ℃ for 4 hours under a hydrogen atmosphere, cooling to room temperature, introducing nitrogen for 30 minutes, and taking out a black solid, namely the cobalt-carbon catalyst;
adding 5g of furfuryl alcohol, 50mL of isopropanol and 0.5g of cobalt-carbon catalyst into a reaction kettle, reacting at 180 ℃ for 10 hours under the hydrogen pressure of 8MPa, taking out a suspension, centrifuging, taking a supernatant, adding acetone to dilute by 10 times, and testing by using GC-MS, wherein the conversion rate of the furfuryl alcohol is 100% and the yield of the 1,4 pentanediol is 78.0%.
Example 2
Uniformly mixing 5.0g of vanillin, 1.6g of furfural, 0.5g of organic acid, 3g of cobalt oxalate and 70g of water, stirring for 2 hours, putting into a high-pressure reaction kettle, flushing with 3Mpa of nitrogen, heating for 8 hours, centrifugally washing the reacted suspension, drying at 100 ℃ for 6 hours to obtain a precursor of the cobalt-carbon catalyst, grinding the precursor into powder, putting into a tube furnace, calcining at 700 ℃ for 3 hours under a hydrogen atmosphere, cooling to room temperature, introducing nitrogen for 30 minutes, and taking out a black solid, namely the cobalt-carbon catalyst;
adding 10g of furfuryl alcohol, 50mL of isopropanol and 1.0g of cobalt-carbon catalyst into a reaction kettle, reacting at 190 ℃ for 20 hours under the hydrogen pressure of 6MPa, taking out a suspension, centrifuging, taking a supernatant, adding acetone to dilute by 10 times, and testing by using GC-MS, wherein the conversion rate of the furfuryl alcohol is 100% and the yield of the 1,4 pentanediol is 65.2%.
Example 3
Uniformly mixing 2.5g of vanillin, 3.2g of furfural, 0.5g of organic acid, 3g of cobalt oxalate and 70g of water, stirring for 2 hours, putting into a high-pressure reaction kettle, flushing with 2MPa of nitrogen, heating for 3 hours, centrifugally washing the reacted suspension, drying at 100 ℃ for 8 hours to obtain a precursor of the cobalt-carbon catalyst, grinding the precursor into powder, putting into a tube furnace, calcining at 500 ℃ for 2 hours in a hydrogen atmosphere, cooling to room temperature, introducing nitrogen for 30 minutes, and taking out a black solid, namely the cobalt-carbon catalyst;
adding 5g of furfuryl alcohol, 50mL of isopropanol and 0.5g of cobalt-carbon catalyst into a reaction kettle, reacting at 210 ℃ for 10 hours under the hydrogen pressure of 6MPa, taking out a suspension, centrifuging, taking a supernatant, adding acetone to dilute by 10 times, and testing by using GC-MS, wherein the conversion rate of the furfuryl alcohol is 100% and the yield of the 1,4 pentanediol is 50.5%.
Example 4
Uniformly mixing 5.0g of vanillin, 3.2g of furfural, 0.5g of organic acid, 3g of cobalt oxalate and 70g of water, stirring for 2 hours, putting into a high-pressure reaction kettle, flushing with 3Mpa of nitrogen, heating for 8 hours, centrifugally washing the reacted suspension, drying at 100 ℃ for 10 hours to obtain a precursor of the cobalt-carbon catalyst, grinding the precursor into powder, putting into a tube furnace, calcining at 600 ℃ for 4 hours under a hydrogen atmosphere, cooling to room temperature, introducing nitrogen for 30 minutes, and taking out a black solid, namely the cobalt-carbon catalyst;
adding 5g of furfuryl alcohol, 50mL of isopropanol and 0.5g of cobalt-carbon catalyst into a reaction kettle, reacting at 180 ℃ for 10 hours under the hydrogen pressure of 8MPa, taking out a suspension, centrifuging, taking a supernatant, adding acetone to dilute by 10 times, and testing by using GC-MS, wherein the conversion rate of the furfuryl alcohol is 100% and the yield of the 1,4 pentanediol is 80.1%.
Example 5
Uniformly mixing 10g of vanillin, 20g of furfural, 5g of organic acid, 1g of cobalt oxalate and 200g of water, stirring for 5 hours, putting into a high-pressure reaction kettle, flushing nitrogen with the pressure of 0.5Mpa, heating for 8 hours, centrifugally washing the reacted suspension, drying at 100 ℃ for 6 hours to obtain a precursor of the cobalt-carbon catalyst, grinding the precursor into powder, putting into a tubular furnace, calcining at 800 ℃ for 1 hour under the atmosphere of hydrogen, cooling to room temperature, introducing nitrogen for 30min, and taking out a black solid to obtain the cobalt-carbon catalyst;
adding 5g of furfuryl alcohol, 50mL of isopropanol and 1.0g of cobalt-carbon catalyst into a reaction kettle, reacting at 190 ℃ for 36h under the hydrogen pressure of 10MPa, taking out a suspension, centrifuging, taking a supernatant, adding acetone to dilute by 10 times, and testing by using GC-MS, wherein the conversion rate of the furfuryl alcohol is 100% and the yield of the 1,4 pentanediol is 22.7%.
Example 6
Uniformly mixing 5.0g of vanillin, 3.2g of furfural, 0.5g of organic acid, 4g of cobalt nitrate and 70g of water, stirring for 2 hours, putting into a high-pressure reaction kettle, flushing with 3Mpa of nitrogen, heating for 8 hours, centrifugally washing the reacted suspension, drying at 100 ℃ for 8 hours to obtain a precursor of the cobalt-carbon catalyst, grinding the precursor into powder, putting into a tube furnace, calcining at 550 ℃ for 5 hours under a hydrogen atmosphere, cooling to room temperature, introducing nitrogen for 30 minutes, and taking out a black solid, namely the cobalt-carbon catalyst;
adding 5g of furfuryl alcohol, 50mL of isopropanol and 0.5g of cobalt-carbon catalyst into a reaction kettle, reacting at 180 ℃ for 10 hours under the hydrogen pressure of 8MPa, taking out a suspension, centrifuging, taking a supernatant, adding acetone to dilute by 10 times, and testing by GC-MS, wherein the conversion rate of the furfuryl alcohol is 100% and the yield of the 1,4 pentanediol is 77.1%.
Example 7
Uniformly mixing 5.0g of vanillin, 3.2g of furfural, 1.5g of organic acid, 4g of cobalt chloride and 70g of water, stirring for 2 hours, putting into a high-pressure reaction kettle, flushing with 3Mpa of nitrogen, heating for 8 hours, centrifugally washing the reacted suspension, drying at 100 ℃ for 8 hours to obtain a precursor of the cobalt-carbon catalyst, grinding the precursor into powder, putting into a tube furnace, calcining at 550 ℃ for 5 hours under a hydrogen atmosphere, cooling to room temperature, introducing nitrogen for 30 minutes, and taking out a black solid, namely the cobalt-carbon catalyst;
adding 5g of furfuryl alcohol, 50mL of isopropanol and 0.5g of cobalt-carbon catalyst into a reaction kettle, reacting at 180 ℃ for 10 hours under the hydrogen pressure of 8MPa, taking out a suspension, centrifuging, taking a supernatant, adding acetone to dilute by 10 times, and testing by GC-MS, wherein the conversion rate of the furfuryl alcohol is 100% and the yield of the 1,4 pentanediol is 77.1%.

