Fabrication, characterization and catalytic oxidation of propylene over TS-1/Au membranes

Gold nanoparticles supported titanium silicalite-1 (TS-1) membranes have been synthesized by the hydrothermal method over tubular porous α-alumina material. Thickness of the calcined TS-1/Au membrane is found to be approximately 25–30 μm and it exhibited helium permeability in the order of 10−8. The membranes with different amounts of titanium and gold contents are characterized by XRD, SEM, EDX, UV–vis, ICP, and gas permeation. The TS-1/Au membranes show promising catalytic activity in the epoxidation of propylene into propylene epoxide using a mixture of H2 and O2 as an oxidant under vapor phase reaction conditions.

Gold nanoparticles supported TS-1 membranes have been prepared over tubular porous α-alumina and it showed good catalytic activity in the epoxidation of propylene into propylene epoxide by using a mixture of H2 and O2. Figure optionsDownload high-quality image (97 K)Download as PowerPoint slideHighlights
► Gold particles are supported over titanium silicalite material TS-1.
► Tubular porous α-alumina used as support.
► TS-1/Au membrane has been fabricated and characterized.
► Catalytic oxidation of propylene studied in a flow reactor.
► O2/H2 mixture used as an oxidant.