In order to increase gas storage capacity such as hydrogen and methane, various wt% of cobalt were decorated on the surface of MWCNTs which was already treated nitric and sulfuric acids to provide functional groups on the surface of MWCNTs. The characteristic peak of SO4 in FT-IR spectrum was at 1220 cm, which was resulting from sulfuric acid treatment. This peak implies that acid treatment con...

Lithium borohydride (LiBH4) has been attracting extensive attention as an exemplary high-capacity complex hydride for solid-state hydrogen storage applications because of its high capacities (18.5 wt% and 121 kg H2 m−3). However, the strong highly directional covalent ionic bonds within LiBH4 structure induce desorption temperatures, slow kinetics, poor reversibility, which make large-scale app...

the current study assesses the root causes of hydrogen blisters on low strength carbon steel equipment. for this purpose, some experiments including hardness test, non-destructive test (ndt), metallography, and fractograpghy are conducted. the microstructure of two blisters is assessed by means of optical microscopy and scanning electron microscopy (sem). the microstructural studies show that t...