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Twisted nano strip-shaped Co-Fe-B catalyst as well as preparation method and application thereof

A co-fe-b, catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of limited reserves, general catalytic performance and high cost and other problems, to achieve the effect of reducing preparation cost, low investment cost and easy operation

Pending Publication Date: 2020-08-07
SHENYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention discloses a twisted nanobelt-shaped Co-Fe-B catalyst, a preparation method and its application to solve the problem that the existing noble metal-based catalysts cannot meet the existing applications due to high cost and limited reserves. The problem of demand, rather than noble metal-based catalytic materials, although they exhibit certain catalytic activity, there is a general problem of catalytic performance

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  • Twisted nano strip-shaped Co-Fe-B catalyst as well as preparation method and application thereof
  • Twisted nano strip-shaped Co-Fe-B catalyst as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Weigh 1.4010g ferrous sulfate heptahydrate and 1.4055g cobalt sulfate heptahydrate and ultrasonically dissolve them in 70mL deionized water to form solution A; weigh 4.5042g glycine and dissolve them in 20mL deionized water to form solution B; Mix and magnetically stir for 1 hour to form solution C; dissolve 3.8g of sodium hydroxide in 10mL of deionized water to form solution D; titrate solution D into solution C to obtain solution E; add 2.7463g of sodium borohydride to solution E, A brown solution F is formed; add nickel foam into the brown solution F, and react for 5 minutes. After the reaction, take the foam nickel out of solution F, wash and dry the obtained black solution with an ethanol solution consisting of 20 mL of absolute ethanol and 10 mL of water, and then dry it. The substance is the target product CoFeB catalyst.

[0050] see figure 1 As shown, it can be seen from the SEM picture that the surface of the CoFeB catalyst has a twisted ribbon structure, and...

Embodiment 2

[0052] Weigh 1.4010g ferrous sulfate heptahydrate and 0.5560g cobalt sulfate heptahydrate and ultrasonically dissolve them in 70mL deionized water to form solution A; weigh 4.5042g glycine and dissolve them in 20mL deionized water to form solution B; Mix and magnetically stir for 1 hour to form solution C; dissolve 3.8g of sodium hydroxide in 10mL of deionized water to form solution D; titrate solution D into solution C to obtain solution E; add 2.7463g of sodium borohydride to solution E, A brown solution F is formed; add the foam sponge to the brown solution F and react for 5 minutes. After the reaction, take the foam copper out of the solution F, wash and dry the obtained black The substance is the target product Co 5 Fe 2 B catalyst.

[0053] It is determined by experiments that the average particle diameter of the surface particles of the twisted ribbon structure exhibited by the catalyst is 180nm.

Embodiment 3

[0055] Weigh 1.4010g ferrous sulfate heptahydrate and 0.2811g cobalt sulfate heptahydrate and ultrasonically dissolve them in 70mL deionized water to form solution A; weigh 4.5042g glycine and dissolve them in 20mL deionized water to form solution B; Mix and magnetically stir for 1 hour to form solution C; dissolve 3.8g of sodium hydroxide in 10mL of deionized water to form solution D; titrate solution D into solution C to obtain solution E; add 6.8094g of sodium borohydride to solution E, A brown solution F is formed; add nickel foam into the brown solution F, and react for 5 minutes. After the reaction, take the foam nickel out of solution F, wash and dry the obtained black solution with an ethanol solution consisting of 20 mL of absolute ethanol and 10 mL of water, and then dry it. The substance is the target product Co 5 FeB catalyst.

[0056] see figure 2 As shown, the catalyst catalyzes the hydrolysis of sodium borohydride to produce hydrogen at a room temperature of ...

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Abstract

The invention discloses a twisted nano strip-shaped Co-Fe-B catalyst as well as a preparation method and application thereof; the chemical formula of the catalyst is CoxFeyB, wherein the ratio of y tox is more than 0 and less than 1; the appearance of the catalyst is of a twisted strip-shaped structure, the surface of the catalyst is composed of nano microspheres, and the particle size of the nano microspheres is 50-200 nm; the catalyst adopts a chemical reduction process; the preparation process is simple, the reaction is rapid, the operation is easy, the investment cost is low, any high-temperature and high-pressure process is not involved, the prepared CoxFeyB nano material avoids the defects that a traditional powder material is easy to agglomerate and difficult to recycle and reuse,has the advantages of high stability and the like, and can be used for catalytic hydrolysis of sodium borohydride to produce hydrogen.

Description

technical field [0001] The disclosure of the invention relates to the technical field of catalyst preparation, in particular to a twisted nanoribbon-shaped Co-Fe-B catalyst, a preparation method and an application thereof. Background technique [0002] Hydrogen energy, because of its cleanliness and high efficiency, has become one of the ideal new energy sources in the future and has broad application prospects. Hydrogen production technology is one of the main problems to be solved in the process of hydrogen energy utilization and development. Among many hydrogen storage materials, sodium borohydride (NaBH 4 ) has become one of the more potential hydrogen storage materials due to its advantages of safe storage, convenient transportation, high hydrogen storage energy density (10.6wt.%), and relatively low cost. Sodium borohydride produces hydrogen by hydrolysis, 1mol NaBH 4 It can combine with water to produce 4mol hydrogen. Therefore, its actual hydrogen production mass...

Claims

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Application Information

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IPC IPC(8): B01J23/75B01J35/02B01J35/08C01B3/06
CPCB01J23/75C01B3/065B01J35/00B01J35/30B01J35/51B01J35/40Y02E60/36
Inventor 王艳李国德武士威周功邹铠潞张迪
Owner SHENYANG NORMAL UNIV
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