Chemical component for hydrogen production by hydrolysis of sodium borohydride

Abstract

The invention relates to a chemical component for hydrogen production by hydrolysis of sodium borohydride. The chemical component provided by the invention is composed of borohydride, acid and water,wherein borohydride and acid are both solid powder. According to the invention, the borohydride is NaBH4 and the acid is H3BO3. The formula consists of: 10-17% of NaBH4, 50-70% of H3BO3, and the balance water. The chemical component has the advantages of high efficiency hydrogen production, safety, environmental protection, convenient use and the like. NaBH4 has high hydrogen storage density and can react with water to generate H2 at room temperature, however, along with the progress of the reaction, the pH of the solution gradually increases, the reaction decreases gradually, and the reactionefficiency is low. Adding of H3BO3 into the system can reduce the pH of the solution and increase the reaction efficiency. H2 is the only gas in the reaction product, thus ensuring the high concentration of H2, and the by-product can be recycled. NaBH4 and H3BO3 are inexpensive, and the hydrogen production cost is low.

Description

1. Technical field [0001] The invention relates to a chemical component for producing hydrogen by hydrolyzing sodium borohydride, which belongs to the field of new energy. 2. Technical background [0002] Hydrogen energy is a secondary energy source, recognized as a clean energy source, and is emerging as a low-carbon and zero-carbon energy source. At present, people mainly obtain H through the following methods: 2 : Water electrolysis hydrogen production, borohydride hydrolysis hydrogen production, methanol reforming hydrogen production, natural gas reforming hydrogen production and coal and coke gasification hydrogen production. Among numerous hydrides, NaBH 4 It has been extensively studied because of its high hydrogen content. NaBH at room temperature 4 The hydrolysis rate in water is slow, and as the reaction proceeds, the pH of the solution is higher and higher, and the hydrolysis rate is slower and slower. [0003] Adding catalyst at room temperature can also sig...

AI Technical Summary

Problems solved by technology

Current metal catalysts catalyze NaBH 4 The main problem of hydrogen production by hydrolysis is the deactivation of the catalyst

Moreover, metal catalysts are often expensive and difficult to industrialize