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Nickel-copper tungstate nano heterojunction particle, preparation method thereof and application of nickel-copper tungstate nano heterojunction particle in catalytic hydrogen production

A copper nano-heterojunction technology, applied in the direction of nickel compounds, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of catalyst particle agglomeration, reduce cycle life, etc., achieve regular shape and improve metal dispersion , the effect of good stability

Pending Publication Date: 2022-03-22
HUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the nanometer size, the specific surface area and reactivity of non-noble metals are greatly increased, but the higher specific surface energy will cause the catalyst particles to be more prone to agglomeration and reduce their cycle life

Method used

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  • Nickel-copper tungstate nano heterojunction particle, preparation method thereof and application of nickel-copper tungstate nano heterojunction particle in catalytic hydrogen production
  • Nickel-copper tungstate nano heterojunction particle, preparation method thereof and application of nickel-copper tungstate nano heterojunction particle in catalytic hydrogen production
  • Nickel-copper tungstate nano heterojunction particle, preparation method thereof and application of nickel-copper tungstate nano heterojunction particle in catalytic hydrogen production

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Experimental program
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Effect test

Embodiment 1

[0032] A preparation method of nickel-copper tungstate nano-heterojunction particles, comprising the following steps:

[0033] S1. Dissolve 1.6mmol of nickel nitrate and 0.4mmol of copper nitrate in 40mL of ultrapure water and stir for 5min to prepare mixed salt solution A;

[0034] S2. Dissolve 2mmol sodium tungstate in 40mL ultrapure water to form solution B;

[0035] S3. Add 4mmol sodium salicylate into the solution A, stir and dissolve, slowly add the solution B dropwise through a separatory funnel, and stir for 5min to obtain a solution C;

[0036] S4. Move the solution C to a 100mL reaction kettle, react at 170°C for 5h, filter and wash the solid at the bottom of the reaction kettle, then move it to a muffle furnace, and react at 500°C for 2h to obtain Ni 0.8 Cu 0.2 WO 4 Nickel-copper tungstate nano-heterojunction, its morphology is as follows figure 1 shown.

[0037] The prepared nickel-copper tungstate nano-heterojunction particles Ni 0.8 Cu 0.2 WO 4 Used as a ...

Embodiment 2

[0039] A preparation method of nickel-copper tungstate nano-heterojunction particles, comprising the following steps:

[0040] S1. Dissolve 1.2mmol of nickel nitrate and 0.8mmol of copper nitrate in 40mL of ultrapure water and stir for 10min to prepare mixed salt solution A;

[0041] S2. Dissolve 2mmol sodium tungstate in 40mL ultrapure water to form solution B;

[0042] S3. Add 4mmol sodium salicylate into the solution A, stir and dissolve, slowly add the solution B dropwise through a separatory funnel, and stir for 5min to obtain a solution C;

[0043] S4. Move the solution C to a 100mL reaction kettle, react at 170°C for 5h, filter and wash the solid at the bottom of the reaction kettle, then move it to a muffle furnace, and react at 500°C for 2h to obtain Ni 0.6 Cu 0.4 WO 4 Nickel-copper tungstate nano-heterojunction, its morphology is as follows figure 2 shown.

[0044] The prepared nickel-copper tungstate nano-heterojunction particles Ni0.6 Cu 0.4 WO 4 Used as a ...

Embodiment 3

[0046] A preparation method of nickel-copper tungstate nano-heterojunction particles, comprising the following steps:

[0047] S1. Dissolve 0.8mmol of nickel nitrate and 1.2mmol of copper nitrate in 40mL of ultrapure water and stir for 10min to prepare mixed salt solution A;

[0048] S2. Dissolve 2mmol sodium tungstate in 40mL ultrapure water to form solution B;

[0049] S3. Add 4mmol sodium salicylate into the solution A, stir and dissolve, slowly add the solution B dropwise through a separatory funnel, and stir for 5min to obtain a solution C;

[0050] S4. Move the solution C to a 100mL reaction kettle, react at 170°C for 5h, filter and wash the solid at the bottom of the reaction kettle, then move it to a muffle furnace, and react at 500°C for 2h to obtain Ni 0.4 Cu 0.6 WO 4 Nickel-copper tungstate nano-heterojunction, its morphology is as follows image 3 shown.

[0051] The prepared nickel-copper tungstate nano-heterojunction particles Ni 0.4 Cu 0.6 WO 4 Used as a...

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Abstract

The invention belongs to the fields of catalysis and hydrogen storage materials. According to the nickel-copper tungstate nanometer heterojunction particle, the molecular formula of the nickel-copper tungstate nanometer heterojunction particle is Ni < x > Cu < 1-x > WO < 4 >, and x is larger than 0 and smaller than 1. The catalyst is controllable in particle morphology, adjustable in metal loading capacity, high in mechanical strength and good in catalytic performance, and has a good application prospect in the field of ammonia borane alcoholysis hydrogen production.

Description

technical field [0001] The invention belongs to the field of catalysis and hydrogen storage materials, and in particular relates to nickel-copper tungstate nano-heterojunction particles, a preparation method thereof and the application of catalytic hydrogen production. Background technique [0002] Ammoniaborane (NH 3 BH 3 , AB) have high hydrogen content, fast hydrogen release rate, good stability and environmental friendliness, and are considered to be one of the most potential hydrogen storage materials. The ways of ammonia borane decomposition to produce hydrogen include pyrolysis, hydrolysis and alcoholysis. Ammonia borane alcoholysis product NH 4 B(OCH 3 ) 4 Compatible with LiAlH at room temperature 4 and NH 4 Cl reacts to produce ammonia borane, the hydrogen production product is easy to recover, and the production and application cost is low. [0003] The alcoholysis of ammonia borane to produce hydrogen has a slow reaction rate and a low rate of hydrogen pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/888B01J35/02C01B3/06C01G53/00
CPCB01J23/002B01J23/888C01G53/006C01B3/065C01B2203/1217C01B2203/1041C01P2004/04B01J35/40B01J35/50Y02E60/36
Inventor 李浩廖锦云冯裕发张婉玲刘全兵王慧泽陈晓东张雪峰
Owner HUIZHOU UNIV
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