Open AccessNanoscale Ni as a catalyst in MgH2 for hydrogen storage material
Author(s) -
Adi Rahwanto,
Issham Ismail,
N Nurmalita,
Mustanir,
Zulkarnain Jalil
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1882/1/012010
Subject(s) - hydrogen storage , catalysis , gravimetric analysis , hydrogen , materials science , sorption , chemical engineering , nanoscopic scale , desorption , nanotechnology , metallurgy , chemistry , organic chemistry , adsorption , alloy , engineering
Supplying hydrogen to industrial users is now a major business around the world. One of the problems, before hydrogen can be implemented into today’s infrastructure is storing the hydrogen. In this report, we introduced a high-pressure milling method for preparing the MgH 2 catalyzed with Ni nanoparticle. We have reactively milled the MgH 2 + 2 mol % Ni, which has size ∼90 nm, under 100 bar of hydrogen. The structural changes during milling were characterized by XRD and high-resolution scanning electron microscopy. The hydrogen sorption properties were studied by gravimetric analysis. As the results, it was showed that the milling process reduced into 2 h. The sorption kinetics was proceeding 5.3 wt% of hydrogen around 5 min at 300°C, while desorption in 50 mbar was completed within 4 min. Preparing the Mg-based hydrides under high pressure with 2 mol% Ni in nanoscale as catalyst improved the hydrogen storage properties and decreased the milling time, as well.