Sökning: "H2O"

Visar resultat 1 - 5 av 239 avhandlingar innehållade ordet H2O.

  1. 1. Optical and Raman Spectroscopic Studies on H2O at High Pressure

    Detta är en avhandling från Uppsala : Institutionen för geovetenskaper

    Författare :Sara Nanna Kristina Sundberg; Uppsala universitet.; [2005]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; H2O; diamond anvil cell; equations of state; Raman spectroscopy; interferometry; Geovetenskap; NATURAL SCIENCES Earth sciences; NATURVETENSKAP Geovetenskap;

    Sammanfattning : In this thesis, volumetric, optical and vibrational properties of H2O were studied at high pressures by combining techniques of Raman spectroscopy, interferometry and optical imaging. Pressures up to 7 GPa were generated in the diamond anvil cell (DAC), entering the stability fields of liquid water and ices VI, VII and VIII. LÄS MER

  2. 2. High Temperature Corrosion of Stainless Steels in Low Oxygen Activity Environments -The effect of H2 and H2O

    Detta är en avhandling från Uppsala : Institutionen för geovetenskaper

    Författare :Hamed Hoseini Hooshyar; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; pre-oxidation; chromia former; H2O; High Temperature Corrosion; alumina former; H2;

    Sammanfattning : Gasification of biomass and waste is promising for reducing the use of fossil fuels. While the operation conditions of superheaters and gas coolers in the gasifier are restricted by gas-side corrosion, scientific investigations are very scarce in this field. LÄS MER

  3. 3. High Temperature Oxidation and Chlorination of FeCrAl alloys

    Detta är en avhandling från Uppsala : Institutionen för geovetenskaper

    Författare :Niklas Israelsson; [2014]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; KCl; pre-oxidation; FeCrAl; H2O; high-temperature corrosion; kinetics;

    Sammanfattning : AbstractThe constant strive for improved efficiency and lower-cost industrial processes often results in progressively higher temperatures and more aggressive environments. High- temperature corrosion is a well-known problem in biomass- and waste-fired boilers and is one of the obstacles to overcome in achieving a more sustainable society. LÄS MER

  4. 4. High Temperature Oxidation and Corrosion of Ni-Based Superalloys for Industrial Gas Turbines

    Detta är en avhandling från Uppsala : Institutionen för geovetenskaper

    Författare :Haiping Lai; [2014]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; H2O; Ni-based superalloys; Pt; electron microscopy.; surface treatment; atmosphere Na2SO4; SO2; coating; oxide scale;

    Sammanfattning : High temperature oxidation and corrosion of Ni-based superalloys used for blades in industrial gas turbines was studied using advanced high-resolution electron microscopy methods. Both coated and non-coated alloys were tested. LÄS MER

  5. 5. Computational studies of nickel catalysed reactions relevant for hydrocarbon gasification

    Detta är en avhandling från Borås : Högskolan i Borås

    Författare :Abas Mohsenzadeh; Högskolan i Borås.; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; DFT; H2O; CO; adsorption; dissociation; formyl; hydrocarbon combustion; hydrocarbon synthesis; water gas shift; gasification; Ni 111 ; Ni 110 ; Ni 100 ; Resource Recovery; Resursåtervinning;

    Sammanfattning : Sustainable energy sources are of great importance, and will become even more important in the future. Gasification of biomass is an important process for utilization of biomass, as a renewable energy carrier, to produce fuels and chemicals. LÄS MER