Dissertation > Excellent graduate degree dissertation topics show

Under mild conditions and nano- nano cerium hydride lutetium , ytterbium, dysprosium metal powder preparation and properties of

Author: SunYong
Tutor: FanYinHeng;DanWenJuan
School: Liaoning Normal University
Course: Physical and chemical
Keywords: Organometallic intermediates Vacuum pyrolysis Nano- powders of rare earth metals Nano Rare Earth Hydrides and nitrides
CLC: TB383.1
Type: Master's thesis
Year: 2008
Downloads: 37
Quote: 0
Read: Download Dissertation


Work study is the National Science Fund for Nature - \1 for the first time at atmospheric pressure , 45 ℃ conditions, using catalysis , halogenated hydrocarbons and metals caused by the activation of three methods to make use of solvent effects will direct reaction with hydrogen in the case of cerium , cerium hydride synthesis of nano-sized powder. With X-ray powder diffraction (XRD), transmission electron microscopy (TEM) and BET method on product structure, morphology , particle size and specific surface area were measured, the results showed that the product are face-centered cubic structure CeH 2.73 < / sub>, the basic particle size of 10-20 nm, with a larger surface area 20.4 m 2 / g. Nanocrystalline cerium hydride high activity when the air spark generating , its thermal decomposition to obtain nano cerium . 2 for the first time at room temperature and pressure, using catalytic synthesis of complex organic intermediates genera lutetium , thermal decomposition under vacuum conditions to prepare nano-sized metal powder lutetium . With transmission electron microscopy (TEM), and BET method were used to characterize the test results show that the product is a face-centered cubic crystal lutetium , the average particle size of about 18 nm. Lutetium nano metal powders prepared by high activity , exposure to air, spark , show a higher chemical reactivity . 3 by metal organic intermediates and then its vacuum pyrolysis method of nano ytterbium, dysprosium metal powder. They are highly active , exposed to the air with a spark , to respectively H 2 , N 2 at relatively low reaction temperatures , while nano hydrogenated to give the corresponding and nitride material , showing high chemical reactivity.

Related Dissertations

  1. The Vacuum pyrolysis centrifugal separation technology to achieve organic resin waste printed circuit boards and solder resources,TN41
  2. Nano alkali metal hydrides performance applications and nano lanthanide metals Powder,TB383
  3. Studies on the Synthesis of Benzocyclobutene and Bisbenzocyclobutenes,O625
  4. Waste printed circuit boards with epoxy vacuum pyrolysis pyrolysis oil composition analysis and experimental study,X76
  5. Study on Vacuum Pyrolysis and Recycling of Glass Fibre from Waste Printed Circuit Board,X705
  6. Preparation of ITO Quai-1D Nanostructures by Sol-Gel Method Combined with Porous Anodic Aluminum Oxide Template,TB383.1
  7. Study on the Synthesis Bi3.25La0.75Ti3O12(BLT) Nanotubes and Nano Wires,TB383.1
  8. Hydrothermal Synthesis of Oxide Hollow Spheres,TB383.4
  9. Preparation and Electrocaloric Effect of BaxSr1-xTiO3 Ferroelectric Thin Films,TB383.2
  10. The Preparation and Research of Magnetically Separable TiO2 Photocatalyst Nanofibers,TB383.1
  11. Fire Retardancy Performance of Poly (Ethylene Terephthalate) Containing Melamine Cyanurate,TB383.1
  12. Investigation of Fabrication, Characterization and Property of Fuctional Titanium Dioxide Nanoporous Materials,TB383.1
  13. Investigation of Preparation and Properties of Ordered Porous TiO2,TB383.2
  14. Silica fume wet purified preparation of spherical nano-silica,TB383.1
  15. Study on Separation、 Preconcentration and Analysis of Trace Elements with Carbon Nanometer Materials,TB383.1
  16. Preparation of One-dimensional Nano TiO2 and Study on the Decolorization of Dyeing Wastewater,TB383.1
  17. Preparation, Characterization and Application of Prussian Blue Composite Nanomaterials,TB383.1
  18. Phosphate modification of nano- TiO 2 Photoelectrochemical Properties of the,TB383.1
  19. SnO 2 / CNTs composite Controllable Preparation and Gas Sensitivity Study,TB383.1
  20. Preparation of polyaniline nanostructures , characterization and biomedical applications,TB383.1
  21. Ceria -based materials Preparation and Characterization of Its Properties,TB383.1

CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Special structural materials
© 2012 www.DissertationTopic.Net  Mobile