Microemulsion-Templated Synthesis of Carbon Nanotube-Supported Pd and Rh Nanoparticles for Catalytic Applications

摘要

Palladium nanoparticles stabilized and dispersed by water-in-oil microemulsions are very active catalysts for hydrogenation of olefins in organic solvents.However,recycling nanoparticle catalysts stabilized in water-in-oil microemulsions is experimentally difficult.Carbon nanotubes(CNTs),due to their unusual properties,are promising carbonaceous materials for supporting catalytic nanoparticles.Because of their small sizes,CNT-supported catalytic nanoparticles can be uniformly dispersed in organic solvents by stirring.Recycling CNT-supported catalytic nanoparticles can be accomplished by gravitational sedimentation.Known methods for depositing catalytic nanoparticles on CNTs including supercritical fluid,solid-state,or aqueous reactions usually require high temperatures or pressures.