title: Supported Pd-Au Membrane Reactor for Hydrogen Production: Membrane Preparation, Characterization and Testing.
abstract: A supported Pd-Au (Au 7wt%) membrane was produced by electroless plating deposition. Permeation tests were performed with pure gas (H₂, H₂, N₂, CO₂, CH₄) for long time operation. After around 400 h under testing, the composite Pd-Au membrane achieved steady state condition, with an H₂/N₂ ideal selectivity of around 500 at 420 °C and 50 kPa as transmembrane pressure, remaining stable up to 1100 h under operation. Afterwards, the membrane was allocated in a membrane reactor module for methane steam reforming reaction tests. As a preliminary application, at 420 °C, 300 kPa of reaction pressure, space velocity of 4100 h(-1), 40% methane conversion and 35% hydrogen recovery were reached using a commercial Ni/Al₂O₃ catalyst. Unfortunately, a severe coke deposition affected irreversibly the composite membrane, determining the loss of the hydrogen permeation characteristics of the supported Pd-Au membrane.
authors.affiliation: Institute on Membrane Technology of the Italian National Research Council (TM-CNR), Cubo 17/C, University of Calabria, Rende 87036, Italy. a.iulianelli@itm.cnr.it.
authors.forename: Adolfo
authors.initials: A
authors.lastname: Iulianelli
authors.affiliation: Institute on Membrane Technology of the Italian National Research Council (TM-CNR), Cubo 17/C, University of Calabria, Rende 87036, Italy. marjan.alavi@ymail.com.|Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz 71345, Iran. marjan.alavi@ymail.com.
authors.forename: Marjan
authors.initials: M
authors.lastname: Alavi
authors.affiliation: Institute on Membrane Technology of the Italian National Research Council (TM-CNR), Cubo 17/C, University of Calabria, Rende 87036, Italy. gb_87@hotmail.it.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Bagnato
authors.affiliation: Department of Energy Resources Engineering, Stanford University, Stanford 94305, CA, USA. sliguori@stanford.edu.
authors.forename: Simona
authors.initials: S
authors.lastname: Liguori
authors.affiliation: Department of Energy Resources Engineering, Stanford University, Stanford 94305, CA, USA. wilcoxj@stanford.edu.
authors.forename: Jennifer
authors.initials: J
authors.lastname: Wilcox
authors.affiliation: Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz 71345, Iran. rahimpor@shirazu.ac.ir.
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Rahimpour
authors.affiliation: Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz 71345, Iran. eslamlo@shirazu.ac.ir.
authors.forename: Reza
authors.initials: R
authors.lastname: Eslamlouyan
authors.affiliation: Department of Energy Resources Engineering, Stanford University, Stanford 94305, CA, USA. brlz@stanford.edu.
authors.forename: Bryce
authors.initials: B
authors.lastname: Anzelmo
authors.affiliation: Institute on Membrane Technology of the Italian National Research Council (TM-CNR), Cubo 17/C, University of Calabria, Rende 87036, Italy. a.basile@itm.cnr.it.
authors.forename: Angelo
authors.initials: A
authors.lastname: Basile
mesh_terms: D006046:Gold / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry*; D008697:Methane / Q000737:chemistry; D010165:Palladium / Q000737:chemistry*; D013227:Steam; D013499:Surface Properties
chemical_list: D013227:Steam; D010165:Palladium; D006046:Gold; D006859:Hydrogen; D008697:Methane
keywords: Pd-Au membrane; composite membrane; hydrogen production; methane steam reforming