Hydrogen production method by hydrolysis of aluminum-calcium alloy

An aluminum-calcium alloy, hydrolysis hydrogen production technology, applied in the direction of hydrogen production and other directions, can solve the problems of low hydrogen production rate per unit mass, high price, low hydrogen production rate and the like

Inactive Publication Date: 2011-01-19
CENT SOUTH UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

When the aluminum content in the alloy is very high, due to the limited amount of dissolved aluminum in gallium, only part of the aluminum can be dissolved, so that the utilization rate of aluminum is very low, and finally the hydrogen production rate per unit mass of the alloy is very low; therefore, it is necessary to To improve the hydrogen production efficiency of aluminum, it must be completely dissolved in gallium metal, so that the content of gallium in the alloy will definitely increase. Since gallium does not participate in the reaction, the hydrogen production rate per unit mass will also be very low as a result.
In addition, the content of metal gallium on the earth is also very small, so the price is very expensive, as high as 4000 yuan / kg, which is much more expensive than aluminum

Method used

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  • Hydrogen production method by hydrolysis of aluminum-calcium alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Put 0.5g calcium-aluminium-calcium alloy containing 2wt% calcium and 20wt% NaCl in the reactor, then inject 20ml of pure water at 30°C, and carry out the reaction for 60 minutes; measure the mass of the hydrogen-discharged water by automatic weighing and recording balance , converted into hydrogen volume, the hydrogen yield was 98% by calculation.

Embodiment 2

[0027] Put 0.5g of calcium-containing 5wt% and KCl-containing 15wt% aluminum-calcium alloy in the reactor, then inject 20ml of NaCl solution at 30°C, and react for 60 minutes; measure the mass of hydrogen gas discharged by automatic weighing record balance , converted into hydrogen volume, the hydrogen yield was calculated to be 98.7%.

Embodiment 3

[0029]Put 0.5g calcium-containing 10wt% calcium alloy and 7wt% NaCl-containing aluminum-calcium alloy in the reactor, then inject 20ml pure water at 100°C, and react for 60 minutes; measure the mass of hydrogen gas discharged by automatic weighing and recording balance , converted into hydrogen volume, the hydrogen yield is 100% by calculation.

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Abstract

The invention provides a hydrogen production method by hydrolysis of an aluminum-calcium alloy, wherein, aluminum and calcium in different mass percentages are taken as raw materials, and salt is taken as an activating agent. The obtained aluminum-calcium alloy can react with aqueous solution at different initial temperatures to produce hydrogen rapidly. In addition, hydrogen production rate and yield can be adjusted by changing the percentage of components in the alloy. The aluminum-calcium alloy can inhibit generation of an inertia alumina membrane on a surface, greatly improve the hydrogen production rate of the alloy per unit mass and lower hydrogen production cost.

Description

technical field [0001] The invention relates to a method for producing hydrogen by hydrolyzing an aluminum-calcium alloy, which belongs to the field of hydrogen energy preparation. Background technique [0002] Hydrogen energy is an excellent energy carrier and the most ideal secondary energy source. The energy value per unit mass of hydrogen is the highest, and the product of hydrogen energy combustion (chemical combustion and electrochemical combustion) is only water, and does not emit any substances that pollute the environment. It is a green energy in the true sense. The development of hydrogen energy is of great significance to alleviate and reduce the current world energy crisis and greenhouse gas emissions, and improve the global environment. Although hydrogen energy has incomparable advantages over other energy sources, and its development and utilization are receiving great attention, its promotion and popularization still face many difficulties, the most important...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/08
CPCY02E60/36
Inventor 赵中伟陈星宇郝明明
Owner CENT SOUTH UNIV
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