Nanoparticles Nanoparticles as Catalysts in Chemical Reactions

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Other Metal NanoparticleCatalysts• A sample nanoparticle catalyst for the oxidation of methanol is Pt/Ru/Ni nanoparticle alloys.• Nanoclusters of silver atoms have been proven to be effective catalyst for ethyleneepoxidation.• Cluster of atoms are restricted by their method of creation, for example e-beam constructionof nanoclusters results in a minimum particle size of 20nm.• It has also been reported that the addition of base metals such as iron, cobalt and nickel toplatinum also improves the oxygen-reduction reaction rate, but these kinds of base metalsdissolve easily in the acidic environment of a PEFC where the catalyst is working, which is aproblem.http://www.indiana.edu/~bdlab/images/cryovlp.jpg
Nanoparticle Preparation• Preparing a nanoparticle catalyst involves somehowmounting the particles onto a support structure.• The main hurdle in Nanoparticles creation is the lack ofcontrol over shape, size and stability.• Ideally the Nanocatalyst should ldb be stable and have veryprecise dimensions.• The various preparation p routes for creating nanoparticlecatalysts are:• Physical• Chemical• Physicochemicalhttp://www.ims.demokritos.gr/img_research/Dimosthenis1.JPGhttp://chemistry.dal.ca/Images/Zhang/fig1.jpg
Page 1 and 2: Nanoparticles asCatalysts in Chemic
Page 3 and 4: Nanoparticles• significantly diff
Page 5: Synthesis of Nanoparticles• synth
Page 8 and 9: Intro to Catalyst• Back in the ea
Page 10 and 11: Catalysis•lower the rate-limiting
Page 12 and 13: Nanoparticle Catalysts• Nature re
Page 14 and 15: Pt/Pd Nanoparticle Catalysts•The
Page 16 and 17: Gold Nanoparticle Catalystshttp://w
Page 20 and 21: Nanoparticle PreparationChemical Me
Page 22 and 23: Nanoparticle PreparationChemical Me
Page 24 and 25: Nanoparticle PreparationPhysical Me
Page 26 and 27: New AdvancementsFuel CellsCarbon Na
Page 28 and 29: Fuel Cells• began with relatively
Page 30 and 31: CNT cont’d• CNTs can make certa
Page 32 and 33: Other Catalyst Uses• BlkBulk and
Page 34 and 35: Why have nanocatalysts?• Catalyzi
Page 36 and 37: Works Cited• http://carefreeenzym
Page 38: NanoParticle CatalystsNanoParticleC

Nanoparticles Nanoparticles as Catalysts in Chemical Reactions

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