Pd–Cu alloy membrane deposited on CeO2 modified porous nickel support for hydrogen separation

摘要: Abstract In this study, the hydrogen permeation behavior of a Pd 93 –Cu 7 alloy membrane deposited on ceria-modified porous nickel support (PNS) was evaluated. PNS, which has an average pore size 600 nm, modified by alumina sol. Alumina sol prepared using precursors that had mean particle 300 nm. Alumina-modified PNS further treated with ceria modification to produce smoother surface morphology and narrow pores. A 7 μm thick made alumina-modified ceria-finished fabricated magnetron sputtering followed Cu-reflow at 700 °C for 2 h. SEM analysis showed contained more clear grain boundaries than PNS. The mounted in stainless steel cell gold-plated O-ring. Permeation tests were then conducted pure helium temperatures ranging from 673 773 K feed side pressures 100 400 kPa. These flux 2.8 × 10 −1  mol m −2  s H 2 /He selectivity >50,000 temperature pressure difference