Preparation and characterization of thin-film Pd-Ag supported membranes for high-temperature applications
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2015-10-19
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Abstract
This paper reports the preparation, characterization and stability tests of thin-film Pd-Ag supported membranes for high-temperature fluidized bed membrane reactor applications. Various thin-film supported membranes have been prepared by simultaneous Pd-Ag electroless plating and have been initially sealed with a sealing procedure previously validated for Water gas shift (WGS) application (400 °C). The membranes have been characterized for single gas and mixed gas permeation, and for methane steam and autothermal reforming in a fluidized bed membrane reactor at 550-600 °C using a Ru-based catalyst. In addition, the performance of these membranes was compared to commercial membranes from REB Research & Consulting under the same reaction conditions. The applied sealing showed nitrogen leaks at 600 °C and different sealing approaches were tested solving this problem. Finally, also the long-term stability of the thin-film Pd-Ag supported membrane at 600 °C has been investigated.
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Publisher Copyright: © 2015 Hydrogen Energy Publications, LLC.
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Autothermal steam reforming , Fluidized bed membrane reactor , High temperature sealing , Membrane stability , Palladium membrane preparation , Condensed Matter Physics , Energy Engineering and Power Technology , Fuel Technology , Renewable Energy, Sustainability and the Environment , SDG 7 - Affordable and Clean Energy
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Fernandez , E , Coenen , K , Helmi , A , Melendez , J , Zuñiga , J , Pacheco Tanaka , D A , Van Sint Annaland , M & Gallucci , F 2015 , ' Preparation and characterization of thin-film Pd-Ag supported membranes for high-temperature applications ' , International Journal of Hydrogen Energy , vol. 40 , no. 39 , pp. 13463-13478 . https://doi.org/10.1016/j.ijhydene.2015.08.050