Abstract
One of the future technologies for a safe hydrogen storage media is metal hydrides. Currently, Mg-based metal hydride has a safety factor and efficient for vehicle applications. However, the thermodynamic properties of magnesium hydride (MgH2) found a relatively high temperature. High desorption temperatures caused MgH2 high thermodynamic stability resulting desorption enthalpy is also high. In this study, natural mineral (iron ore) has been extracted from iron sand into powder of magnetite (Fe3O4) and used as a catalyst in an effort to improve the desorption properties of MgH2. Magnetie has been successfully extracted from iron sand using precipitation method with a purity of 85 % , where the purity of the iron sand before extracted was 81%. Then, MgH2-Fe3O4 was milling using mechanical alloying method with a variety of catalysts and milling time. The observation by XRD showed the material was reduced to nanocrystalline scale. MgH2 phase appears as the main phase. DSC test results showed with the addition of Fe3O4, the desorption temperature can be reduced up to 366oC, compared to pure pure MgH2 reached by 409o C. Furthermore, based on gravimetric test, the hydrogen release occurs at a temperature of 388o C, weight loss of 0.66 mg during 16 minutes.
Highlights
Teknologi energi masa depan pada penyimpanan media hidrogen yang aman salah satunya menggunakan hidrida logam
Magnetie has been successfully extracted from iron sand using precipitation method with a purity
The observation by XRD showed the material was reduced to nanocrystalline scale
Summary
Teknologi energi masa depan pada penyimpanan media hidrogen yang aman salah satunya menggunakan hidrida logam. Metal hidrida merupakan media penyimpanan hydrogen yang aman dan efisien untuk aplikasi kendaraan. Hidrida logam telah menjadi riset penelitian yang intensif pada saat ini karena aplikasi untuk penyimpanan hydrogen memiliki potensi kapasitas yang tinggi baik dalam massa dan volume. Namun dari termodinamika properties magnesium hidrida (MgH2) didapatkan tempertaur yang relatif tinggi, yang diperlukan selama reaksi absorbsi/desorpsi hidrogen sekitar (300o C – 415oC pada 1 bar). Dalam penelitian ini bahan alam (pasir besi),yang telah di ekstrak menjadi serbuk Fe3O4 dijadikan katalis sebagai upaya untuk memperbaiki sifat sifat serapan dan kinetika reaksi material penyimpan hydrogen berbasis magnesium
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
