Preparation and characterization of palladium-plated porous glass for hydrogen enrichment

Ultrathin palladium membranes prepared by a novel electric field assisted activation

“…The most widely used preparation method for palladium membranes is the electroless plating (ELP) technique due to its ease of coating on any material of arbitrary shape, low cost and use of simple equipment [19]. In many cases it has been found that a minimum thickness of 5 m of Pd is required for obtaining a flawless selective layer by ELP [8,12,20,21], however, there are reported membranes of thickness of 3 m or even less [22,23].…”

Performance and Long-Term Stability of Pd/PSS and Pd/Al2O3 Membranes for Hydrogen Separation

“…Currently, the studies of scientists in this area are mainly devoted to the development of Pd-based composite membranes characterized by a thin metallic layer deposited onto porous substrates, showing such benefits as high hydrogen permeability, selectivity towards hydrogen permeation, and mechanical resistance [ 4 , 5 , 6 , 7 ]. Typical substrate materials for composite membranes are stainless steel and ceramics [ 8 , 9 , 10 , 11 , 12 ]. Stainless steel sintered porous supports are particularly suitable owing to good weldability and mechanical strength.…”

Effects of process parameters on the synthesis of palladium membranes

“…The porosity and the mean pore radius of the calcined substrate (at 550°C) were 0.46 and 1.3 Â 10 3 nm, respectively [11]. Firstly, the substrates were cleaned with sodium hydroxide solution and then with hydrochloric acid solution.…”

“…It was suggested that reducing agents that generate hydrogen are not suitable for electroless plating of palladium membrane. Electroless plating studies were carried out in a specially designed glass vessel by Altinisik et al [11]. Helium gas was continuously bubbled through the solution to remove hydrogen gas from the surface for the case of hypophosphite-based bath.…”