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Pyridyl cobalt phthalocyanine-cobalt compound/graphene composite material and preparation method thereof

A pyridyl cobalt phthalocyanine, composite material technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of poor activity and stability, noble metal nanocatalysts The production cost is high, and the synthesis method is simple and feasible, excellent catalytic activity, and good catalytic stability.

Inactive Publication Date: 2014-08-13
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved in the present invention is that the noble metal nanocatalyst (mainly Pt) has the defects of high production cost, poor activity and stability

Method used

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  • Pyridyl cobalt phthalocyanine-cobalt compound/graphene composite material and preparation method thereof
  • Pyridyl cobalt phthalocyanine-cobalt compound/graphene composite material and preparation method thereof
  • Pyridyl cobalt phthalocyanine-cobalt compound/graphene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Disperse 0.5g of graphite and 0.5g of sodium nitrate in 42.32g of concentrated sulfuric acid, slowly add 3g of potassium permanganate under mechanical stirring at 0°C; stir in a water bath at 35°C for 1 hour; add 40g of water, and After stirring at 90°C for 30min, add 100g of water and 4.44g of 30% hydrogen peroxide (H 2 o 2 ) after suction filtration, washing with water and centrifugation until the centrifuged water is neutral, vacuum drying at 45° C. for 12 hours to obtain graphite oxide;

[0030] (2) Disperse 0.1 g of the graphite oxide in 100 g of water to form a graphite oxide aqueous solution; add 0.5 g of sodium polystyrene sulfonate after ultrasonic oscillation of the graphite oxide aqueous solution for 4 h and continue ultrasonication for 1 h, add 1.03 g of hydrazine hydrate React at 100°C for 24 hours, cool to room temperature, centrifuge, and wash with water and ethanol to obtain graphene.

[0031] figure 1 Curve a is the ultraviolet-visible absorption...

Embodiment 2

[0033] Add 0.011mol of 4-hydroxypyridine and 0.01mol of 4-nitrophthalonitrile to 60mL of N,N-dimethylformamide (DMF), in N 2 Under the protection of air, add 0.044mol sodium carbonate in 3 batches, stir the reaction at 80°C for 8 hours, pour it into deionized water after cooling to room temperature, and filter to obtain powdery pyridyl dinitrile, which is washed with ethanol 3 times, vacuum-dried at 50°C for 12h.

Embodiment 3

[0035] Add 15 mg of pyridyl dinitrile monomer and 4.22 mg of cobalt acetate tetrahydrate to 12.22 g of n-pentanol, then add 0.102 g of DBU, ultrasonically disperse for 1 hour, transfer the mixture to a reaction kettle, and store at 160°C After reacting for 24 hours, naturally cool to room temperature after the reaction, wash the powder three times with water and ethanol respectively, and dry to obtain the pyridyl cobalt phthalocyanine-cobalt complex.

[0036] figure 1 Curve b is the ultraviolet-visible absorption spectrum of pyridyl cobalt phthalocyanine-cobalt complex, the characteristic absorption peak of pyridyl cobalt phthalocyanine: B band is at 329nm, Q band is at 598 and 658nm, and the absorption peak of Q band shows A phthalocyanine ring has been formed.

[0037] From the infrared spectrum of pyridyl cobalt phthalocyanine-cobalt complex ( figure 2 Spectral line a) can be seen, 750, 847 and 1100cm -1 The absorption peak at corresponds to the vibration absorption pea...

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Abstract

The invention belongs to the technical field of methyl alcohol fuel battery negative electrode catalyst application, and provides a pyridyl cobalt phthalocyanine-cobalt compound / graphene composite material and a preparation method thereof. The pyridyl cobalt phthalocyanine-cobalt compound / graphene composite material consists of a pyridyl cobalt phthalocyanine-cobalt compound and graphene. The preparation method comprises the steps of dispersing the graphene into n-amyl alcohol, adding pyridyl dinitrile and cobalt salt to obtain a mixture, performing ultrasonic dispersion, transferring the mixture into a reaction kettle, adding 1,8-diazabicyclo undecylenic-7-alkene, reacting at the temperature of 160 DEG C for 24 hours, and naturally cooling to obtain pyridyl cobalt phthalocyanine-cobalt / graphene powder; washing the pyridyl cobalt phthalocyanine-cobalt / graphene powder, and drying the washed pyridyl cobalt phthalocyanine-cobalt / graphene powder in vacuum to obtain the pyridyl cobalt phthalocyanine-cobalt compound / graphene composite material. The pyridyl cobalt phthalocyanine-cobalt compound / graphene composite material provided by the invention is excellent in comprehensive catalysis performance to oxygen, and the provided synthesis method is simple and feasible and is simple to operate.

Description

technical field [0001] The invention relates to the technical field of methanol fuel cell cathode catalyst application, in particular to a pyridyl cobalt phthalocyanine-cobalt composite / graphene composite material and a preparation method thereof. Background technique [0002] With the continuous growth of global energy demand, due to the environmental pollution and climate change caused by the excessive use of traditional fossil fuels, people have strongly realized that the development of a sustainable society in the future must be based on the development of sustainable energy and on the basis of utilization. As a highly efficient energy conversion device that converts chemical energy into electrical energy, fuel cells play an important role in sustainable energy utilization. Fuel cells are a new energy source with high efficiency, high reliability, environmental friendliness, cleanliness and renewable, which has attracted much attention. [0003] The fuel used in direct...

Claims

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Application Information

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IPC IPC(8): H01M4/90B01J31/22B82Y30/00
CPCY02E60/50B82Y30/00B82Y40/00H01M4/90H01M4/9008H01M8/1011
Inventor 崔丽莉何兴权吕国俊
Owner CHANGCHUN UNIV OF SCI & TECH
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