Method and device for preparing hydrogen by electrolyzing ammonia

Abstract

The invention belongs to a preparation method of hydrogen and specifically relates to a method and a device for preparing the hydrogen by electrolyzing ammonia. Ammonia is taken as a raw material and foamed nickel on which different noble metals are deposited is taken as an anode and a cathode for an electrolytic hydrogen production reaction; specifically, the cathode and the anode are simultaneously inserted into an ammonia-containing electrolyte, and the external voltage of 0.6-0.8V is applied between the cathode and the anode so that ammonia has an oxidizing reaction to generate nitrogen and water has a reduction reaction to generate hydrogen. The temperature of the electrolytic reaction is controlled between 50 and 60 DEG C. The method for preparing hydrogen by electrolyzing ammonia has the advantages that the electrolytic voltage can be controlled below 0.8V and hydrogen can be prepared economically and effectively.

Description

technical field

[0001] The invention belongs to a method for preparing hydrogen, and in particular relates to a method and a device for preparing hydrogen by electrolyzing ammonia. Background technique

[0002] Hydrogen is ideally the cleanest energy. However, the disadvantages of hydrogen storage and safe use have become a serious obstacle to its application as a vehicle fuel. What urgently needs to be developed at present is to find a convenient, cheap and safe hydrogen storage system, and to find an energy carrier with high hydrogen storage density to indirectly realize the application of hydrogen energy. Ammonia is a good hydrogen storage carrier, which can better overcome the shortcomings of hydrogen in storage, transportation and safety. Ammonia is the most suitable renewable fuel for production other than hydrogen. It is synthesized from hydrogen in water and nitrogen in air, and is reduced to water and air during oxidative combustion. As an alternative fuel, ammoni...

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