Mechanism for formation of NaBH4 proposed as low-pressure process for storing hydrogen in borosilicate glass�?�sodium solid system: a hydrogen storage material

Bulletin of materials science

Sabriye PiÅŸkin¹  Aysel Kantürk Figen¹ 

[1] Chemical Engineering Department, Yildiz Technical University, Ä°stanbul, Turkey$$Chemical Engineering Department, Yildiz Technical University, Ä°stanbul, TurkeyChemical Engineering Department, Yildiz Technical University, Ä°stanbul, Turkey$$

关键词: Materials for storage of hydrogen;    sodium borohydride;    borosilicate glass;    mechanism of formation.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The mechanism for the formation of sodium borohydride (NaBH₄) was investigated for its ability to store hydrogen in the borosilicate glassâ€�?�sodium (BSGâ€�?�Na) solid system under low hydrogen pressure. BSG, which was prepared by melting borax with silica, was used as the starting material in the BSGâ€�?�Na system that would be prepared to store hydrogen. It was observed that the mechanism for storing hydrogen in the BSGâ€�?�Na solid system consisted of six steps and when the BSGâ€�?�Na system was heated under a pressure of 4 atm, which was created through the use of hydrogen atmosphere, the storage of hydrogen occurred at nearly 480°C for approximate duration of 200 min, with the excellent yield (97%). In addition, the hydrogen storage capacity of the NaBH₄ sample was measured using the Auâ€�?�PS structure, which was designed as a mini-hydrogen cell. It was determined that the minimum amount of NaBH₄ to generate the maximum volume of hydrogen gas was 12 mg/ml at 270 mV.

【 授权许可】

Unknown