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Ni‐coated La 2 Ce 2 O 7 / SiC Membrane via DC Magnetron Sputtering
Author(s) -
Song Daheoi,
Jung Miewon
Publication year - 2016
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.10789
Subject(s) - membrane , materials science , sputter deposition , scanning electron microscope , analytical chemistry (journal) , permeation , sputtering , chemical engineering , hydrogen , nuclear chemistry , chemistry , nanotechnology , thin film , composite material , chromatography , biochemistry , organic chemistry , engineering
La 2 Ce 2 O 7 powder was synthesized through hydrolysis and polycondensation processes. A La 2 Ce 2 O 7 / SiC composite membrane was fabricated using SiC and La 2 Ce 2 O 7 powder with phenolic resin. For surface modification, Ni metal was coated onto the membrane via DC magnetron sputtering. The membranes were characterized by X‐ray diffraction ( XRD ), field emission‐scanning electron microscopy ( FE‐SEM ), and pore size distribution analyses. Hydrogen and CO gas permeation experiments were performed through the use of Sievert's type equipment. Both fluxes decreased with increasing temperature and followed the Knudsen and surface diffusion mechanisms. The hydrogen permeability of the membrane was determined as 1.17 × 10 −5 mol/ m 2 sPa with a permselectivity ( H 2 / CO ) of 2.30 at 303 K.