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Preparation method of NiB/PANI nanofiber catalyst and application thereof in hydrogen production by sodium borohydride hydrolysis

A nanofiber and composite nanofiber technology is applied in the field of synthesizing composite catalysts, which can solve the problems of poor recycling effect and low catalyst immobilization strength, and achieve the effects of reducing preparation cost, improving recycling rate, and easy and fast operation.

Inactive Publication Date: 2019-04-19
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned methods are all based on the carrier and immobilization methods to seek breakthroughs. Although some catalysts have better catalytic effects, the prepared catalysts have low immobilization strength and poor recycling effect.

Method used

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  • Preparation method of NiB/PANI nanofiber catalyst and application thereof in hydrogen production by sodium borohydride hydrolysis
  • Preparation method of NiB/PANI nanofiber catalyst and application thereof in hydrogen production by sodium borohydride hydrolysis
  • Preparation method of NiB/PANI nanofiber catalyst and application thereof in hydrogen production by sodium borohydride hydrolysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Using PS (polystyrene) and DMF (N, N-dimethylformamide) as raw materials, prepare a PS-DMF solution (polystyrene-dimethylformamide solution) with a concentration of 10.0 wt%, and pass through a magnetic stirrer Stir for 5-6 hours to obtain an electrospinning precursor solution. The precursor solution was placed in a syringe for electrospinning. The electrospinning process conditions were as follows: the voltage was 18kV; the speed of the receiver drum was 2000r / min; the receiving distance was 15cm. The prepared PS nanofibers were placed in a vacuum oven for 2-3 hours, and finally samples were taken for later characterization.

[0036] Soak the PS nanofibers prepared above in concentrated sulfuric acid for 4 hours, and carry out sulfonation reaction at a constant temperature of 40°C. After the reaction was finished, it was repeatedly washed with distilled water made in the laboratory, then filtered with suction, and then dried in vacuum for nearly 12 hours for later use...

Embodiment 2

[0039] Using PS (polystyrene) and DMF (N, N-dimethylformamide) as raw materials, prepare a PS-DMF solution (polystyrene-dimethylformamide solution) with a concentration of 12.5wt%, and pass through a magnetic stirrer Stir for 5-6 hours to obtain an electrospinning precursor solution. The precursor solution was placed in a syringe for electrospinning. The electrospinning process conditions were as follows: the voltage was 18kV; the speed of the receiver drum was 2000r / min; the receiving distance was 15cm. The prepared PS nanofibers were placed in a vacuum oven for 2-3 hours, and finally samples were taken for later characterization.

[0040] Soak the PS nanofibers prepared above in concentrated sulfuric acid for 4 hours, and carry out sulfonation reaction at a constant temperature of 40°C. After the reaction was finished, it was repeatedly washed with distilled water made in the laboratory, then filtered with suction, and then dried in vacuum for nearly 12 hours for later use....

Embodiment 3

[0043] Using PS (polystyrene) and DMF (N, N-dimethylformamide) as raw materials, prepare a PS-DMF solution (polystyrene-dimethylformamide solution) with a concentration of 15.0 wt%, and pass through a magnetic stirrer Stir for 5-6 hours to obtain an electrospinning precursor solution. The precursor solution was placed in a syringe for electrospinning. The electrospinning process conditions were as follows: the voltage was 18kV; the speed of the receiver drum was 2000r / min; the receiving distance was 15cm. The prepared PS nanofibers were placed in a vacuum oven for 2-3 hours, and finally samples were taken for later characterization.

[0044] Soak the PS nanofibers prepared above in concentrated sulfuric acid for 4 hours, and carry out sulfonation reaction at a constant temperature of 40°C. After the reaction was finished, it was repeatedly washed with distilled water made in the laboratory, then filtered with suction, and then dried in vacuum for nearly 12 hours for later use...

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Abstract

The invention belongs to the field of synthetic composite catalysts, in particular to a preparation method of a NiB / PANI nanofiber catalyst and the application thereof in the hydrogen production by sodium borohydride hydrolysis. The preparation method comprises the following steps: (1) dissolving polystyrene in N, N-dimethylformamide to prepare an electrospinning precursor solution A; (2) preparing polystyrene nanofiber B; (3) immersing the nanofiber B in the concentrated sulfuric acid to obtain sulfonated polystyrene nanometer, and rinsing and drying to obtain nanofiber C; (4) immersing nanofiber C in an aniline solution, adding ammonium persulfate to carry out a reaction to obtain composite nanofiber D; (5) immersing composite nanofiber D in tetrahydrofuran to obtain nanotube E; and (6)immersing the nanotube E in an aqueous solution of nickel source, and reducing the nickel source to NiB, namely the target product. The invention has the advantages of low investment cost, large specific surface area of the catalyst, good dispersibility, high stability, repeated use, and easy recycling.

Description

technical field [0001] The invention belongs to the field of synthetic composite catalysts, in particular to a method for preparing a NiB (NiB / PANI) catalyst supported by PANI nanotubes and its application in hydrogen production by hydrolysis of sodium borohydride. Background technique [0002] In recent years, with the continuous increase of energy demand, the development and utilization of hydrogen energy has been widely concerned by people. How to obtain a more efficient and safe hydrogen storage technology to increase the specific energy of hydrogen has become a bottleneck problem that needs to be solved urgently. Current hydrogen storage technologies fall into two categories: physical hydrogen storage and chemical hydrogen storage. Physical hydrogen storage technologies include high-pressure hydrogen storage, low-temperature liquefaction hydrogen storage, and adsorption hydrogen storage. Chemical hydrogen storage includes metal hydride hydrogen storage and organic liqui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28C01B3/04
CPCC01B3/04B01J31/28B01J35/23Y02E60/36
Inventor 邓雨钊李其明李芳刘力魁李佳刘文博孙爱玲
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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