Open AccessHydrogen Permeation of Pd-Cu/Alumina Composite Membranes Fabricated by Combined Sol-gel and Less-electric Plating Technique
Author(s) -
Ratna Sari,
Sri Mulyati,
Ratni Dewi,
Lukman Hakim
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/536/1/012046
Subject(s) - hydrogen , membrane , materials science , permeation , scanning electron microscope , hydrogen purifier , analytical chemistry (journal) , ceramic , alloy , plating (geology) , ceramic membrane , chemical engineering , metallurgy , chemistry , composite material , chromatography , hydrogen production , organic chemistry , biochemistry , engineering , geophysics , geology
The demand for purified hydrogen (CO < 10 ppm) has led to the development of the use of a dense Pd or Pd alloy membrane which selectively permeates the only hydrogen to produce ultra-pure hydrogen. In this work, a combined sol-gel process and a less-electric plating technique were used to prepare Pd-Cu coated ceramic alumina membranes tube. Scanning electron microscopy (SEM) and energy-dispersive X-ray(EDX) were used to characterize the membranes. Permeation tests hydrogen and nitrogen single gas were performed in a temperature range 300-500°C and with pressure range 1.08-1.38 atm. It is found that the highest hydrogen flux of 1.3 mol m 2 s −1 was obtained at temperature 500°C and pressure difference 0.38 atm. The highest H 2 /N 2 selectivity of 105 was obtained at temperature 500°C and pressure difference 0.08 atm.