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Preparation method of catalyst containing imidazole and derivatives thereof

A derivative and catalyst technology, applied in the field of catalyst preparation, can solve the problems of poor catalyst performance and less research, and achieve the effects of uniform distribution, good conductivity and large specific surface area

Inactive Publication Date: 2014-03-05
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, research on low-cost catalysts mainly focuses on transition metal atom cluster catalysts, macrocyclic compound catalysts containing transition metals in the center, and metal carbide catalysts; in addition, nitrides, sulfides, borides, and silicides are used as low-temperature fuels. Battery catalysts have also been reported, but the performance of these catalysts is relatively poor, and there are relatively few studies

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  • Preparation method of catalyst containing imidazole and derivatives thereof

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preparation example Construction

[0027] The preparation method of the catalyst containing imidazole and its derivatives is used to prepare imidazole and its derivatives modified nitrogen-containing macroporous carbon-loaded transition metal catalyst, comprising the following steps:

[0028] Step A: Take hydrophilic nano-CaCO with a particle size of 15-40nm 3 , urea, and glucose were added to deionized water, and the hydrophilic nano-CaCO 3 , The mass ratio of urea, glucose and deionized water is 8:8:8:100, and then ultrasonically vibrate and mix for 30 minutes to dissolve urea and glucose and mix with nano-CaCO 3 Uniformly dispersed, cured at 106°C for 6 hours to form a cured product, the cured product was heated to 500°C under the protection of a nitrogen atmosphere, carbonized at a constant temperature for 2 hours, and then carbonized at a constant temperature of 900°C for 2 hours to form a carbonized product, and the cured product was formed at 80°C The carbonized product was washed successively with 5wt%...

Embodiment 1

[0032] Example 1: Preparation of macroporous carbon

[0033] Hydrophilic nano-CaCO with a particle size of 15-40nm 3 Add 8g each of urea and glucose to 100mL deionized water, and mix with ultrasonic vibration for 30 minutes to dissolve urea and glucose and mix with nano-CaCO 3 Disperse evenly; then cure at 106°C for 6 hours; heat the cured product to 500°C under the protection of a nitrogen atmosphere, and carbonize at a constant temperature for 2 hours; then carbonize at a constant temperature for 2 hours at 900°C; concentration of hydrochloric acid, 30wt% concentration of sodium hydroxide solution, deionized water washing, constant temperature drying at 120 ° C for 4 hours, to obtain nitrogen-containing macroporous carbon materials.

Embodiment 2

[0034] Example 2: Preparation of imidazole-modified macroporous carbon-supported noble metal catalyst

[0035] Hydrophilic nano-CaCO with a particle size of 15-40nm 3 Add 8g each of urea and glucose to 100mL deionized water, and mix with ultrasonic vibration for 30 minutes to dissolve urea and glucose and mix with nano-CaCO 3 Disperse evenly; then cure at 106°C for 6 hours; heat the cured product to 500°C under the protection of a nitrogen atmosphere, and carbonize at a constant temperature for 2 hours; then carbonize at a constant temperature for 2 hours at 900°C; Hydrochloric acid, 30wt% sodium hydroxide solution, deionized water washing, constant temperature drying at 120 ° C for 4 hours, to obtain nitrogen-containing macroporous carbon materials.

[0036] Crush the nitrogen-containing macroporous carbon material to a particle size of 100-400 mesh, take 2g of nitrogen-containing macroporous carbon and place it in a hydrothermal reaction kettle with a volume of 150mL, add 0...

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Abstract

The invention relates to preparation of a non-noble metal catalyst of a fuel battery, and aims to provide a preparation method of a catalyst containing imidazole and derivatives thereof. The preparation method of the catalyst containing imidazole and the derivatives thereof comprises the following steps: preparing a nitrogen-containing macroporous carbon material; and finally preparing an imidazole and derivatives modified nitrogen-containing macroporous carbon loaded transitional metal catalyst. By adopting a hydrothermal method to synthesize the catalyst provided by the invention, not only can catalyst particles which are consistent in dimension and uniform in distribution be obtained, but also the time for synthesizing the catalyst can be greatly shortened. Through grading calcining at different temperatures, through holes of macroporous carbon are smoother, the pore diameter distribution is more balanced, and the specific surface area is greater. The catalyst is good in conductivity, and the imidazole and derivatives modified layer increases the activity and stability of the catalyst, so that the catalyst is particularly suitable for a large current working condition. The synthesized non-noble metal catalyst can be used as a cathode catalyst for the fuel battery or an air battery, is low in cost, and facilitates popularization of fuel battery and air battery technologies.

Description

technical field [0001] The invention relates to the preparation of non-noble metal catalysts in fuel cells, in particular to the preparation method of catalysts containing imidazole and derivatives thereof. Background technique [0002] In recent years, due to innovative breakthroughs in fuel cell (Fuel Cell) technology, coupled with multiple pressures such as environmental protection issues and energy shortages, governments of various countries and industries such as automobiles, electric power, and energy have gradually attached importance to the development of fuel cell technology. Fuel cell is a new power generation technology with high efficiency, low pollution, and diversified energy sources. The power generation system of fuel cell is not only lower in cost than traditional fossil fuels, but also has the advantages of cleanliness and high efficiency. It can also combine nuclear energy, biomass energy, and solar energy. , wind power and other power generation technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22H01M4/90H01M4/92
CPCY02E60/50
Inventor 李洲鹏豆利婷刘宾虹
Owner ZHEJIANG UNIV
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