Sökning: "sodium dichromate"

Hittade 4 avhandlingar innehållade orden sodium dichromate.

1. 1. 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

3. 2. Energy efficiency in the sodium chlorate process: From electrocatalysis to pilot plant investigations

   Författare :Kristoffer Hedenstedt; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sodium chlorate; corrosion; mild steel; goethite; lepidocrocite; green rust; hypochlorite reduction; hydrogen evolution; in situ electrochemical Raman spectroscopy;

   Sammanfattning : Sodium chlorate is an important industrial chemical produced through an electrochemical manufacturing process. The global production rate is 3.6 million tons annually and consumes approximately 20 TWh of electrical power. The majority of the produced sodium chlorate is used as raw material to make chlorine dioxide for the bleaching of kraft pulp. LÄS MER

4. 3. 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

5. 4. Predictive testing for contact allergy : comparison of some guinea pig and mouse protocols including dose-response designs

   Författare :Helen Wahlkvist; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :contact allergens; contact allergy; cumulative contact enhancement test; dose-response; evaluation; Freund s complete adjuvant test; guinea pig maximization test; local lymph node assay; mouse ear swelling test; patch test; predictive testing; statistical analysis;

   Sammanfattning : Contact allergy (delayed hypersensitivity) may develop as a result of skin exposure to contact allergens (haptens) and can lead to allergic contact dermatitis. The purpose of this study was to evaluate some predictive animal test methods for contact allergens. LÄS MER