IRMOF-8 bridged and un-bridged composites with Pt on activated carbon catalyst were synthesized with the aim to reproduce the considerable enhancement of hydrogen storage at ambient temperature reported in literature. X-ray powder diffraction patterns, surface areas and pore volumes of the synthesized materials are comparable with the literature data. However, the hydrogen sorption isotherms at room temperature do not exhibit any significant enhancement of hydrogen uptake as compared to the pristine materials. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.