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![Performance of Pd-Ag H2-selective Membrane Fabricated by Surfactant Induced Electroless Plating Via a Novel Substrate Surface Sensitization and Activation Technique için kapak resmi Performance of Pd-Ag H2-selective Membrane Fabricated by Surfactant Induced Electroless Plating Via a Novel Substrate Surface Sensitization and Activation Technique için kapak resmi](/client/assets/d79c3e4af2b6d196/ctx/images/no_image.png)
Performance of Pd-Ag H2-selective Membrane Fabricated by Surfactant Induced Electroless Plating Via a Novel Substrate Surface Sensitization and Activation Technique
Başlık:
Performance of Pd-Ag H2-selective Membrane Fabricated by Surfactant Induced Electroless Plating Via a Novel Substrate Surface Sensitization and Activation Technique
Yazar:
Choudry, Tayyiaba Iqbal, author.
ISBN:
9780355984095
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (77 pages)
Genel Not:
Source: Masters Abstracts International, Volume: 57-06M(E).
Advisors: Shamsuddin Ilias Committee members: Stephen B. Knisley; Debasish Kuila; Jianzhong Lou.
Özet:
Hydrogen is considered a clean, sustainable, and renewable energy carrier. Among several other hydrogen separation technologies, hydrogen selective membranes have proven to be one of the most effective methods. Pd-alloy micro porous stainless steel (MPSS) based H2-selective membranes have drawn significant attention due to high demand for on-board hydrogen generation for fuel cells applications. Pd-alloy membranes are low cost and exhibit high permeability and perfect selectivity for H2 along with tremendous mechanical strength. Surface sensitization and activation is a very important initial process in the fabrication of a composite Pd-alloy membrane. In this investigative research, a new surface activation method for microporous stainless steel (MPSS) support has been developed to prepare the substrate for palladium film deposition, in order to make a H2 selective membrane. In contrast to the conventional surface activation methods, this new surface activation method suggests palladium seeding inside the pores of the MPSS support by sequentially introducing sensitization and activation solutions from the same side of the substrate under vacuum. This technique allows the Pd deposition to start from deep inside the pores and grow out to both ends of the pores sanctioning homogeneous deposition of Pd layer on the substrate surface by surfactant-induced electroless plating (SIEP) technique and stronger anchoring to that Pd layer on the substrate surface, resulting in the enhancement of hydrogen permeate flux and overall cost reduction of the membrane. Pd seeding would also increase the membrane life as it would be a lot easier to just recoat the surface of the substrate with Pd once it starts to diminish due to hydrogen embrittlement. Prior to the surface activation, an oxide layer was formed on the MPSS substrate at 550 ºC for 12 hours acting as an intermetallic diffusion barrier. The activated substrates were characterized by SEM and EDS to study the surface morphology and elemental contents.
Notlar:
School code: 1544
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Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
---|---|---|---|
XX(689812.1) | 689812-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
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