Paper Information

Journal:   IRANIAN JOURNAL OF HYDROGEN AND FUEL CELL   2015 , Volume 2 , Number 3; Page(s) 151 To 158.
 
Paper: 

PREPARATION OF A PD COMPOSITE MEMBRANE VIA AN ORGANIC-INORGANIC ACTIVATION METHOD IN THE ELECTROLESS PLATING TECHNIQUE

 
 
Author(s):  JAMSHIDI S., KOUZEHGAR Z., BABALUO A.A.*, HAGHIGHI M.
 
* CHEMICAL ENGINEERING DEPARTMENT, SAHAND UNIVERSITY OF TECHNOLOGY, TABRIZ, ISLAMIC REPUBLIC OF IRAN
 
Abstract: 

A palladium composite membrane was prepared via an electroless plating technique using the organic-inorganic method during the activation process. The ceramic support surface was modified by two TiO2-boehmite and one ?-alumina layers to avoid Pd penetration in the support pores. A thin and defect-free Pd composite membrane was obtained by creating a relative smoothness on the ceramic support and using Pd nanoparticles in the activated layer. The resulting membrane showedan infinite selectivity for H2/Ar with an H2 flux in the range of 0.005-0.035 mol/m2s depending on operating conditions. The hydrogen flux was linearly proportional tothe pressure difference across the membrane at different temperatures and the pressure exponent n was very close to 1. According to the linear relationship of Arrhenius plot, the activation energy Ea of the Pd membrane was calculated to be 22.54 kJ/mol. H2 permeance was kept over 0.023 mol/m2s and the separation factor of H2/Ar was over infinite at 773 K for 240 h, confirming a high potential of the prepared membrane in H2 purification at high temperatures.

 
Keyword(s): PD NANOPARTICLES, INTERMEDIATE LAYER, RELATIVE SMOOTHNESS, PD MEMBRANE, HYDROGEN PURIFICATION
 
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