Method for preparing hydrogen with Al alloy material at room temperature

Abstract

The invention discloses an Al alloy material which reacts with water at room temperature to prepare hydrogen, and a use method thereof; the Al content in the alloy material is 3 weight percent to 95 weight percent, and the rest are one type or more than one type among Sn, Zn, Bi, Pb, Mg, Ca and In elements; when Ca and In are contained, the content of Ca and In is not more than 10 weight percent;the alloy material is prepared by melting alloy and then mechanically processing alloy cast ingots into foil-like or sheet-like materials; the material is taken as the raw material for preparing hydrogen, improves the hydrogen preparation capability when the cost is quite low, can prepare hydrogen on a large scale, and is easy to be stored and transported.

Description

technical field [0001] The invention relates to the field of hydrogen energy, in particular to a method for preparing hydrogen at room temperature by using an Al alloy material. Background technique [0002] Energy is the cornerstone of the existence of human society. With the progress of society, the world's energy consumption has increased dramatically. However, petrochemical energy such as coal and oil, the main primary energy used by human beings, is increasingly facing the danger of depletion. At the same time, the combustion of petrochemical energy is the main source of air pollution, which is seriously harmful to the environment. Therefore, it is extremely important and urgent to develop clean and renewable energy. Hydrogen, as a new energy that is currently focused on development, is increasingly valued by people due to the following advantages: hydrogen resources are abundant and widely distributed, where there is water, there is hydrogen; hydrogen is environmental...

AI Technical Summary

Problems solved by technology

This type of metal hydrogen storage material has a large hydrogen storage capacity, but is generally expensive, and certain conditions are required for charging and discharging hydrogen.

In addition to the above methods of preparing hydrogen, NaH, NaH, NaBH are sometimes used 4 Such compounds react with water to produce hydrogen and realize industrialization, but these compounds are either expensive or dangerous, or the by-products have strong alkali and are corrosive

Aluminum is rich in resources and is the metal with the highest mass-to-energy ratio except Li. The preparation of hydrogen by hydrolysis of Al and Al alloy powder is a promising method to provide hydrogen for special occasions, but the preparation, storage and transportation of powder Relatively inconvenient to use

Although the Al-Ga-In system is used and other alloying elements are added, the bulk multi-element Al-based alloy prepared can react with water to generate hydrogen, but the price is relatively expensive due to the ingredients such as Ga and In.

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