Perspectives of suspension plasma spraying of palladium nanoparticles for preparation of thin palladium composite membranes

Recent Developments in Compact Membrane Reactors with Hydrogen Separation

“…Rahimpour et al reviewed applications and preparation methods of palladium membranes. The main preparation methods for Pd-based membranes mentioned by Rahimpour et al include electroless plating, metal organic chemical vapor deposition (MOCVD), and physical vapor deposition (PVD) plasma sputtering [5], while suspension plasma spraying (SPS), an also promising technique [6], is not mentioned. Fernandez et al presented a paper on the research at Tecnalia, and TU/e using a fluidized bed membrane reactor concept with methane or biogas as feedstock [7], underlining the feasibility of compact small-scale hydrogen production.…”

“…A promising approach combining both advantages from porous ceramic and metallic supports is, therefore, the fabrication of composite membranes on sinter metal supports with ceramic diffusion barrier layers, like reported, e.g., in [6,28,29,30,31]. Choosing suitable materials for the sinter metal support and the diffusion barrier layer influences the long-term stability of the fabricated composite membrane.…”

“…Time requirements to fabricate layers with thicknesses in the 10 µm range lie in the range of minutes. Substrates do not have to be activated like in the case of electroless plating, and no metal-loaded liquid waste is produced [6,30].…”

“…Plasma spray processes, and especially the suspension plasma spray process, are very complex, depending on a variety of variables, such as the particle size and agglomeration state of the particles (in the suspension or powder), the solvent used when suspensions are injected, the injection speed and rate, the plasma parameters, such as plasma gas composition and flow rate, plasma current, spraying distance, and spraying atmosphere, and the substrate temperature and surface properties [6,40,41].…”

Design and manufacture of functional catalyst-carrier structures for the bioorthogonal activation of anticancer agents

“…chemical 27 and physical 28 ), electrochemistry 29 (i.e. electroless and electroplating 30 ), plasma or thermal spraying 31 have been previously reported. In this study titanium was used as the substrate and it was coated using palladium element in its unalloyed state, i.e.…”