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La modified Ni/Al2O3 catalyst, preparation method and application

A catalyst and modification technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., to achieve the effect of reducing agglomeration, simple equipment and good stability

Inactive Publication Date: 2021-10-26
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Through a lot of research, we found that the introduction of rare earth element lanthanum can make the original nickel-based catalyst have better quality, but almost no one has applied it to the field of organic liquid hydrogen storage

Method used

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  • La modified Ni/Al2O3 catalyst, preparation method and application
  • La modified Ni/Al2O3 catalyst, preparation method and application
  • La modified Ni/Al2O3 catalyst, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A kind of La modified Ni / Al 2 o 3 The preparation method of catalyst, step is as follows:

[0060] (1) Weigh 7.433g Ni(NO 3 ) 2 ·6H 2 O, 1.329g La(NO 3 ) 3 ·6H 2 O, 22.075gAl(NO 3 ) 3 9H 2 O, dissolved in 100ml deionized water in a 250ml beaker to prepare solution I; weigh 18.834g Na 2 CO 3 Dissolve 100ml of deionized water in a 250ml beaker to prepare solution II; weigh 0.5g of polyethylene glycol 2000 and dissolve it in a 500ml beaker with 200ml of deionized water to prepare solution III.

[0061] (2) Under the condition of an oil bath at 90°C, solution I and solution II were added dropwise to solution III at a rate of 2-3 drops / second at the same time using a constant pressure dropping funnel, and stirred for 1 hour to form a light green precipitate. After natural cooling, filter, wash with deionized water until neutral, and then wash twice with absolute ethanol.

[0062] (3) Disperse the precipitate obtained in step (2) in 150 ml of absolute ethanol, an...

Embodiment 2

[0067] A kind of La modified Ni / Al 2 o 3 Application of catalyst in hydrogenation reaction of organic liquid hydrogen storage materials:

[0068] La-modified Ni / Al prepared with hydrogen storage material aziridine carbazole and Example 1 2 o 3 Catalyst mass ratio 10:1 ratio carries out hydrogenation reaction, and the steps are as follows:

[0069] Add 2 g of aziridine carbazole and 0.2 g of catalyst into 40 ml of n-hexane solvent to carry out the hydrogenation experiment of organic liquid hydrogen storage materials. The reaction pressure is 7 MPa, the reaction temperature is 150 ° C, and the rotation speed is 600 r / min. The hydrogenation reaction rate of carbazole is as follows Figure 10 shown.

Embodiment 3

[0071] A kind of La modified Ni / Al 2 o 3 Application of catalyst in hydrogenation reaction of organic liquid hydrogen storage materials:

[0072] La-modified Ni / Al prepared with hydrogen storage material aziridine carbazole and Example 1 2 o 3 Catalyst mass ratio 10:1 ratio carries out hydrogenation reaction, and the steps are as follows:

[0073] Add 2 g of aziridine carbazole and 0.2 g of catalyst into 40 ml of n-hexane solvent to carry out the hydrogenation experiment of organic liquid hydrogen storage materials. The reaction pressure is 5 MPa, the reaction temperature is 140 ° C, and the rotation speed is 600 r / min. The hydrogenation reaction rate of carbazole is as follows Figure 11 shown.

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Abstract

The invention provides a La modified Ni / Al2O3 catalyst, a preparation method and application, and belongs to the field of energy and chemical industry. According to the catalyst, Al2O3 is used as a carrier, metal nickel is used as an active component, a rare earth element La is directly introduced through a coprecipitation method for modification, a precursor is obtained, and then the precursor is subjected to high-temperature calcination reduction to obtain the target catalyst. By introducing the rare earth element La, on one hand, the agglomeration of nickel can be reduced, the dispersity of active metal Ni is increased, and the particle size of nickel particles is controlled at a nanometer level, and on the other hand, the stability and cyclicity of the catalyst can be improved, the hydrogenation catalytic activity of the catalyst on organic liquid can be effectively improved, and the catalytic activity can be comparable with that of a noble metal catalyst Ru and the like.

Description

technical field [0001] The invention belongs to the field of energy and chemical industry, in particular to a La-modified Ni / Al which can be used for organic liquid hydrogen storage 2 o 3 catalyst. Background technique [0002] The continuous consumption of fossil energy has made countries around the world generally face an energy crisis, and hydrogen energy has become one of the most promising renewable energy sources due to its unique advantages. Hydrogen energy technology includes the production, storage and transportation of hydrogen, as well as the release and efficient use of hydrogen, among which the storage of hydrogen is the most critical link. Nowadays, organic liquid hydrogen storage technology has become a hot topic in the research of hydrogen storage technology. Using organic liquid as a hydrogen storage carrier can realize the safe storage of hydrogen at normal temperature and pressure. [0003] The hydrogenation reaction of organic liquids often requires ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J35/10C01B3/00
CPCB01J23/83C01B3/0015B01J35/613B01J35/615B01J35/635B01J35/633B01J35/647Y02E60/32
Inventor 杨明高敏董媛
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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