Carbon nanomaterials with controlled macroscopic shapes as new catalytic materials

摘要

Carbon nanostructures,i.e.nanotubes and/or nanofibers,with macroscopic shaping were successfully employed as catalyst supports either in gas-phase or in trickle-bed mode.The macroscopic shaping allows the easy handling of these nanomaterials without altering their intrinsic physical and chemical properties and renders them able to be used in a conventional structured catalytic bed without diffusion and pressure drop problems.Several catalytic reactions were demonstrated in the present work including catalytic decomposition of hydrazine for satellite maneuvering,low-temperature selective oxidation of trace amount of H_2S into elemental sulfur and a fuel cell (PEMFC).