Development of thin Pd–Ag supported membranes for fluidized bed membrane reactors including WGS related gases

Development of thin Pd-Ag supported membranes for fluidized bed membrane reactors including WGS related gases. Renewable Energy Global Innovations

 

Ekain Fernandez1,2, Arash Helmi2, Kai Coenen2, Jon Melendez1,3, Jose Luis Viviente1, David Alfredo Pacheco Tanaka1, Martin van Sint Annaland2, Fausto Gallucci2 .International Journal of Hydrogen Energy, Volume 40, Issue 8, 2015, Pages 3506-3519.

Show Affiliations
  1. TECNALIA Research & Innovation, Mikeletegi Pasealekua 2, 20009 San Sebastián-Donostia, Spain.
  2. Chemical Process Intensification, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Den Dolech 2, 5612AD Eindhoven, The Netherlands.
  3. Chemical Engineering and Environmental Department, University of the Basque Country UPV/EHU, C/ Alameda Urquijo s/n, 48013 Bilbao, Spain. 

Abstract

This paper reports the preparation, characterization and stability tests of Pd-based thin membranes for fluidized bed membrane reactor applications. Various thin membranes have been prepared by simultaneous Pd–Ag electroless plating. A simple technique for sealing of the produced membranes is reported and discussed. The membranes have been characterized for single gas permeation, and afterwards used for permeation of mixtures of gases and under fluidization conditions. The membranes have shown very high permeation rates and perm-selectivity when used as permeators. When applied in fluidized bed reactors it has been found that the membranes are stable as long as no interaction between the fluidization catalyst and the membrane surface occurs. For some catalysts a strong chemical interaction between the catalyst and the membrane surface has been observed which caused a drastic decrease in the membrane flux.

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