| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Zdunek, Joanna
Warsaw University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (34/34 displayed)
- 2023Comparison of the performance properties of commercially produced roller cone bit coatingscitations
- 2021Influence of an aluminizing process on the microstructure and tensile strength of the nickel superalloy IN 718 produced by the Selective Laser Meltingcitations
- 2021Microstructure and Thermoelectric Properties of Doped FeSi2 with Addition of B4C Nanoparticlescitations
- 2021Influence of Hydrostatic Extrusion on the Mechanical Properties of the Model Al-Mg Alloyscitations
- 2020Internal nanocrystalline structure and stiffness alterations of electrospun polycaprolactone-based mats after six months of in vitro degradation. An atomic force microscopy assaycitations
- 2019Structural and electrical studies on Ti/Al-based Au-free ohmic contact metallization for AlGaN/GaN HEMTscitations
- 2019The influence of Mg addition and hydrostatic extrusion HE on the repassivation ability of pure Al, AlMg1 and AlMg3 model alloys in 3.5 wt-% NaClcitations
- 2019Microstructure and thermoelectric properties of p and n type doped β-FeSi2 fabricated by mechanical alloying and pulse plasma sinteringcitations
- 2019New approach to amorphization of alloys with low glass forming ability via selective laser meltingcitations
- 2019Analysis of residual stress in 1.4539 austenitic steel joints welded with TIG method
- 2019Texture, residual stresses and mechanical properties analysis in the commercial 1.4462 duplex stainless steel subjected to hydrostatic extrusioncitations
- 2019The influence of combined hydrostatic extrusion and rolling on the microstructure, texture and mechanical properties of Al-Li alloyscitations
- 2018The crossed – lamellar structure of mollusk shells as biocomposite material
- 2018Formation of the Nitrided Layers on an Austenitic Stainless Steel with Different Grain Structurescitations
- 2018The Influence of Selective Laser Melting (SLM) Process Parameters on In-Vitro Cell Responsecitations
- 2018Effect of structure on corrosion resistance of Mg-Zn-Ca alloy
- 2017Microstructure and strain-stress analysis of the dynamic strain aging in inconel 625 at high temperature citations
- 2017Microstructure and mechanical properties investigation of CP titanium processed by selective laser melting (SLM)citations
- 2017Influence of hydrostatic extrusion process on the microstructure and texture of polycrystalline nickelcitations
- 2017The effect of current types on the microstructure and corrosion properties of Ni/NANOAl2O3 composite coatings
- 2017Heterogeneity of deformation in duplex stainless steel subjected to hydrostatic extrusion
- 2016Synthesis of the RGO/Al2O3 core-shell nanocomposite flakes and characterization of their unique electrostatic properties using zeta potential measurementscitations
- 2016Evolution of microstructure and precipitates in 2xxx aluminum alloy after severe plastic deformationcitations
- 2016Influence of the corrosive environment on the Portevin–Le Chatelier plastic instability phenomenon in Al–1Mg and Al–3Mg model alloys
- 2016Microwave Plasma Chemical Vapor Deposition of SbxOy/C negative electrodes and their compatibility with lithium and sodium Hückel salts - Based, tailored electrolytescitations
- 2016Microstructure evolution and texture development in a Cu-8.5%at. Al material subjected to hydrostatic extrusioncitations
- 2016Investigation of the degradation mechanism of catalytic wires during oxidation of ammonia processcitations
- 2015Influence of the Al (Co, Ni) layer on the corrosion resistance of a cobalt based alloy (Mar-M-509®)citations
- 2015Microstructure and Texture of Hydrostatic Extrusion Deformed Ni Single Crystals and Polycrystalcitations
- 2014Electrochemical and cellular behavior of ultrafine-grained titanium in vitrocitations
- 2014Influence of casting method and heat treatment for corrosion resistance of magnesium alloy AZ91D
- 2013Investigation of degradation mechanism of palladium-nickel wires during oxidation of ammoniacitations
- 2013Analysis of two catalytic systems PtRhPd-PdAu and PtRh-PdAu after long-term exploitation
- 2006Influence of severe plastic deformation on the PLC effect and mechanical properties in Al 5XXX alloy
Places of action
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article
Analysis of two catalytic systems PtRhPd-PdAu and PtRh-PdAu after long-term exploitation
Abstract
In this paper we focused on surface analysis of the two catalytic systems acquired from the industrial reactors after 6 months exploitation. First one is a system including PtRhPd gauze for catalysis and PdAu gauze for catalysis and to capture platinum. Second is commonly used system composed of PtRh catalytic gauzes and PdAu gauzes for catalysis and to capture valuable elements.The investigation was performed using scanning electron microscope HITACHI 3500N with EDS system to analyse the distribution of elements. SEM observations showed intensive redevelopment of the surface of the wires. PtRh and PtRhPd catalytic gauzes are covered by characteristic cauliflower-shaped growths, which number and morphology depend on gas flow direction, and placement of the gauze in the reactor. Samples from the centre and outer part ofthe reactor differ in the degree of exploitation. Both PdAu gauzes surfaces are completely rebuild due to platinum capture phenomena. Surface of the gauzes is covered by spherical porous lumps, which size and morphology depends on the location of the gauze in the reactor. Microscopic observations also showed that the redevelopment of PdAu wires occurs deep into the material. EDS analysis showed that Pt recovery rate is much higher on samples from centre part of catalytic systems (especially on the gas-inflow side of the gauzes). Obtained results can be basis of further investigation of degradation mechanism of precious metals catalytic systems.