Preparation of Pd-TS-1 composite membrane for hydrogen separation

Palladium composite membranes have been prepared by improved electroless plating on macroporous alpha-Al2O3 tubes. TS-1 zeolite layer was introduced in the palladium composite membrane to modify macroporous alpha-Al2O3 tubes and prevent the diffusion between Pd and alumina. The detailed microstructure and morphology of the Pd-TS-1 composite membrane were examined by SEM and XRD. Moreover, gas permeation performance was tested at the temperature range of 623 similar to 773K. Results showed that the H-2 permeance and H-2/N-2 ideal selectivity for Pd-TS-1 composite membrane could be up to 3.7x10(-7) mol.m(-2).s(-1).Pa-1 and 310 at 773K, respectively.