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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,...
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