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Mo2C catalytic material and preparation method and application thereof

A technology for catalytic materials and composite materials, applied in the field of Mo2C catalytic materials and their preparation, can solve the problems of less surface active sites and less than ideal catalytic activity, and achieve the effects of environmental friendliness, excellent catalytic activity, and wide source of raw materials

Active Publication Date: 2020-01-24
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a Mo 2 C catalytic material and its preparation method and application solve the existing Mo 2 The Mo obtained by C catalytic material preparation method 2 There are few active sites on the surface of C, which leads to the problem that its catalytic activity in the HER reaction is not ideal.

Method used

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  • Mo2C catalytic material and preparation method and application thereof
  • Mo2C catalytic material and preparation method and application thereof
  • Mo2C catalytic material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This example is Mo 2 Preparation of C catalytic materials

[0041] (1) Weigh respectively 0.0652g of molybdenum acetylacetonate and 0.0582g of cobalt nitrate hexahydrate (Co:(Co+Mo)=50% (molar ratio)) into a 50mL polytetrafluoro liner, and simultaneously add 30mL isopropanol and 6 mL glycerin. At room temperature (25° C.) with a rotational speed of 500 rad / min, magnetic stirring was performed for 3 h until the solid was completely dissolved. Finally, seal the polytetrafluoroethylene liner into the reaction kettle body, put it into a 180°C drying oven and heat it for 12 hours. After the kettle was naturally cooled to room temperature, the brown suspension was transferred to a 50 mL centrifuge tube, and centrifuged at 8000 rad / min for 5 min. After the centrifugation is completed, pour off the supernatant and wash with 40mL absolute ethanol for 3 times. The obtained sample was placed in a vacuum drying oven and dried in vacuum at 60° C. for 12 hours to obtain a precurs...

Embodiment 2

[0048] This example is Mo 2 Preparation of C catalytic materials

[0049] (1) Weigh respectively 0.0652g of molybdenum acetylacetonate and 0.00647g of cobalt nitrate hexahydrate (Co:(Co+Mo)=10% (molar ratio)) into a 50mL polytetrafluoro liner, and simultaneously add 30mL isopropanol and 6 mL glycerin. At room temperature (25° C.) with a rotational speed of 500 rad / min, magnetic stirring was performed for 3 h until the solid was completely dissolved. Finally, seal the polytetrafluoroethylene liner into the reaction kettle body, put it in a 220°C drying oven and heat it for 10 hours. After the kettle was naturally cooled to room temperature, the brown suspension was transferred to a 50 mL centrifuge tube, and centrifuged at 8000 rad / min for 5 min. After the centrifugation is completed, pour off the supernatant and wash with 40mL absolute ethanol for 3 times. The obtained sample was placed in a vacuum oven and dried in vacuum at 60° C. for 12 h.

[0050] (2) The above-mentio...

Embodiment 3

[0054] This example is Mo 2 Preparation of C catalytic materials

[0055] (1) Weigh 0.0652g of molybdenum acetylacetonate and 0.232g of cobalt nitrate hexahydrate (Co:(Co+Mo)=80% (molar ratio)) into 50mL polytetrafluoro liner, and add 30mL isopropanol and 6 mL glycerol. At room temperature (25° C.) with a rotational speed of 500 rad / min, magnetic stirring was performed for 3 h until the solid was completely dissolved. Finally, seal the polytetrafluoroethylene liner into the reaction kettle body, put it into a 180°C drying oven and heat it for 12 hours. After the kettle was naturally cooled to room temperature, the brown suspension was transferred to a 50 mL centrifuge tube, and centrifuged at 8000 rad / min for 5 min. After the centrifugation is completed, pour off the supernatant and wash with 40mL absolute ethanol for 3 times. The obtained sample was placed in a vacuum oven and dried in vacuum at 60° C. for 2 h.

[0056] (2) The above-mentioned sample was charged into a q...

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Abstract

The invention relates to the technical field of catalytic materials, in particular to a Mo2C catalytic material and a preparation method and application thereof. The invention discloses the preparation method of the Mo2C catalytic material. According to the preparation method, a large number of defect sites are manufactured on the surface of Mo2C due to intercalation and deintercalation of metal cobalt ions, and the generation of the defect sites greatly increases the active sites of the catalytic material. The Mo2C catalytic material prepared in the invention shows excellent catalytic activity and good stability when applied to hydrogen evolution reactions. In addition, the preparation method is simple to operate, high in production efficiency, friendly to environment, wide in raw material sources and low in raw material cost, so the preparation cost of the catalytic material is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of catalytic materials, in particular to a Mo 2 C Catalytic materials and their preparation methods and applications. Background technique [0002] With the consumption of non-renewable energy around the world, traditional fossil fuels, as the main energy used by human beings today, have seriously insufficient reserves. At the same time, ecological problems such as environmental pollution and greenhouse effect caused by the use of fossil fuels have attracted more and more attention. Therefore, it is particularly important for the sustainable development of society to find a green, efficient and sustainable new energy source. First of all, among all fossil fuels and biofuels, hydrogen has the highest specific energy density (142.35kJ / kg); the energy produced per kilogram of hydrogen combustion is about 3 times that of gasoline, 3.9 times that of alcohol, and 4.5 times that of coke ; secondly, hydrogen is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/22B01J35/10C25B1/04C25B11/06
CPCB01J27/22C25B1/04C25B11/075B01J35/33B01J35/60Y02E60/36
Inventor 马宇飞陈萌王铁军秦延林仇松柏刘雨佳
Owner GUANGDONG UNIV OF TECH
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