Fe-Ni-Ce catalyst alloy powder and preparation method and application thereof

A fe-ni-ce, alloy powder technology, applied in chemical instruments and methods, process using ultra-high pressure, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of high cost, powder oxygen content High, affecting the quality of synthetic diamond and other problems, to achieve the effect of easy operation, large grain size, less defects

Pending Publication Date: 2022-08-09
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst powder prepared by the inert gas atomization method has the advantages of high sphericity and low oxygen content, but the cost is high, and the recovery device needs to be built for the inert gas; the high-pressure water atomization method has less investment and low cost, but the iron-based catalyst Powder smelting in the atmosphere, water atomization preparation process and powder storage process can easily cause high oxygen content in the powder, which affects the quality of synthetic diamond

Method used

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  • Fe-Ni-Ce catalyst alloy powder and preparation method and application thereof
  • Fe-Ni-Ce catalyst alloy powder and preparation method and application thereof
  • Fe-Ni-Ce catalyst alloy powder and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Pretreatment of nickel mesh

[0033] The nickel mesh cut into 2cm × 2cm was placed in anhydrous ethanol for ultrasonic cleaning for 10 minutes; after being rinsed with deionized water, the nickel foam was soaked in dilute hydrochloric acid for ultrasonic cleaning for 10 minutes; then rinsed with deionized water and dried. spare.

[0034] (2) Configure the electrolytic aqueous solution

[0035] Weigh NiSO 4 ·6H 2 O, FeSO 4 ·7H 2 O. Ce 2 (SO 4 ) 3 , NH 4 Cl, sodium citrate, H 3 BO 3 Add deionized water, fully stir until completely dissolved, adjust the pH value to 5 with dilute hydrochloric acid to obtain an electrolytic aqueous solution, the electrolytic aqueous solution contains 60g / L NiSO 4 ·6H 2 O, 20g / L FeSO 4 ·7H 2 O, 22g / L Ce 2 (SO 4 ) 3 , 60g / L NH 4 Cl, 50g / L sodium citrate, 35g / LH 3 BO 3 .

[0036] (3) Fe-Ni-Ce catalyst alloy powder produced by ultrasonic-assisted electrodeposition

[0037] A constant current double anode single cathode ...

Embodiment 2

[0040] (1) Pretreatment of Raney Nickel

[0041] The Raney nickel cut into 2cm×2cm was placed in anhydrous ethanol for ultrasonic cleaning for 10min; after rinsing with deionized water, the nickel foam was soaked in dilute hydrochloric acid for ultrasonic cleaning for 10min; then rinsed with deionized water, Dry and reserve.

[0042] (2) Configure the electrolytic aqueous solution

[0043] Weigh NiSO 4 ·6H 2 O, FeSO 4 ·7H 2 O. Ce 2 (SO 4 ) 3 , NH 4 Cl, sodium citrate, H 3 BO 3 Add in deionized water, fully stir until completely dissolved, adjust the pH value to 6 with dilute hydrochloric acid to obtain an electrolytic aqueous solution, the electrolytic aqueous solution contains 40g / L NiSO 4 ·6H 2 O, 20g / L FeSO 4 ·7H 2 O, 15g / L Ce 2 (SO 4 ) 3 , 50g / L NH 4 Cl, 70g / L sodium citrate, 30g / LH 3 BO 3 .

[0044] (3) Fe-Ni-Ce catalyst alloy powder produced by ultrasonic-assisted electrodeposition

[0045] With the step (3) in the embodiment 1, the difference is: t...

Embodiment 3

[0047] (1) Pretreatment of Raney Nickel

[0048] The Raney nickel cut into 2cm×2cm was placed in anhydrous ethanol for ultrasonic cleaning for 10min; after rinsing with deionized water, the nickel foam was soaked in dilute hydrochloric acid for ultrasonic cleaning for 10min; then rinsed with deionized water, Dry and reserve.

[0049] (2) Configure the electrolytic aqueous solution

[0050] Weigh NiSO 4 ·6H 2 O, FeSO 4 ·7H 2 O. Ce 2 (SO 4 ) 3 , NH 4 Cl, sodium citrate, H 3 BO 3 Add in deionized water, fully stir until completely dissolved, adjust the pH value to 6 with dilute hydrochloric acid to obtain an electrolytic aqueous solution, the electrolytic aqueous solution contains 40g / L NiSO 4 ·6H 2 O, 30g / L FeSO 4 ·7H 2 O, 30g / L Ce 2 (SO 4 ) 3 , 70g / L NH 4 Cl, 80g / L sodium citrate, 40g / LH 3 BO 3 .

[0051] (3) Fe-Ni-Ce catalyst alloy powder produced by ultrasonic-assisted electrodeposition

[0052] With the step (2) in the embodiment 1, the difference is: t...

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Abstract

The invention discloses Fe-Ni-Ce catalyst alloy powder as well as a preparation method and application thereof. The preparation method of the Fe-Ni-Ce catalyst alloy powder comprises the following steps: (1) pretreatment of an electrode; (2) preparing an electrolytic aqueous solution containing ferric salt, nickel salt, cerium salt, boric acid, a conductive agent and a complexing agent; and (3) the Fe-Ni-Ce catalyst alloy powder is prepared through ultrasonic-assisted electro-deposition. The prepared Fe-Ni-Ce catalyst alloy powder is small in particle size, developed in dendritic shape and large in specific surface area, the contact area of graphite and the Fe-Ni-Ce catalyst alloy powder can be increased, and then the catalytic performance of the catalyst powder is improved. The ultrasonic-assisted electrodeposition preparation method has the advantages of being simple in process, easy and convenient to operate, low in cost, capable of achieving large-scale production and the like, can be used in the artificial diamond production process and has remarkable practical value and economic value.

Description

technical field [0001] The invention relates to a method for preparing Fe-Ni-Ce catalyst alloy powder for diamond by ultrasonic electrodeposition, a preparation method and application thereof, and belongs to the technical field of catalyst materials used in the production process of artificial diamond. Background technique [0002] Diamond is a superhard multifunctional material with excellent physical and chemical properties such as high hardness and thermal conductivity, wide light transmission band, radiation resistance, strong acid and alkali corrosion resistance, etc. It is widely used in electronic devices, national defense, communications, Aerospace and other high-tech fields have great application potential. (See: Sun Shiyang, Chi Zhongbo, Xu Pingping, et al. First-principles study on the formation and properties of diamond (111) / Al interface [J]. Acta Physica Sinica, 2021, 70(18): 188101.) From G.E. Company The industrial production of diamond has been more than ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J3/06
CPCB01J23/83B01J23/002B01J3/062B01J2203/0655Y02E60/36
Inventor 臧千昊吴艺辉
Owner JIANGSU UNIV OF SCI & TECH
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