Characterization and modification of waste magnesium chip utilized as an Mg-rich intermetallic composite--颗粒学报PARTICUOLOGY

Kantürk Figen, A., & Pişkin, S. (2014). Characterization and modification of waste magnesium chip utilized as an Mg-rich intermetallic composite. Particuology, 17, 158–164. https://doi.org/10.1016/j.partic.2014.01.005

Characterization and modification of waste magnesium chip utilized as an Mg-rich intermetallic composite

Aysel Kantürk Figen ^a, Sabriye Pişkin ^a *

a Department of Chemical Engineering, Yildiz Technical University, Istanbul 34210, Turkey

10.1016/j.partic.2014.01.005

Volume 17, December 2014, Pages 158-164

Received 22 February 2013, Revised 18 January 2014, Accepted 25 January 2014, Available online 30 April 2014.

E-mail: sabriyepiskin@gmail.com; piskin@yildiz.edu

Highlights

• Waste Mg chips (WMCs) were characterized in terms of potential use as a hydrogen storage medium.

• Mechanical milling, tetrahydrofuran and NaCl treatment were applied to modify the WMC surface.

• The obtained Mg-rich intermetallic composite exhibited a hydrogen storage capacity of 4.59 wt%.

Abstract

In this study, the characterization and modification of waste magnesium chips (WMCs), which were produced by plastic molding in a gold manufacturing factory and are used as Mg-rich intermetallic composites in storing hydrogen, were discussed in detail. WMCs were analyzed using X-ray diffraction (XRD), X-ray fluorescence (XRF) spectroscopy, differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and Brunauer–Emmett–Teller (BET) analysis to characterize the materials’ structural properties. Mechanical milling, organic treatment, and inorganic salt addition were carried out to modify the WMCs’ surface to prepare Mg-rich intermetallic composites for storing hydrogen. The modified samples were analyzed using high-pressure volumetric analyses to calculate their hydrogen storage capacity. The authors conclude that modified WMC was promising as an Mg-rich intermetallic composite that was suitable for use in hydrogen storage with a 4.59 wt% capacity at 320 °C under a hydrogen pressure of 60 bar.

Graphical abstract

Keywords

Waste magnesium chip; Characterization; Modification; Hydrogen storage; Intermetallic composite

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