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Preparation method of Raney's nickel catalyst of fixed bed

A Raney nickel catalyst technology, applied in the field of preparation of high-activity Raney catalysts, can solve the problems of uneven catalytic activity, limited application, low catalyst activity, etc., achieve uniform distribution of catalytic activity, reduce production costs, and good catalytic activity Effect

Active Publication Date: 2009-09-23
HANERGY MOBILE ENERGY HLDG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the activity of the catalyst prepared by this patent is low, and the catalytic activity of each part is not uniform, which also limits the practical application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 6

[0020] The flame spraying equipment in Example 6 is a QT-PS-1 low-temperature metal flame spraying system produced by Shanghai Ruifa Spraying Machinery Co., Ltd.

Embodiment 7

[0021] The arc spraying equipment in Example 7 is the CMD-AS1620 arc spraying system produced by Beijing Xindi Surface Technology Equipment Co., Ltd.

[0022] The fixed-bed Raney nickel catalyst that prepares in the embodiment carries out activity evaluation through following steps: the composition of reaction solution is the NaBH of 5wt% 4 , 10wt% NaOH, 85wt% deionized water. The reactor containing 100mL of reaction solution was placed in a constant temperature water bath at 30°C, and 5g of Raney nickel catalyst was weighed and put into the reaction solution. The ratio of the amount of hydrogen is the catalytic conversion rate of sodium borohydride catalyzed hydrolysis hydrogen production reaction.

Embodiment 1

[0024] ① Soak the nickel foam in acetone for 10 minutes, wash it with dilute hydrochloric acid solution, then wash it with water, and dry it in vacuum at 60°C for 120 minutes;

[0025] ②Use plasma spraying equipment to spray metal aluminum on the nickel foam obtained in step ①, and spray once to obtain aluminized nickel foam;

[0026] ③ The aluminized nickel foam obtained in step ② is roasted at 700°C for 1 hour under the protection of nitrogen, and then leached in 10wt% sodium hydroxide at 60°C for 12 hours to obtain the product.

[0027] The operating conditions of the plasma spraying equipment are as follows: nitrogen is used as the powder feeding gas; a mixed gas of nitrogen and hydrogen (the volume content of hydrogen is 20%) is used as the working gas; and the spraying distance is 100 mm.

[0028] The catalytic conversion rate of the prepared fixed-bed Raney nickel catalyst can be 84% through activity evaluation.

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PUM

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Abstract

The invention discloses a preparation method of Raney's nickel catalyst of a fixed bed, which includes the following steps: foam nickel is placed into an organic solution and immersed for 10-120 minutes, and washed by diluted acid solution and water and then dried; metal aluminum is sprayed on processed foam nickel by a hot spraying method, and aluminum-coated foam nickel is obtained after being sprayed for 1-6 times; the obtained aluminum-coated foam nickel is baked for 0.1-5 hours under the protection of inert gases and at the temperature from 660 DEG C to 1100 DEG C and immersed in a sodium hydroxide or potassium hydroxide solution to obtain the Raney's nickel catalyst. The Raney's nickel catalyst of a fixed bed prepared by the invention has the advantages of high strength, good catalyst activity and uniform catalyst activity. The invention belongs to the filed of catalyst preparation.

Description

technical field [0001] The invention relates to a preparation method of a fixed-bed Raney catalyst, in particular to a preparation method of a high-activity Raney catalyst. Background technique [0002] Hydrogen energy is a future energy development direction proposed by human society to alleviate resource and environmental problems. The core content of this development is to replace existing fossil fuels (coal, oil and natural gas) with hydrogen as a clean, green and portable transport fuel. The fuel cell using hydrogen as fuel is an efficient and clean power generation device, and has gradually become an ideal supporting power source for portable electronic products and electric vehicles. At present, the main problem restricting the development and application of fuel cells is the storage of hydrogen. However, the hydrogen storage methods widely used today have low hydrogen storage capacity, such as hydrogen storage in high-pressure gas cylinders and hydrogen storage allo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J25/02
Inventor 肖钢李贺王玉晓
Owner HANERGY MOBILE ENERGY HLDG GRP CO LTD
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