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Preparation of tubular silicalite membranes by hydrothermal synthesis with electrophoretic deposition (EPD) as a seeding technique was investigated. Two micrometers of small silicalite seeds were produced by an open‐system hydrothermal synthesis at 100°C. These seeds were dispersed in 1‐propanol and seeded on porous tubular stainless‐steel supports by EPD; it had a high productivity and uniformity. The seeded support was then hydrothermally treated, and a tubular silicalite membrane was obtained. The pervaporation performance of this membrane showed a separation factor α of 70 with a total flux of 0.35 kg·(m2·h)−1 for a 5 vol% EtOH aqueous solution at 30°C.

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