Search for dissertations about: "chloride oxidation"

Showing result 16 - 20 of 52 swedish dissertations containing the words chloride oxidation.

  2. 16. The High Temperature Corrosion of Alloy Sanicro 28

    Author : Carolina Pettersson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; alkali induced corrosion; chromate formation; Sanicro 28; oxidation of stainless steel; KCl induced corrosion;

    Abstract : This thesis investigates the influence of potassium chloride in solid and gaseous form on the oxidation of alloy Sanicro 28 (35Fe27Cr31Ni). KCl induced corrosion of chromia forming alloys is important e.g. in fireside corrosion in biomass and waste fired power plants. READ MORE

  4. 17. High Temperature Corrosion of Some Stainless Steels

    Author : Carolina Pettersson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; oxidation of stainless steel; alkali induced corrosion; KCl induced corrosion; Sanicro 28; chromate formation;

    Abstract : The high temperature corrosion of the alloy Sanicro 28 (35Fe27Cr31Ni) is addressed in this thesis. The influence of water vapour and two potassium-containing salts was investigated. In addition, three other alloys were studied. Polished steel coupons were isothermally exposed in tube furnaces at 600–800°C in 5% O2 and in 5% O2 + 40% H2O. READ MORE

  5. 18. Methanol and formic acid oxidising anodes in zinc electrowinning

    Author : Maria Wesselmark; Göran Lindbergh; Magali Boutonnet; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical engineering; Kemiteknik;

    Abstract : Electrowinning is an energy demanding process, in which the electrolysis accounts for the major part of the energy consumption. The anodic reaction in the electrolysis of zinc from sulphate based electrolytes is oxygen evolution, which has a standard potential of 1.23 V at 25 ºC. READ MORE

  6. 19. Characterization and treatment of municipal landfill leachates

    Author : Ulrika Welander; Bioteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; physical chemical treatment; biological treatment; characterization; organic substances; leachate treatment; municipal landfill; Biotechnology; Bioteknik;

    Abstract : Abstract The efficiency of different leachate treatment methods for the removal of refractory organic compounds and ammonium-nitrogen was investigated. The methods evaluated were nitrification, denitrification, adsorption onto activated carbon, precipitation by ferric chloride or aluminum sulphate and oxidation by ozone or Fenton´s reagent. READ MORE

  7. 20. Studies towards a method for incorporation of 3'-deoxy-3'-C-methylenephosphonate linkages into oligonucleotides

    Author : Anna Winqvist; Colin B. Reese; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organisk kemi; Organic Chemistry; organisk kemi;

    Abstract : Synthetic strategies towards 3’-deoxy-3’-C-methylenephosphinate building blocks were explored. The key transformations involved stereoselective hydroboration of 1-[2-O-(tert-butyldimethylsilyl-5-O-(4-methoxytrityl)-3-deoxy-3-C-methylene- ß -D-erythro-pentofuranosyl]uracil to give the corresponding 3’-deoxy-3’-C- hydroxymethyl derivative with ribo-configuration, as well as the further conversion into a precursor with a suitable leaving group, e. READ MORE