(608c) Synthesis & Performance Study of Pd-Au/PSS Membrane Reactor to Produce Highly Pure Hydrogen Via Natural Gas Steam Reforming
In recent years, Pd-based composite membranes, i.e., thin metallic layers supported on porous materials such as ceramics or stainless steel, have been considered due to their lower cost (thin Pd layer) and higher mechanical resistant (porous support) compared to dense Pd-based membranes [2,3]. Moreover, the use of Pd-alloys, in particular, Ag, Au, Pt, has grown in the recent years given their ability to resist sulfur poisoning in addition to their enhanced hydrogen permeability . Therefore, the aim of this study was to fabricate a Pd-Au membranes supported on porous stainless steel (PSS) with the intent to produce high-purity hydrogen from natural gas steam reforming. The membrane used in this study was fabricated via an electroless plating technique for depositing Pd and electro-plating for the deposition of Au.
The initial characterization of the membrane by way of ideal selectivity took place at 400 °C with H2, He and N2, and with DP in the range of 1.5 - 3.0 bar. After ideal selectivity characterization of the Pd-Au/PSS membrane, the natural gas steam reforming reaction was carried out and the MR performance in terms of CH4 conversion, hydrogen production and hydrogen permeate purity has been analyzed and will be discussed.
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