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Catalyst of hydrolytic perparing hydrogen by boron hydride and its preparation method

A borohydride and catalyst technology, applied in the field of catalysts, can solve the problems of uncontrollable hydrolysis reaction, increased catalyst cost, unsustainable reaction, etc., and achieves the effects of good catalytic effect, easy forming and low price.

Inactive Publication Date: 2007-07-18
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, metal halides, as catalysts, are easy to dissolve in the solution, and the hydrolysis reaction is uncontrollable, and the catalyst cannot continue to react with the waste liquid.
However, precious metals such as platinum and rhodium are used as catalysts, which greatly increase the cost of catalysts due to their high price.

Method used

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  • Catalyst of hydrolytic perparing hydrogen by boron hydride and its preparation method
  • Catalyst of hydrolytic perparing hydrogen by boron hydride and its preparation method
  • Catalyst of hydrolytic perparing hydrogen by boron hydride and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0035] Take by weighing 4.30 grams of metal magnesium powder and 5.70 grams of metal nickel powder (atomic ratio Mg: Ni=2~2.05: 1), put into stainless steel ball mill jar, and add appropriate amount of steel balls (metal powder and steel ball mass ratio 1: 5 ~10), ball milled in an argon atmosphere for 60 hours. Every 12 hours, stop the ball mill, shovel the alloy from the wall of the ball mill, and continue ball milling after crushing. The obtained sample is detected through XRD (as shown in Figure 1), mainly by Mg 2 Ni alloy and a small amount of metallic nickel and magnesium oxide. The SEM images of the samples are shown in Figure 3 and Figure 4, and the size of the sample particles is approximately between 1 and 10 microns.

Embodiment 2

[0037] Take by weighing 0.5 gram of alloy sample made in 1 in the embodiment, immerse 10 milliliters of 1MCoCl 2 After 5 minutes in the solution, the reaction proceeds vigorously, and the Mg in the alloy will replace the cobalt ions in the solution, and metal cobalt is coated on the surface of the alloy particles. At the same time, the original magnesium oxide on the alloy surface will generate magnesium hydroxide. The XRD pattern and SEM pattern of the surface-treated sample are shown in Figure 2, Figure 5, and Figure 6, respectively.

[0038] Will go through CoCl 2 After pulverizing the surface-treated samples, add 10 ml of 1M NaBH 4 -1M NaOH aqueous solution, the hydrogen in the solution is released in the form of hydrogen gas very quickly, as shown in Figure 7.

Embodiment 3

[0040] Take by weighing the CoCl in embodiment 2 2 0.4 grams of surface-treated samples are pulverized, mixed with 0.1 grams of carbon black (acetylene black), 0.1 grams of 60% PTFE emulsion and a small amount of water, and mixed evenly. 2 After vacuum drying at 60°C on the foamed nickel substrate, it can be rolled and cut to make a sheet-shaped catalyst.

[0041] Put the catalyst into 10 ml of 1M NaBH 4 -In 1M NaOH solution, 500 ml of hydrogen can be released in 5 minutes, and the remaining about 350 ml of hydrogen can be released in about 5 minutes.

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Abstract

A catalyst for hydrolyzing boron hydride to prepare H2 has a chemical formula Mgp-xAxNi1-yDy, where A is chosen from Al, Mn, Sn, Ca, Li, B, La and RE mixture, D is chosen from Cu, Ti, Co, Fe, Zr and V, p=1.5-2.5, x=0-1.5 and y=0-0.5. Its preparing process is also disclosed.

Description

(1) Technical field [0001] The invention relates to a catalyst for hydrolyzing borohydride to produce hydrogen. (2) Background technology [0002] Energy is the basis of production and social activities in modern society. At present, the energy consumed by people mainly comes from fossil energy, but the reserves of fossil energy are limited after all, so the development of clean new energy has always been a problem that countries are currently striving to solve. Hydrogen energy is generally considered to be a clean energy source in the future, with the advantages of high energy utilization efficiency and zero emissions. [0003] At present, because the amount of hydrogen used is still relatively small, it is mostly obtained through electrolysis of water or catalytic cracking of hydrocarbons, but this requires a lot of extra energy, and the volumetric energy density of hydrogen is very low and it is difficult to store and carry. These problems have hindered the large-scale ...

Claims

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Application Information

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IPC IPC(8): B01J23/78B01J23/74C01B3/06
CPCY02E60/36
Inventor 王连邦马淳安毛信表朱英红
Owner ZHEJIANG UNIV OF TECH
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