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A kind of solid acid catalyst, foam structure carbon material and preparation method

A technology of solid acid catalyst and foam structure, which is applied in the field of porous carbon materials, can solve the problems of low catalytic efficiency, etc., and achieve the effects of avoiding coking and carbonization, high process efficiency and low catalytic conversion temperature.

Active Publication Date: 2021-04-06
INST OF CHEM CHINESE ACAD OF SCI
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  • Description
  • Claims
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Problems solved by technology

[0005] In view of the above analysis, the embodiment of the present invention aims to provide a solid acid catalyst, a foam structure carbon material and a preparation method to solve the problem of the low catalytic efficiency of existing biomass pyrolysis catalysts and the inability to completely combine biomass pyrolysis oil. Problems in the reuse of precursor materials for the preparation of foam-structured carbon materials

Method used

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  • A kind of solid acid catalyst, foam structure carbon material and preparation method
  • A kind of solid acid catalyst, foam structure carbon material and preparation method
  • A kind of solid acid catalyst, foam structure carbon material and preparation method

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preparation example Construction

[0038] On the other hand, the present invention also provides a preparation method of solid acid catalyst tin-modified kaolinite, specifically comprising the following steps:

[0039] Step 1', dispersing the kaolinite powder with a particle size of 300-800 mesh (especially 500 mesh) in the crystalline tin chloride solution to form a suspension mixture, the mass fraction of the kaolinite powder in the suspension mixture is 10-20%, crystallization The mass fraction of tin chloride is 1.5 to 6%, and the rest is deionized water; the purpose of dispersing the kaolinite powder in the crystalline tin chloride solution is to allow the tin chloride solution to fully infiltrate and swell the kaolinite powder particles to control The mass fraction of kaolinite powder in the suspension mixture is 10-20% and the mass fraction of crystalline tin chloride is 1.5-6%, which is beneficial to realize the effective loading capacity of tin.

[0040] Step 2', dropwise add ammonia water with a mass co...

Embodiment 1

[0054] Fast-growing larch wood, rice straw, wheat straw, and corn stalk raw materials are preheated and dried and crushed to a particle size of 0.5mm. The sample characterization results for the preparation of fast-growing larch wood raw materials in Example 1 are as follows: figure 1 Shown; material and solid acid catalyst are mixed uniformly, and solid acid catalyst is 15% of biomass material quality. The catalytic liquefaction temperature range is 420°C, and the residence time of the mixture of biomass material and catalyst in the high temperature zone is 2 minutes. The liquefied product, that is, biomass pyrolysis oil, is collected by a water-cooled serpentine tube. After the solid catalyst is recovered, it is calcined in the air to remove the deposited carbon and then recycled.

[0055] Get 100g biomass pyrolysis oil and add its quality 5g of phenol, 5.2g of formaldehyde solution (mass concentration is 37%), until phenol dissolves completely, add the sodium alginate of bi...

Embodiment 2

[0059] The fast-growing larch wood raw material was preheated and dried, and then crushed to a particle size of 1.0 mm. The material was mixed evenly with a solid acid catalyst, and liquefied in the catalytic liquefaction temperature range. The liquefaction operating conditions are shown in Table 2. The liquefied product, that is, biomass pyrolysis oil, is collected by a water-cooled serpentine tube. After the solid catalyst is recovered, it is calcined in the air to remove the deposited carbon and then recycled.

[0060] Get 100g of biomass pyrolysis oil and add its quality 10g of phenol, 13g of formaldehyde solution (mass concentration is 37%), until phenol is completely dissolved, add the sodium alginate of biomass pyrolysis oil quality 1.0g in the system, form High viscosity mixture.

[0061] Dissolve biomass pyrolysis oil, 1.2 g of Span-20, and 4 g of liquid paraffin into each other, then add to the above biomass pyrolysis oil mixture, and stir to form a microemulsion sus...

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Abstract

The invention relates to a solid acid catalyst, a carbon material with a foam structure and a preparation method, which belongs to the technical field of porous carbon materials, and solves the problem of low catalytic efficiency of existing biomass pyrolysis catalysts and the inability to utilize all components of biomass pyrolysis oil. The problem of precursor materials for the preparation of foam-structured carbon materials. The preparation method of the foam structure carbon material includes: step 1, crushing and drying the biomass raw material and mixing it with a solid acid catalyst; step 2, placing the mixture in a liquefaction reactor, collecting the liquefaction product of biomass catalytic pyrolysis, that is, biomass heat Decomposing oil; step 3, adding phenol, formaldehyde and sodium alginate to the pyrolysis biomass pyrolysis oil in sequence to form a mixture; step 4, adding Span-20 and liquid paraffin to the mixture to form a microemulsion suspension system, and heating and curing to form; Step 5, heat-treating the molded product. The foam structure carbon material can be applied to thermal energy storage, high-performance electrodes and sensing materials, gas adsorption carbon molecular sieves and sound insulation and shock absorption materials.

Description

technical field [0001] The invention relates to the technical field of porous carbon materials, in particular to a solid acid catalyst, a foam structure carbon material and a preparation method. Background technique [0002] Biomass is an organic substance that stores light energy in the form of chemical energy, and its main components include: hemicellulose, cellulose, and lignin. The history of human use of charcoal can be traced back thousands of years ago, and today biomass materials are also the main raw materials for the production of activated carbon. Biomass resources are the most abundant renewable carbon resources on the earth, but they have various forms and relatively complex components. If they are used as precursors for the preparation of today's carbon materials, the biomass raw materials must be homogenized. [0003] The current technology for the homogeneous treatment of biomass resources mainly adopts thermochemical conversion processes: gasification proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/14C01B32/05
CPCB01J23/14C01P2004/03C01P2004/30C01P2006/12C01P2006/13C01P2006/16C01B32/05
Inventor 李峰波袁国卿宋延林
Owner INST OF CHEM CHINESE ACAD OF SCI
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