Claims (6)

1. A preparation method for preparing a cobalt-carbon catalyst through polymerization reaction is characterized by mixing and stirring 0-10 parts by mass of vanillin, 0-20 parts by mass of furfural, 0-5 parts by mass of organic acid, 1-10 parts by mass of cobalt salt and 20-200 parts by mass of water for 0.5-5 hours, then placing the mixture into a high-pressure reaction kettle, heating the mixture for 0.5-8 hours under a nitrogen atmosphere, centrifugally washing and drying a suspension after reaction, then placing the suspension into a tubular furnace, and calcining the suspension for 1-8 hours at 800 ℃ under a hydrogen atmosphere and 450-minus-plus-minus temperature to obtain the cobalt-carbon catalyst.
2. The catalyst of claim 1, wherein the organic acid comprises one of nitroformic acid, acetic acid, propionic acid, and citric acid.
3. The catalyst of claim 1 wherein the cobalt salt comprises one of cobalt nitrate, cobalt acetate, and cobalt chloride.
4. The catalyst of claim 1 wherein the initial pressure of nitrogen is from 0.1 to 4 MPa.
5. The catalyst as claimed in claim 1, wherein the temperature of the calcination in a hydrogen atmosphere is 450-800 ℃ and the calcination time is 1-8 h.
6. Use of a cobalt carbon catalyst according to claim 1, characterized in that: the catalyst is applied to hydrogenation reaction of furfuryl alcohol in an organic solvent to prepare 1, 2-pentanediol, wherein the temperature of the hydrogenation reaction is 130-220 ℃, the reaction time is 6-36h, and the hydrogen pressure is 3-10 MPa.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN112403472A (en) * 2020-12-26 2021-02-26 齐鲁工业大学 Method for preparing carbon-based transition metal hydrogenation catalyst based on pyrolysis bio-oil

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CN102333911A (en) * 2009-02-27 2012-01-25 巴斯夫公司 Process for producing carbon nanofibres and/or carbon nanotubes
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CN102923687A (en) * 2011-08-11 2013-02-13 北京大学 Middle-pore carbon material and its preparation method
CN104370702A (en) * 2013-08-16 2015-02-25 中国科学院兰州化学物理研究所 Method for preparing 1,2-pentanediol by furfuryl alcohol liquid phase selectivity and hydrogenolysis
CN111087370A (en) * 2019-12-19 2020-05-01 华南理工大学 Method for preparing furfuryl alcohol by catalyzing furfural transfer hydrogenation through nitrogen-doped carbon loaded by non-noble metal
CN112403472A (en) * 2020-12-26 2021-02-26 齐鲁工业大学 Method for preparing carbon-based transition metal hydrogenation catalyst based on pyrolysis bio-oil

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