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Ni3B load carbon composite catalyst for hydrogen production by ammonia borane hydrolysis

A composite catalyst, hydrolysis hydrogen production technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, hydrogen production, etc., can solve problems that have not been reported, and achieve easy implementation and improved utilization efficiency and stability, and the effect of large specific surface area

Inactive Publication Date: 2014-05-28
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But about Ni 3 B and carbon supported Ni 3 The research on B being used to catalyze the hydrolysis of ammonia borane has not been reported yet

Method used

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  • Ni3B load carbon composite catalyst for hydrogen production by ammonia borane hydrolysis
  • Ni3B load carbon composite catalyst for hydrogen production by ammonia borane hydrolysis
  • Ni3B load carbon composite catalyst for hydrogen production by ammonia borane hydrolysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of carbon-loaded Ni for hydrogen production by ammonia borane hydrolysis 3 The preparation method of B composite catalyst, concrete preparation steps are as follows:

[0019] 1) At room temperature, mix nickel chloride and tetraethylene glycol solution in a round bottom flask and ultrasonically dissolve to obtain a green and transparent mixed solution. The concentration of nickel chloride in the mixed solution is 0.03mol / L. Press Ni in the mixed solution 3 The load of B is 34.25wt%, add the corresponding VulcanXC-72, and ultrasonically stir to form a uniform mixed solution a;

[0020] 2) Mix and dissolve excess potassium borohydride and tetraethylene glycol solution in an ice-water bath to obtain mixed solution b, the concentration of potassium borohydride in mixed solution b is 0.62mol / L;

[0021] 3) Heat the mixed solution a to 45°C in argon, then add the mixed solution b into the mixed solution a, raise the temperature to 280°C under stirring and keep it for ...

Embodiment 2

[0025] A kind of carbon-loaded Ni for hydrogen production by ammonia borane hydrolysis 3 The preparation method of the B composite catalyst, the specific preparation steps are basically the same as in Example 1, the difference is that step 1) press Ni in the mixed solution 3 The loading of B is 50.35wt% and the corresponding VulcanXC-72 is added.

[0026] The carbon supports Ni 3 The XRD pattern of B composite catalyst is as follows figure 1 Shown; TEM picture as image 3 shown.

[0027] Through XRD analysis and elemental analysis, the prepared catalyst is Ni 3 B / C, Ni 3 The B loading was 50.35 wt%.

Embodiment 3

[0029] A kind of carbon-loaded Ni for hydrogen production by ammonia borane hydrolysis 3 The preparation method of the B composite catalyst, the specific preparation steps are basically the same as in Example 1, the difference is that step 1) press Ni in the mixed solution 3 The loading of B is 67.90wt% and the corresponding VulcanXC-72 is added.

[0030] The carbon supports Ni 3 The XRD pattern of B composite catalyst is as follows figure 1 Shown; TEM picture as Figure 4 shown.

[0031] Through XRD analysis and elemental analysis, the prepared catalyst is Ni 3 B / C, Ni 3 The B loading was 67.90 wt%.

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Abstract

A Ni3B load carbon composite catalyst for hydrogen production by ammonia borane hydrolysis is a composite catalyst prepared by loading a carbon source carrier with Ni3B active substance, the carbon source carrier is VulcanXC-72, the Ni3B active substance loaded on the carbon source carrier is a crystalline substance with the particle diameter being less than or equal to 10nm, the Ni3B load amount in the composite catalyst is 30-70wt%; a preparation method is as follows: using nickel chloride as a nickel salt, using potassium borohydride as a reduction agent, adding different proportions of a carbon source for synthesis in a tetraglycol solution. The advantages of the Ni3B load carbon composite catalyst are that: a carbon source material in the Ni3B load carbon composite catalyst has a high specific surface area, and can effectively disperse nanoparticles; the Ni3B active substance loaded on carbon has small particle size, large specific surface area and many catalytic active sites, and can significantly improve the activity of the catalyst; the Ni3B load carbon composite catalyst is synthesized in situ by a solution method, and has the advantages of being simple in process, low in cost, easy to implement, and convenient for large-scale popularization and application.

Description

technical field [0001] The invention relates to the field of hydrogen storage materials, in particular to a carbon-supported Ni for ammonia borane hydrolysis hydrogen production 3 B composite catalyst and its preparation method. Background technique [0002] With the development of human society, energy crisis and environmental pollution have become major problems facing the world today. People are trying to find a renewable new energy that is environmentally friendly and has a high combustion value. As a new type of clean energy, hydrogen energy has the advantages of wide sources and high calorific value, and is considered to be a new generation of green energy. However, the promotion and use of hydrogen energy still faces two major problems, namely, the safe and efficient production and storage of hydrogen energy, which has become a bottleneck restricting the development of hydrogen energy. In recent years, great progress has been made in the development of hydrogen st...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J35/10C01B3/06
CPCY02E60/36
Inventor 陈军鄯晓玲陶占良程方益梁静
Owner NANKAI UNIV
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