Catalyst for sodium borohydride catalyzing hydrolyzation hydrogen supplying method and preparation thereof

A sodium borohydride, catalytic hydrolysis technology, applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve the problem of fast reaction rate, poor safety, and severe hydrogen release and other issues, to achieve low cost, improve binding force, and slow down the effect of erosion

Active Publication Date: 2008-07-09
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fast and uncontrollable direct hydrolysis reaction rate of sodium borohydride, hydrogen is released in an explosive manner, which has the disadvantages of violent dehydrogenation, controllability of dehydrogenation, and poor safety.

Method used

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  • Catalyst for sodium borohydride catalyzing hydrolyzation hydrogen supplying method and preparation thereof
  • Catalyst for sodium borohydride catalyzing hydrolyzation hydrogen supplying method and preparation thereof
  • Catalyst for sodium borohydride catalyzing hydrolyzation hydrogen supplying method and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 3

[0053] Embodiment 3 (embodiment of the present invention)

[0054] 80-100 mesh diatomite, dispersed in absolute ethanol and ultrasonically oscillated for 30 minutes, washed with deionized water, filtered and dried, immersed in an acetone solution of palladium acetylacetonate with a palladium concentration of 5-7g / l for 20-25 minutes, and dried ; then immersed in 345-355g / l cobalt chloride solution for 20-30 minutes, filtered, vacuum-dried at 85-95°C, 10-15g / lNaBH 4 Solution reduction; finally immerse in acetone solution with palladium concentration of 5-7g / l palladium acetylacetonate for 20-25 minutes, dry and heat-treat at 280-320°C for 2-3 hours to synthesize diatomite / palladium / cobalt / palladium catalyst, the maximum catalytic The activity is 1000ml mlH 2 / g cat. embodiment 3 synthetic diatomaceous earth / cobalt catalyst catalytic activity decay curve such as image 3 As shown, the decay is 300mlH after two days 2 / g cat. and kept for 25 days, the catalytic activity and st...

Embodiment 6

[0059] Embodiment 6 (embodiment of the present invention)

[0060] Wash the nickel foam with hydrochloric acid for 10 minutes, wash it with deionized water, dry it, and put 1.3~1.7g / l Pd, 0.2~0.24g / l NH 4 OH, 17.3-17.7g / l EDTA palladium plating solution for 20-30 minutes, rinsed with deionized water, and vacuum-dried at 65-75°C; then placed in 9.5-10.5g / l CoCl 2 , 59-61g / l sodium tartrate, 2.8-3.2g / l borax, 4.2-4.6g / l sodium borohydride mixed solution electroless cobalt plating for 20-30 minutes, rinsed with deionized water, and vacuum-dried at 65-75°C ; Then add Pd containing 1.3~1.7g / l, 0.2~0.24g / l NH 4 OH, 17.3 ~ 17.7g / l EDTA palladium plating solution electroless palladium plating 20 ~ 30 minutes, deionized water cleaning, 65 ~ 75 ℃ vacuum drying, 280 ~ 320 ℃ 2, 2 ~ 3h vacuum heat treatment, synthetic nickel foam / Palladium / Cobalt Catalyst with a maximum catalytic activity of 100ml H 2 / g cat.min, embodiment 6 synthesizes diatomite / cobalt catalyst catalytic activity de...

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Abstract

The invention relates to a preparation method of a high-cost-performance catalyst for hydrogen supply in catalysis and hydrolysis of sodium borohydride. Foamed nickel or sillitin is taken as the carrier, and a first layer of Pd film and Co film, and a second layer of Pd film are prepared on the carrier through a dipping method or a chemical plating method. The invention has stable performance and low cost, and is palladium / cobalt / palladium sandwich type cobalt-based catalyst, wherein, the Pd in the first layer of Pd film is 1.5 to 2 weight percent of sillitin or foamed nickel; the Co in the Co film is 6.8 to 7.2 weight percent of sillitin or foamed nickel; and the Pd in the second layer of Pd film is 1.5 to 2 weight percent of sillitin or foamed nickel. The catalytic activity of the foamed nickel / palladium / cobalt / palladium catalyst still remains 223mlH2 / g.cat.min after the catalyst is stored in 50g / l NaOH solution for 25 days, and the catalytic activity of the foamed nickel / palladium / cobalt / palladium catalyst still remains 53.5mlH2 / g.cat.min after the catalyst is stored in 50g / l NaOH solution for 22 days.

Description

technical field [0001] The invention relates to a cost-effective catalyst for sodium borohydride catalyzed hydrolysis for hydrogen supply and a preparation method thereof. The first layer of Pd film, Co film and second layer of Pd are prepared on diatomite or foamed nickel carrier by impregnation method or electroless plating method. The high-activity, high-stability, and low-cost palladium / cobalt / palladium interlayer catalyst of the membrane realizes the high-efficiency catalytic hydrolysis catalytic method of sodium borohydride to supply hydrogen. Background technique [0002] Human development is closely related to energy. The depletion of fossil fuels, the main body of traditional energy sources, the destruction of the ecological environment, and the need for sustainable development of human society, urgently require research and development of new energy sources. Hydrogen energy is one of the ideal new energy sources due to its storable, efficient and clean properties....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J37/02B01J32/00C01B3/06
CPCY02E60/36
Inventor 刘晓鹏王书明王树茂蒋利军李国斌詹锋宋洋李华玲
Owner GRIMAT ENG INST CO LTD
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