Development of selective Pd-Ag membranes on porous metal filters

Metallic supports with sufficient surface quality to achieve highly selective thin Pd-Ag membranes require specific pre-treatments, are not readily available on the market and are generally very expensive. To reduce costs, rough and large media grade Hastelloy X filters have been acquired and pre-treated via polishing and chemical etching. The loss in gas permeance given by the polishing treatment proved fully recovered after chemical

Automated summary

To reduce costs, rough and large media grade Hastelloy X filters have been acquired and pre-treated via polishing and chemical etching to serve as metallic supports with sufficient surface quality for highly selective thin Pd-Ag membranes.