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Influence of SiO2 and Ni as catalyst in MgH2 prepared by mechanical alloying technique
Zulkarnain Jalil ,Malahayati, Ismail, Mursal, Erfan Handoko

1Department of Physics, Syiah Kuala University, Banda Aceh 23111, Indonesia
2Department of Mechanical Engineering, Syiah Kuala University, Banda Aceh 23111, Indonesia
3Department of Physics, Jakarta State University, Jakarta, Indonesia


MgH2 is one of the most promising material for hydrogen storage application, since its reversible and able to store hydrogen in large amounts of 7.6wt%. In this study, nickel and silicon oxide catalysts were used to reduce the operational temperature of MgH2. The silicon oxide used in this study was extracted from rice husks ash. The composition of MgH2 + 10wt% SiO2 + 5wt% Ni was prepared by mechanical alloying technique, by varying milling time 1, 5, 10 and 15 hours. XRD results indicate a decrease in particle size with longer milling time. MgH2 was obtained as the main phase followed by Ni and SiO2. SEM results showed that the longer milling time, the more particle size is homogeneous. Furthermore, thermal investigation using DSC showed that the desorption temperature obtained was in the range of values of 331,8 0C to 342,3 0C. The addition of 10wt% SiO2 and 5wt% Ni have improved sorption temperature and kinetic of MgH2.

Keywords: Magnesium, hydrogen storage, mechanical alloying, catalyst, desorption

Topic: Material Science


Conference: The 4th Annual Applied Science and Engineering Conference (AASEC 2019)

Plain Format | Corresponding Author (Zulkarnain Jalil)

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