INVESTIGADORES
TARDITI Ana Maria
artículos
Título:
PdAu membranes supported on top of vacuum-assisted ZrO2 modified porous stainless steel substrates
Autor/es:
ANA TARDITI, CAMILA GERBONI AND LAURA CORNAGLIA
Revista:
JOURNAL OF MEMBRANE SCIENCE
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2013 vol. 428 p. 1 - 10
ISSN:
0376-7388
Resumen:
To
enable the formation of defect-free PdAu composites by electroless plating, the
vacuum-assisted ZrO2-modified method was optimized on top of porous
stainless steel disks. Both the ZrO2-modified supports and the PdAu
synthesized membranes were characterized by XRD (X-ray diffraction), SEM
(Scanning Electron Microscopy), EDS (Energy Dispersive X-ray analysis) and XPS
(X-ray photoelectron spectroscopy). SEM cross-section results showed that
dense, continuous, defect-free PdAu films were deposited on top of the ZrO2-modified
PSS disks, and the EDS data indicated that no significant concentration gradient
was present on the thickness. At 400
°C and 100 kPa, the pure hydrogen permeation flux for a
10 mm thick PdAu membrane was about 0.14 mol s-1 m-2 and the H2/N2
ideal selectivity was higher than 10,000.