| 초록 |
Hydrogen has attracted increasing attention as a renewable energy carrier. Since hydrogen has a low volumetric energy density with safety issues, an innovative hydrogen storage method is necessary to widely utilize hydrogen for numerous energy applications. To address this issue, a number of potential hydrogen storage materials have been proposed. In particular, materials that use liquid chemicals have advantages on high volumetric energy storage densities with safe and cost effective transportation. One of such appealing chemicals is formic acid (FA), which can be easily transported into a desired site with high economic feasibility and further release H2 on demand even at ambient conditions. However, H2 release via FA decomposition (HCOOH→H2+CO2) can also produce an undesired byproduct, carbon monoxide through dehydration (HCOOH→H2O+CO) which is detrimental to fuel cell applications. It is thus necessary to develop highly selective and active catalysts. We present here the preparation, characterization, and H2–release properties of novel metal composite catalysts and their catalytic activities toward FA dehydrogenation. |
