Thin and defect-free Pd-based composite membrane without any interlayer and substrate penetration by a combined organic and inorganic process

Abstract

A novel combined organic and inorganic process for preparing thin supported membrane was developed, using which a thin and defect-free Pd membrane with uniform thickness of 5 µm was directly coated onto porous α-Al₂O₃ hollow fiber without any interlayer and substrate penetration; at the same time, there existed a small interstice between membrane and substrate, which led to higher hydrogen permeance, infinite selectivity, and better membrane stability.