PRODUCTION OF HYDROGEN STORAGE TANK WITH PALLADIUM ADDITIVE
BY
ENGR. DR. JIMOH ABDUL
2017
ABSTRACT
Hydrogen has been found to be a safe and cost effective alternative to fossil fuel to power a car. The effects of 0.05 and 0.1 at .% Palladium (Pd) on the hydrogen storage properties of Ti35V40Cr25 alloy were investigated. Melting of the alloys was done in a water-cooled, copper-crucible arc melting furnace under argon atmosphere. The alloys were characterized for phase identification using optical microscopy, x-ray diffractions (XRD), and scanning electron microscopy (SEM) and Electron Diffraction X-ray Spectroscopy (ED) using an oxford system. The pressure-concentration temperature measurements were done using a Sievert apparatus. All the alloys were found to contain mainly body-center-cubic (BCC) with minor αTi or βTi and Laves phases. The absorption capacity increased from 1.89 to 2.50 and 2.51 wt.% with 0.05 and 0.1 at .% Pd, respectively. The useful capacity at both compositions was about 2.16 wt.%. Increase in Palladium from 0.05 to 0.1 at .% had no significant effect on either the absorption/desorption capacities or the thermodynamic properties.
Therefore addition of 0.05 at .% Pd is more effective cost solution to increasing the storage capacity of Ti35V40Cr25 alloys.
Keywords: hydrogen storage properties TiVCr alloy: BCC: αTi or βTi structure.
