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A kind of biporous nickel-based catalyst, its preparation method and its application in methane carbon dioxide reforming reaction

A nickel-based catalyst and reforming reaction technology, applied in the field of porous materials, can solve the problems of not being suitable for large-scale production and high preparation costs, and achieve the effects of solving the problem of carbon deposition, low cost, and conducive to mass transfer

Active Publication Date: 2021-03-30
NINGXIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Tao Kai et al prepared a series of Pt / SiO 2 Dual-porous catalysts are used in methane carbon dioxide reforming reactions, but are not suitable for large-scale production due to their high preparation costs

Method used

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  • A kind of biporous nickel-based catalyst, its preparation method and its application in methane carbon dioxide reforming reaction
  • A kind of biporous nickel-based catalyst, its preparation method and its application in methane carbon dioxide reforming reaction
  • A kind of biporous nickel-based catalyst, its preparation method and its application in methane carbon dioxide reforming reaction

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preparation example Construction

[0028] The invention provides a kind of preparation method of biporous nickel-based catalyst, comprising the following steps:

[0029] (1) After mixing triblock copolymer P123, nickel source, and aluminum source in an organic solvent, add concentrated nitric acid, and then add polystyrene microsphere dispersion liquid to obtain a mixed material liquid;

[0030] (2) Drying and calcining the mixed material liquid obtained in the step (1) in sequence to obtain a dual-porous nickel-based catalyst.

[0031] All raw materials of the present invention are commercially available goods.

[0032] In the invention, after mixing the triblock copolymer P123, nickel source and aluminum source in an organic solvent, concentrated nitric acid is added, and then polystyrene microsphere dispersion liquid is added to obtain a mixed material liquid. In the present invention, the nickel source preferably includes nickel nitrate, and the aluminum source preferably includes aluminum isopropoxide. I...

Embodiment 1

[0048] Weigh 3.0125g of tri-block copolymer P1233, dissolve in 60.0mL of absolute ethanol, stir until dissolved, weigh 0.4836g of nickel nitrate and dissolve in the above solution and continue to stir, then weigh 6.1236g of aluminum isopropoxide and dissolve in the solution Stirring was continued in the middle, and 4.5mL concentrated nitric acid was added dropwise and vigorously stirred for 5h. Add 3.0 mL of polystyrene microsphere dispersion (10% solid content) to the above solution, and continue stirring for 5 min. Dry at 60°C for 3 days and calcined at 700°C for 4h to prepare a dual-porous nickel-based catalyst, abbreviated as 6%Ni-M100-MA-EISA, in which the nickel loading is 6wt.%.

Embodiment 2

[0050] Weigh 3.1628g of triblock copolymer P1233.1628g, dissolve in 60.0mL of absolute ethanol, stir until dissolved, weigh 0.3186g of nickel nitrate and dissolve in the above solution and continue stirring, then weigh 6.1205g of aluminum isopropoxide and dissolve in the solution Stirring was continued in the middle, and 4.5mL concentrated nitric acid was added dropwise and vigorously stirred for 5h. Add 3.0 mL of polystyrene microsphere dispersion (50% solid content) to the above solution, and continue stirring for 5 min. Dry at 60°C for 3 days and calcined at 700°C for 4h to prepare a dual-porous nickel-based catalyst, abbreviated as 4%Ni-M100-MA-EISA, in which the nickel loading is 4wt.%.

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Abstract

The invention provides a dual-pore nickel based catalyst, a preparation method thereof and application thereof in methanol carbon dioxide reforming reaction and belongs to the field of porous materials. The dual-pore nickel based catalyst has two pores like mesopores and macropores in structure, and specific surface area of the mesoporous pores is large, so that improving of activity of the catalyst is facilitated, and raw material conversion rate is increased; the macroporous pores are conducive to mass transfer of reactant molecules, so that the problem of catalyst carbon deposition can be solved effectively. Noble metal is not needed, so that the dual-pore nickel based catalyst is low in cost. Embodiment results show that the catalyst is applied in methanol carbon dioxide reforming reaction, carbon deposition amount of the catalyst can be lowered to 5wt.%, and the problem of catalyst carbon deposition is solved effectively.

Description

technical field [0001] The invention relates to the field of porous materials, in particular to a double-hole nickel-based catalyst, a preparation method thereof and an application in methane carbon dioxide reforming reaction. Background technique [0002] The methane carbon dioxide reforming reaction uses two greenhouse gases as carbon sources at the same time, which is of great significance for solving environmental problems; at the same time, the H produced by the reaction 2 The / CO ratio is low, so it can be directly used as a raw material for F-T synthesis and methane synthesis; in addition, this reaction is a reversible reaction with a large reaction heat, so this reaction can be used as an energy storage medium. However, at present, the methane carbon dioxide reforming reaction cannot be industrialized. The main reason is the deactivation of the catalyst, and the main reason for the deactivation is the carbon deposition of the catalyst. It will also cause the pulveri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755B01J35/10C01B3/40
CPCB01J23/755B01J35/1061B01J35/1066B01J37/0018C01B3/40C01B2203/0238Y02P20/52
Inventor 马清祥韩昀杏赵天生张建利高新华范辉
Owner NINGXIA UNIVERSITY
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