Nanofibres de carbone sur filtre métallique comme support catalytique structuré
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This thesis covers the analysis of the catalytic growth of carbon nanotubes under well de fined conditions, the optimization of the field emission properties of those structures and introduces a model for the growth mechanism based on the experimental resu ...
Novel efficient structured combustion catalysts based on sintered metal fiber filters (MFF) were developed. To increase sp. surface area (SSA), metal fibers were coated by crack-free porous oxide films of SiO2, Al2O3, porous glass, and mesoporous SBA-15 si ...
The reactivity of the cluster family [Ru-3(CO)(12-x)(L)x] (in which L = PMe3, PMe2Ph, PPh3 and PCy3, x = 1 - 3) towards hydrogen is described. When x=2, three isomers of [Ru-3(H)(mu-H)(CO)(9)(L)(2)] are formed, which differ in the arrangement of their equa ...
The first part of this laboratory study deals with heterogeneous reactions of bromine- and chlorine-containing species relevant to the atmosphere with solid model alkali salt substrates. The second part of this work treats the heterogeneous interaction of ...
Enhanced activity, lower catalyst loading, shorter reaction time, and expanded substrate scope are the advantages of [Mn(dpm)3] over Co catalysts in the hydrohydrazination reaction of alkenes. Thus, sterically hindered alkenes, including tetrasubstituted a ...
Rhodium thin film catalyst supported on YSZ solid electrolyte and interfaced with a dispersed TiO2 layer (Rh/TiO2/YSZ) exhibits the particular behavior of having two distinct stable states, an inactive (oxidized) and an active (metallic) state, with respec ...
An overview is presented of current research at EPFL on structural metallic materials produced by infiltration processing. The paper comprises a brief introduction to the infiltration process, then presents results on particle reinforced metals and open-ce ...
Gold nanoparticles were supported on activated carbon fibers (ACF) using the aq. soln. of [Au(en)2]Cl3 via ion-exchange with surface hydroxyl groups followed by redn. in H2. The obtained catalysts were tested in CO oxidn. at room temp. Surface phenolic gro ...
With a view towards developing a method for molecular laser isotope separation (MLIS) of carbon, silicon and nitrogen, this work investigated the overtone pre-excitation - infrared multiple photon dissociation (OP-IRMPD) of CF3H, SiHCl3 and NH3. The study ...
The oxidn. of nickel gauze catalysts by O2 was investigated by transient response methods. Qual. description of the exptl. transient responses have shown that the oxidn. of metallic nickel proceeds in two stages. The first step is a fast dissocn. of gaseou ...