Sökning: "chlorate process"

Visar resultat 1 - 5 av 18 avhandlingar innehållade orden chlorate process.

  1. 1. Efficiency and Selectivity in the Chlorate Process

    Författare :Aleksandra Lindberg; Ann Cornell; Susanne Holmin; Eva Blomberg; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electrolysis; chlorate process; anodes; cathodes; selectivity; chromate; chromium VI ; DSA; HER; OER; ClER; oxygen; chlorate; hypochlorite; electrocatalysis; catalysis; Chemical Engineering; Kemiteknik;

    Sammanfattning : This licentiate thesis presents experimental studies concerning two parts of the electrochemical cell in the chlorate process: a cathode and an anode.Newly synthesized MnOx electrodes were investigated for the cathodic reaction, hydrogen evolution reaction (HER) in the chlorate process. LÄS MER

  3. 2. Influence of the electrolyte on the electrode reactions in the chlorate process

    Författare :Linda Nylén; Göran Lindbergh; Ann Cornell; Mårten Behm; Geoeff H Kelsall; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chlorate; chloride oxidation; critical anode potential; chromate; DSA; hydrogen evolution; iron; mass transport; oxygen evolution; REM; RDE; steel; Electrochemistry; Elektrokemi;

    Sammanfattning : The chlorate process is very energy intensive and a major part of the production costs are for electrical energy. Since the electricity prices are constantly increasing and may also vary periodically, the chlorate plants may be forced to adjust their production rate to the price at each moment in order to minimise their costs. LÄS MER

  4. 3. Oxygen formation in the chlorate process and preparation and deactivation of ozone selective anodes

    Författare :Staffan Sandin; Ann M. Cornell; Paul Christensen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATO; EOP; ozone; electrode preparation; elec- trode deactivation; hypochlorite; chlorate; oxygen; chromium VI ; sodium dichromate; electrocatalysis; catalysis; Chemical Engineering; Kemiteknik;

    Sammanfattning : This thesis presents experimental studies concerning two differ-ent electrolytic processes. One part deals with the electrochemicalformation of ozone and focuses on the preparation and deactiva-tion of a highly ozone-selective metal oxide anode (NATO - nickeland antimony doped tin oxide). LÄS MER

  5. 4. Electrode reactions in the chlorate process

    Författare :Ann Cornell; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical engineering; Kemiteknik;

    Sammanfattning : .... LÄS MER

  7. 5. Critical potential and oxygen evolution of the chlorate anode

    Författare :Linda Nylén; Göran Lindbergh; Yohannes Kiros; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; chlorate; chloride oxidation; oxygen evolution; critical anode potential; chromate; DSA; mass transport; RDE; Chemical engineering; Kemiteknik;

    Sammanfattning : In the chlorate process, natural convection arises thanks to the hydrogen evolving cathode. This increases the mass transport of the different species in the chlorate electrolyte. There is a strong connection between mass transport and the kinetics of the electrode reactions. LÄS MER