Abstract
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 25–30μm 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.
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