Synthesis of Ag-loaded 4A-zeolite composite catalyst via supercritical CO2 fluid for styrene epoxidation

A facile and environmental friendly method is developed for production of 4A-zeolite supported silver nanoparticles composite material using supercritical carbon dioxide technology. The small size and highly dispersed silver nanoparticles are formed on the 4A-zeolite, and the composite material exhibit the excellent catalytic properties in the styrene epoxidation.