Available online 13 June 2013 Hanbo Zou, Shengzhou Chen, Zhaohui Zhao, Weiming Lin
The effects of different pretreatment of the used cans, such as mechanical rubbing, dissolution extraction and heat treatment, on the hydrogen evolution of Al scraps are investigated. It is shown that pretreated Al scraps generate hydrogen much more quickly than sodium borohydride and un-pretreated Al scrap. Different pretreatment methods affect the area of exposed aluminum and the sizes of aluminum particles. The Al scrap pretreated with mechanical method releases hydrogen most quickly, while the Al scrap dealt with calcination method generates more hydrogen than other Al scraps.