Rod-shaped nano nickel-containing metal solid solution catalyst and preparation method thereof

A metal catalyst and solid solution technology, which is applied in the field of rod-shaped nano-nickel-containing metal solid solution catalyst and its preparation, can solve the problems of rare morphology and structure, no reports, etc., and achieve good stability, uniform shape and size, and long life.

Active Publication Date: 2020-08-11
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For nickel-magnesium catalysts, the morphology and structure reported in the past are very rare, and there are no reports about its rod-like structure at home and abroad.

Method used

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  • Rod-shaped nano nickel-containing metal solid solution catalyst and preparation method thereof
  • Rod-shaped nano nickel-containing metal solid solution catalyst and preparation method thereof
  • Rod-shaped nano nickel-containing metal solid solution catalyst and preparation method thereof

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Embodiment 1

[0030] Such as figure 1 and figure 2 As shown, the present embodiment provides a method for preparing a rod-shaped nano nickel-containing metal solid solution catalyst, comprising the following steps:

[0031] Such as figure 1 As shown, first carry out step 1) S11, add nickel salt, first metal salt and deionized water into the reaction vessel at the same time, mix uniformly to obtain the first solution, and the first metal salt includes magnesium salt, copper salt and iron salt One of.

[0032] As an example, in step 1), the molar ratio of the nickel salt to the first metal salt ranges from 0.2 to 0.6:1, the nickel salt and the first metal salt are nitrate or acetate, and the mixing temperature is Room temperature ~ 70°C, holding time 5 ~ 20min.

[0033] Such as figure 1 As shown, then step 2) S12 is carried out, the first solution is stirred, and after the temperature is stabilized for a period of time, a surfactant is added to obtain the second solution after reaction....

Embodiment 2

[0049] This embodiment provides a method for preparing a rod-shaped nano-nickel-containing metal solid solution catalyst, comprising the following steps:

[0050] Weigh 4mmol of nickel nitrate and 12mmol of magnesium nitrate into a beaker, add 18ml of deionized water, and dissolve at 50°C for 15 minutes to obtain the first solution. The first solution was quickly transferred to a magnetic stirrer, and after the temperature was stabilized for 5 minutes, 1.1 g of polyethylene glycol was added to react for 30 minutes to obtain the second solution. Add 30ml of ethylene glycol to the second solution, and react for 2 hours to obtain the third solution. Move the third solution into a hydrothermal kettle and react at 170°C for 18 hours. After cooling to room temperature, centrifuge the resulting solution and wash it with ethanol and deionized water for 4 times to obtain a light green precursor. Grind the precursor evenly , baked at 650°C for 2h. Finally, the calcined body is ground ...

Embodiment 3

[0052] This embodiment provides a method for preparing a rod-shaped nano-nickel-containing metal solid solution catalyst, comprising the following steps:

[0053] Weigh 4 mmol of nickel acetate and 12 mmol of magnesium acetate into a beaker, add 18 ml of deionized water, and dissolve at a temperature of 50° C. for 15 minutes to obtain the first solution. The first solution was quickly transferred to a magnetic stirrer, and after the temperature was stabilized for 5 minutes, 0.9 g of polyethylene glycol was added to react for 30 minutes to obtain the second solution. Add 30ml of ethylene glycol to the second solution, and react for 2 hours to obtain the third solution. Move the third solution into a hydrothermal kettle and react at 170°C for 18 hours. After cooling to room temperature, centrifuge the resulting solution and wash it with ethanol and deionized water for 4 times to obtain a light green precursor. Grind the precursor evenly , baked at 650°C for 3h. Finally, the ca...

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Abstract

The invention provides a rod-like nanometer nickel containing metal solid solution catalyst and a preparation method thereof. The ingredient of the rod-like nanometer nickel containing metal solid solution catalyst is a nickel-magnesium solid solution formed by nickel and magnesium which are adulterated with each other, the size is 300-600nm, and the section width is 40-70nm. The preparation method of the rod-like nanometer nickel containing metal solid solution catalyst comprises the following steps: mixing nickel-magnesium metal salt with deionized water uniformly when the temperature ranges from room temperature to 70 DEG C, maintaining constant temperature for 5-10min, adding a surface active agent after stabilizing for a period of time, reacting for 20-30min, then adding an organic solvent, after drying, rinsing by using the organic solvent, and carrying out vacuum drying to obtain a rod-like nanometer nickel-magnesium solid solution catalyst precusor. The obtained precursor is roasted for 2-8h at 550-750 DEG C to obtain the rod-like nanometer nickel-magnesium solid solution catalyst which is uniform and stable in shape and good in dispersity. According to the catalyst provided by the invention, the dispersity is good, and the ingredient is controllable; the method is simple, the operation is easy, the shape of the catalyst is uniform, the stability performance is good, and the catalyst has excellent catalytic activity for reforming reaction of methane and carbon dioxide.

Description

technical field [0001] The invention relates to the technical field of preparation of nanomaterials, in particular to a rod-shaped nano nickel-containing metal solid solution catalyst and a preparation method thereof. Background technique [0002] With the continuous decline of the world's oil reserves, human beings have to start to consider the development of alternative new energy sources, and the abundant natural gas and shale gas in the earth's crust and oceans have become the most competitive new energy sources in the 21st century. The main component of natural gas is methane, and its greenhouse effect is 20 times that of carbon dioxide, which seriously causes the global greenhouse effect. Methane carbon dioxide reforming utilizes two gases, carbon dioxide and methane, which cause the greenhouse effect, and is of great significance to alleviating global warming and realizing a low-carbon life. The theoretical H produced during this reaction to produce syngas 2 The / CO...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755B01J35/02B01J37/10C10J1/20
CPCB01J23/755B01J35/02B01J35/023B01J37/10C10J1/20Y02P20/52
Inventor 祝艳肖青林孙予罕
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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