Ammonia decomposition catalyst and preparation method and application thereof

A catalyst and ammonia decomposition technology, applied in the field of ammonia decomposition, can solve the problems of low low-temperature catalytic activity of the catalyst, poor ammonia decomposition effect, complicated preparation process, etc., and achieve small particle size, inhibition of sintering growth, and good particle dispersion. Effect

Pending Publication Date: 2021-08-24
福大紫金氢能科技股份有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0008] Therefore, the technical problem to be solved by the present invention is to overcome the cumbersome preparation process and long flow process of magnesium oxide-supported ruthenium-based catalysts in the prior art, and the prepared catalyst has low low-temperature catalytic activity and poor ammonia decomposition effect, thereby providing a A kind of ammonia decomposition catalyst and its preparation method and application

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  • Ammonia decomposition catalyst and preparation method and application thereof
  • Ammonia decomposition catalyst and preparation method and application thereof
  • Ammonia decomposition catalyst and preparation method and application thereof

Examples

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Embodiment 1

[0054] The present embodiment provides a kind of preparation method of ammonia decomposition catalyst, comprises the following steps:

[0055] 1) Put 0.1115g of ruthenium acetate, 4.8758g of magnesium acetate and 0.0351g of potassium acetate in a 250mL agate ball mill jar, and the mass ratio of the total weight of ruthenium acetate, magnesium acetate and potassium acetate to the agate pellets is 1:15 Put agate balls into it, and carry out ball milling in a planetary ball mill, the ball milling speed is 800r / min, and the ball milling time is 2h, to obtain metal salt mixture powder;

[0056] 2) The metal salt mixture powder obtained in step 1) is placed in a muffle furnace for calcination under an air atmosphere, the calcination temperature is 500° C., and the calcination time is 5 hours. After the calcination is completed, the mixture obtained after calcination is Powder is carried out tabletting, crushing, sieving, obtains granular mixture (the particle diameter of granular mi...

Embodiment 2

[0061] The present embodiment provides a kind of preparation method of ammonia decomposition catalyst, comprises the following steps:

[0062] 1) 0.1115g ruthenium acetate, 4.8758g magnesium acetate and 0.0702g potassium acetate are placed in a 250mL agate ball mill jar, and the mass ratio of ruthenium acetate, magnesium acetate, potassium acetate to the mass ratio of agate pellets is 1:15 Put agate balls into it, and carry out ball milling in a planetary ball mill, the ball milling speed is 800r / min, and the ball milling time is 2h, to obtain metal salt mixture powder;

[0063] 2) The metal salt mixture powder obtained in step 1) is placed in a muffle furnace for calcination under an air atmosphere, the calcination temperature is 500° C., and the calcination time is 5 hours. After the calcination is completed, the mixture obtained after calcination is Powder is carried out tabletting, crushing, sieving, obtains granular mixture (the particle diameter of granular mixture is 50...

Embodiment 3

[0068] The present embodiment provides a kind of preparation method of ammonia decomposition catalyst, comprises the following steps:

[0069] 1) 0.1859g ruthenium acetate, 4.8758g magnesium acetate and 0.0585g potassium acetate are placed in a 250mL agate ball mill jar, and the mass ratio of ruthenium acetate, magnesium acetate, potassium acetate to the mass ratio of agate pellets is 1:15 Put agate balls into it, and carry out ball milling in a planetary ball mill, the ball milling speed is 800r / min, and the ball milling time is 2h, to obtain metal salt mixture powder;

[0070] 2) The metal salt mixture powder obtained in step 1) is placed in a muffle furnace for calcination under an air atmosphere, the calcination temperature is 500° C., and the calcination time is 5 hours. After the calcination is completed, the mixture obtained after calcination is The powder is tabletted, crushed and sieved to obtain a granular mixture (the particle diameter of the granular mixture is 50 ...

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Abstract

The invention relates to the technical field of ammonia decomposition, in particular to an ammonia decomposition catalyst and a preparation method and application thereof. The preparation method of the ammonia decomposition catalyst comprises the following steps: carrying out ball milling on ruthenium acetate, magnesium acetate and potassium acetate to obtain metal salt mixture powder; and roasting the metal salt mixture powder, and then performing hydrogen reduction to obtain the ammonia decomposition catalyst. According to the preparation method of the ammonia decomposition catalyst, specific raw materials including ruthenium acetate, magnesium acetate and potassium acetate are added in a one-pot mode, metal salt mixture powder is obtained through ball milling treatment, then the ammonia decomposition catalyst is prepared through roasting and hydrogen reduction, the steps are matched with one another, the particle size of ruthenium metal can be greatly reduced, and the low-temperature activity of the catalyst is improved.

Description

technical field [0001] The invention relates to the technical field of ammonia decomposition, in particular to an ammonia decomposition catalyst and its preparation method and application. Background technique [0002] Hydrogen energy has the advantages of green, zero carbon, renewable, high energy density, high calorific value, high energy utilization efficiency and wide source of raw materials, and the combustion product is water, which will not cause environmental pollution. Prospect of clean energy, so hydrogen storage technology is very important. Technologies such as large-scale economy, efficient production, storage and safe transportation will directly affect the large-scale utilization of hydrogen energy technology. [0003] In recent years, ammonia has received increasing attention as a hydrogen storage medium. Ammonia has many advantages, such as high quality (17.7wt%H 2 ) and high H 2 Bulk density, high energy density, liquid state under mild conditions (20°C...

Claims

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Application Information

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IPC IPC(8): B01J37/18B01J35/10B01J37/08B01J37/02B01J35/02C01B3/04
CPCB01J37/18B01J37/0036B01J37/088B01J37/0201C01B3/047B01J35/23B01J35/40B01J35/50B01J35/613B01J35/633B01J35/647Y02E60/36
Inventor 李达林罗睿智陈崇启罗宇江莉龙
Owner 福大紫金氢能科技股份有限公司
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