Preparation method of flaky cuprous oxide/cobaltous oxide nano composite material and application of flaky cuprous oxide/cobaltous oxide nano composite material in catalyzing hydrolysis of ammonia borane to produce hydrogen

A technology of cobaltous oxide nanometer and flaky cuprous oxide, which is applied in the direction of metal/metal oxide/metal hydroxide catalyst, catalyst activation/preparation, chemical instruments and methods, etc., and can solve the problem of high reaction temperature and hydrothermal reaction Long time, potential safety hazards and other problems, to achieve the effect of simple operation, easy industrial production, and low cost

Active Publication Date: 2020-07-17
HUIZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Chinese patent (CN108837832A) has proposed a kind of nano Cu 2 The preparation method of O, the Cu 2+ Dispersed into the emulsion, using the method of radiation irradiation, the preparation of nano-Cu 2 O, but due to the use of a large amount of organic solvents in the reaction process and the use of radiation exposure, there are certain safety hazards in operation;
[0005] Chinese patent (CN106362766A) proposes a preparation method of CoO nano-flakes. At room temperature, cobalt acetylacetonate, ethylene glycol, and deionized water are mixed, stirred and subjected to hydrothermal reaction, then cooled to room temperature, cleaned, and then vacuum-dried CoO flakes with a two-dimensional crystal structure were obtained overnight, but the hydrothermal reaction time of this method is longer and the reaction temperature is higher

Method used

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  • Preparation method of flaky cuprous oxide/cobaltous oxide nano composite material and application of flaky cuprous oxide/cobaltous oxide nano composite material in catalyzing hydrolysis of ammonia borane to produce hydrogen
  • Preparation method of flaky cuprous oxide/cobaltous oxide nano composite material and application of flaky cuprous oxide/cobaltous oxide nano composite material in catalyzing hydrolysis of ammonia borane to produce hydrogen
  • Preparation method of flaky cuprous oxide/cobaltous oxide nano composite material and application of flaky cuprous oxide/cobaltous oxide nano composite material in catalyzing hydrolysis of ammonia borane to produce hydrogen

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Weigh 0.249gCuSO 4 ·5H 2 O and 0.843gCoSO 4 ·7H 2 O was dissolved in 20mL of ultrapure water, magnetically stirred to dissolve to obtain solution A, and 2.258g of potassium sodium tartrate and 0.545g of sodium dodecylsulfonate were dissolved in 20mL of ultrapure water, magnetically stirred to dissolve to obtain solution B. The B solution was slowly added dropwise to A to obtain the C solution, and the stirring was continued for 30 min. Weigh 4g of NaOH and dissolve it in 40mL of ultrapure water to obtain D solution, slowly drop D solution into C solution, continue to stir for 30min, then transfer to the reaction kettle, tighten and react under hydrothermal reaction at 160°C for 4h. After the reaction, cool to room temperature, filter and wash, collect the product, wash 2-3 times with water, wash 2-3 times with ethanol, dry in a vacuum oven at 60°C, and calcine at 250°C for 4 hours to obtain the target product sheet Cu-like 2 O-CoO nanocomposite catalysts.

Embodiment 2

[0038] Weigh 0.249gCuSO 4 ·5H 2 O and 0.843gCoSO 4 ·7H 2O was dissolved in 20mL of ultrapure water, magnetically stirred to dissolve to obtain solution A, and 1.553g of sodium tartrate and 0.545g of sodium dodecylsulfonate were dissolved in 20mL of ultrapure water, magnetically stirred to dissolve to obtain solution of B. The B solution was slowly added dropwise to A to obtain the C solution, and the stirring was continued for 30 min. Weigh 4g of NaOH and dissolve it in 40mL of ultrapure water to obtain D solution, slowly drop D solution into C solution, continue to stir for 30min, then transfer to the reaction kettle, tighten and react under hydrothermal reaction at 160°C for 4h. After the reaction, cool to room temperature, filter and wash, collect the product, wash 2-3 times with water, wash 2-3 times with ethanol, dry in a vacuum oven at 60°C, and calcinate at 250°C for 4 hours to obtain the target product sheet Cu-like 2 O-CoO nanocomposite catalysts.

Embodiment 3

[0040] Weigh 0.249gCuSO 4 ·5H 2 O and 0.843gCoSO 4 ·7H 2 O was dissolved in 20mL of ultrapure water, stirred and dissolved by magnetic force to obtain a solution of solution A, and 1.2g of tartaric acid and 0.545g of sodium dodecylsulfonate were dissolved in 20mL of ultrapure water, stirred and dissolved by magnetic force to obtain a solution of solution B. The B solution was slowly added dropwise to A to obtain the C solution, and the stirring was continued for 30 min. Weigh 4g of NaOH and dissolve it in 40mL of ultrapure water to obtain D solution, slowly drop D solution into C solution, continue to stir for 30min, then transfer to the reaction kettle, tighten and react under hydrothermal reaction at 160°C for 4h. After the reaction, cool to room temperature, filter and wash, collect the product, wash 2-3 times with water, wash 2-3 times with ethanol, dry in a vacuum oven at 60°C, and calcinate at 250°C for 4 hours to obtain the target product sheet Cu-like 2 O-CoO nano...

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Abstract

The invention discloses a preparation method of a flaky cuprous oxide / cobaltous oxide nano composite material, which comprises the following steps: (1) dissolving soluble cobalt salt and copper salt in ultrapure water to prepare a mixed salt solution A; (2) dissolving a surfactant in ultrapure water, and adding tartrate to prepare a solution B; (3) slowly adding the solution B into the solution A,mixing to form a solution C, and stirring; (4) slowly dropwise adding an alkali solution into the solution C, and continuously stirring; (5) transferring to a reaction kettle, reacting at 120-180 DEGC for 2-24 hours, filtering, washing, collecting the product, and drying in a vacuum oven at 40-80 DEG C; and (6) calcining the dried powder at a low temperature of 200-300 DEG C for 0.1-5 hours. According to the invention, Tartrate is ingeniously selected as a complexing agent and a reducing agent, a simple hydrothermal synthesis method and low-temperature calcination treatment are adopted, andthe flaky cuprous oxide / cobaltous oxide nano composite material is successfully prepared.

Description

technical field [0001] The invention belongs to the field of catalysis and hydrogen storage materials, and in particular relates to a method for preparing a sheet-shaped cuprous oxide / cobaltous oxide nanocomposite material and its application in catalyzing the hydrolysis of ammonia borane to produce hydrogen. Background technique [0002] The increasing demand for energy and the excessive exploitation and use of traditional energy sources such as coal and oil have caused a series of environmental problems and energy crises. Finding a renewable clean energy to replace traditional energy has become a hot spot in current scientific research. Against this background, countries have successively developed and utilized a series of new energy sources such as solar energy, hydrogen energy, wind energy, water energy, biomass energy, geothermal energy, tidal energy and nuclear energy. Hydrogen energy has attracted extensive attention due to its high combustion calorific value and non...

Claims

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Application Information

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IPC IPC(8): B01J23/75B01J35/02B01J37/08B01J37/10C01B3/06B82Y30/00
CPCB01J37/0018B01J23/75C01B3/065B82Y30/00B01J35/00B01J35/30Y02E60/36Y02P20/133
Inventor 冯裕发李浩王慧泽陈晓东张喜斌刘全兵
Owner HUIZHOU UNIV
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