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Method for synchronously synthesizing transition metal nitride/graphitized carbon through ion exchange resin

An ion exchange resin, transition metal technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as increased cost, complicated process, restricted development and application, etc., and achieves convenient operation. , broad application value, and the effect of commercialization

Inactive Publication Date: 2013-05-22
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as far as its preparation method is concerned, the traditional method usually adopts step-by-step preparation, which undoubtedly increases the cost and complicates the process, which limits its development and application.

Method used

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  • Method for synchronously synthesizing transition metal nitride/graphitized carbon through ion exchange resin
  • Method for synchronously synthesizing transition metal nitride/graphitized carbon through ion exchange resin
  • Method for synchronously synthesizing transition metal nitride/graphitized carbon through ion exchange resin

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specific Embodiment approach 1

[0014] Specific embodiment one: the present embodiment utilizes the method for synchronous synthesis transition metal nitride / graphitized carbon of ion exchange resin, is to carry out according to the following steps: one, adopt acid treatment method or alkali treatment method to carry out pretreatment to carbon source 2~ 8h, obtain the pretreated carbon source; 2. Dissolve the graphitization catalyst with a concentration of 0.01 to 0.3mol / L and the transition metal salts with a concentration of 0.01 to 0.3mol / L in a solvent, and then add the pretreated Carbon source, stir 2~24h, obtain mixture; Wherein the mass ratio of the carbon source of pretreatment and graphitization catalyst is (1~10): 1, the mass ratio of the carbon source of pretreatment and transition metal salts is ( 1~10): 1; 3. Under air or oxygen atmosphere, pre-carbonize the mixture of step 2 for 2-5 hours at 350° C. to obtain a pre-carbonized mixture; 4. At a heating rate of 5-20° C. / min, Raise the temperature ...

specific Embodiment approach 2

[0016] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the specific operation steps of the acid treatment method in step one are: the carbon source is added to the nitric acid solution with a mass fraction of 10% to 20%, at 80% to 20% Reflux at 150°C for 4-8 hours to complete the acid treatment, wherein the mass-volume ratio of carbon source to nitric acid solution is 10g:50mL. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0017] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the specific operation steps of the alkali treatment method in step one are as follows: the carbon source is added into a potassium hydroxide solution with a mass fraction of 10% to 20% and ultrasonically Stir for 4 to 7 hours, wash with distilled water until the pH is 7, and then dry at 80°C to 100°C for 6 to 8 hours to complete the alkali treatment, wherein the mass volume ratio of carbon source to KOH solution is 10g:50mL. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention provides a method for synchronously synthesizing transition metal nitride / graphitized carbon through an ion exchange resin, relates to a transition metal nitride / graphitized carbon synthesis method and solves the problems of high cost, severe conditions and complicated process in the existing transition metal nitride / graphitized carbon nano compound preparation technology. The synthesis method comprises the following steps: 1, pretreating a carbon source; 2, combining a mixed solution of a graphitizing catalyst and transition metal salt and the pretreated carbon source under electrostatic action; 3, performing precarbonization treatment; 4, performing heat treatment in an inert atmosphere; and 5, performing acid treatment, then washing with distilled water, and drying to obtain the transition metal nitride / graphitized carbon nano compound. The product prepared by the invention has excellent electrocatalytic property when being used as a carrier, and is simple in process, low in energy consumption, low in cost, green, safe, suitable for large-scale production and easy to realize commercialization. The invention is applicable to the field of energy storage and conversion.

Description

technical field [0001] The invention relates to a method for synthesizing transition metal nitride / graphitized carbon. Background technique [0002] Transition metal nitrides are generally interstitial compounds, which have high melting point, high hardness, high temperature chemical stability, good thermal conductivity, electrical conductivity, wear resistance and corrosion resistance, etc., and have been widely used in high temperature resistance, resistance wear area. Transition metal nitrides known as "quasi-platinum catalysts" have attracted extensive attention from scholars all over the world because of their excellent catalytic activity. The preparation methods of transition metal nitrides include simple substance direct nitriding method (1000-1300 ℃, reaction for 20-25 hours or more), oxide carbothermal reduction (nitridation) method (above 1200 ℃), chemical vapor phase reaction method (CVD method ), self-propagating high temperature (SHS) method, etc. The chemica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24H01M4/92
CPCY02E60/50
Inventor 付宏刚尹婕王蕾穆光赵璐赵冬冬田国徽
Owner HEILONGJIANG UNIV
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