Hydrogen storage characteristics of metal oxide doped Al-MCM-41 mesoporous materials

Abstract

The feasibility and perspectives of Al-MCM-41 as hydrogen storage systems were evaluated. The Al-MCM-41 with varying content of aluminum was synthesized by hydrothermal process. Different metal oxides were impregnated over Al-MCM-41 by incipient wetness impregnation (IWI) method. The crystallnity of the samples were interrogated by powder X-ray diffraction. The textural properties were measured by N-2 sorption method. The structural properties were established by Transmission Electron Microscope (TEM). The gas chromatogram indicates that hydrogen uptake in Al-MCM-41 is strongly dependent on density of Bronsted acid sites and the amount of metal oxide (especially NiO). (c) 2007 Elsevier B.V. All rights reserved.