Stability of pore-plated membranes for hydrogen production in fluidized-bed membrane reactors |
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| Affiliation: | 1. Inorganic Membranes and Membrane Reactors, Sustainable Process Engineering, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, de Rondom 70, 5612 AP, Eindhoven, the Netherlands;2. Department of Environmental and Chemical Engineering (DIATIC), University of Calabria, Via P. Bucci, Cubo 44A, Rende, CS 87036, Italy;3. Dep. of Chemical, Energy and Mechanical Technology, Rey Juan Carlos University, C/ Tulipán s/n, 28933 Móstoles, Spain;1. Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan;2. Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 701, Taiwan;3. International Master Degree Program on Energy, National Cheng Kung University, Tainan 701, Taiwan;4. Green Energy and Environmental Laboratories, Industrial Technology Research Institute, Hsinchu 300, Taiwan;1. School of Chemical and Environmental Engineering, Liaoning University of Technology, Jinzhou 121001, PR China;2. Institute for Materials and Processes, School of Engineering, The University of Edinburgh, Edinburgh EH9 3JL, United Kingdom;1. Chemical Process Intensification, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Den Dolech 2, 5612AD Eindhoven, The Netherlands;2. TECNALIA, Energy and Environment/Industry and Transport Divisions, Mikeletegi Pasealekua 2, 20009 San Sebastián-Donostia, Spain;3. Chemical Engineering and Environmental Department, University of The Basque Country UPV/EHU, C/ Alameda Urquijo s/n, 48013 Bilbao, Spain;1. Department of Environmental and Chemical Engineering (DIATIC), University of Calabria, Via P. Bucci, Cubo 44A, Rende (CS) 87036, Italy;2. Institute on Membrane Technology – National Research Council (ITM-CNR), Via P. Bucci, Cubo 17C, Rende (CS) 87036, Italy;3. Department of Materials Engineering, Hanyang University, Ansan, Gyeonggi-do 426-791, Republic of Korea |
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| Abstract: | Pd-based membranes prepared by pore-plating technique have been investigated for the first time under fluidization conditions. A palladium thickness around 20 μm was achieved onto an oxidized porous stainless steel support. The stability of the membranes has been assessed for more than 1300 h in gas separation mode (no catalyst) and other additional 200 h to continuous fluidization conditions. Permeances in the order of 5·10−7 mol s−1 m−2 Pa−1 have been obtained for temperatures in a range between 375 and 500 °C. During fluidization, a small decrease in permeance is observed, as consequence of the increased external (bed-to-wall) mass transfer resistances. Moreover, water gas shift (WGS) reaction cases have been carried out in a fluidized bed membrane reactor. It has been confirmed that the selective H2 separation through the membranes resulted in CO conversions beyond the thermodynamic equilibrium (of conventional systems), showing the benefits of membrane reactors in chemical conversions. |
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| Keywords: | Membrane Palladium Electroless plating Hydrogen Membrane reactor Fluidized-bed |
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