Sökning: "SiO2"

Visar resultat 31 - 35 av 245 avhandlingar innehållade ordet SiO2.

  1. 31. Preparation of New Catalytic Materials by Small Particle Technology

    Författare :Anders Törncrona; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : New techniques for preparation of catalytic materials with novel properties are presented in this thesis. Three new catalytic materials; washcoated fibres, highly dispersed metal oxides on titania coated silica particles and discrete colloidal ZSM-5 crystals with a low SiO2/Al2O3 ratio have been prepared and characterised. LÄS MER

  3. 32. Experimental and modelling studies of the thermophysical and thermochemical properties of some slag systems

    Författare :Lijun Wang; Seshadri Seetharaman; Kuo-Chih Chou; Miyuki Hayashi; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Teknisk materialvetenskap;

    Sammanfattning : In order to optimize the metallurgical processes it is necessary to improve the understandings of the industrial slag properties, which include thermophysical and thermochemical properties. In the present study Mass Triangle Model was applied to predict these properties. LÄS MER

  4. 33. Functionalization of polymer electrolytes for electrochromic windows

    Författare :İlknur Bayrak Pehlivan; Gunnar A. Niklasson; Claes-Göran Granqvist; Michel Aegerter; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrochromism; Polymer electrolytes; PEI; LiTFSI; Nanoparticles; Ionic conductivity; Ion-pair relaxation; Near-infrared absorption; Engineering Science with specialization in Solid State Physics; Teknisk fysik med inriktning mot fasta tillståndets fysik;

    Sammanfattning : Saving energy in buildings is of great importance because about 30 to 40 % of the energy in the world is used in buildings. An electrochromic window (ECW), which makes it possible to regulate the inflow of visible light and solar energy into buildings, is a promising technology providing a reduction in energy consumption in buildings along with indoor comfort. LÄS MER

  5. 34. Studies of some thermodynamic aspects related to the production of silicon and ferrosilicon

    Författare :Silvia Tomé Torquemada; Du Sichen; Jesse White; Bjoern Glaser; Bo Björkman; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk materialvetenskap; Materials Science and Engineering;

    Sammanfattning : This thesis presents a fundamental study on some thermodynamic aspects regarding the silicon and ferrosilicon production. The purity requirements for silicon and ferrosilicon alloys are stringent. LÄS MER

  7. 35. Luminescence of Silicon Nanoparticles Synthesized by Ion Implantation

    Författare :Thawatchart Chulapakorn; Anders Hallén; Daniel Primetzhofer; Yanwen Zhang; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Silicon nanoparticle; Photoluminescence; Ion beam synthesis; Ion beam analysis; Fysik; Physics;

    Sammanfattning : Silicon nanoparticles (SiNPs) have been shown to display luminescence in the visible range with a peak wavelength depending on the nanoparticle size. This finding is of potential interest for integration of optoelectronic devices in semiconductor technology. LÄS MER