[final] Final projects

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Opiskelijavaihdon päättötyöt. / Student exchange final projects.

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Browsing [final] Final projects by Department "Kemian laitos"

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Now showing 1 - 6 of 6
  • CO2 absorption enthalpies measurements for carbon capture thermodynamic model validation
    (2013) Ferrer Serrano, Norma
     School of Chemical Engineering |
    The capture of carbon dioxide from post-combustion emission is one of the challenges for reducing the release of greenhouse gases into the atmosphere. It is a mature technology but studies are still needed particularly in order to reduce gas treatment costs. In the present work, densities and enthalpies of absorption of CO2 in aqueous solutions of several systems of alkanolamines were measured at 298,15K. The experiments were carried out using a flow mixing calorimetric technique (Setaram C80) that permits measuring enthalpies of absorption of CO2 in a sorbent solution as a function of loading charge (moles of CO2 per mole of amine). Measurements were performed by increasing the loading charge up to the saturation of the solution. Saturated loading point can be determined from the experimental enthalpy data and the values of enthalpies of absorption were found independents of the amine concentration. Experimental enthalpies and densities data were compared with literature values.
  • Embodied energy counting of sustainable heat, power and steel processes
    (2011) Losowska, Magdalena
     School of Chemical Engineering |
  • Glycerol based renewable traffic fuels
    (2008) Jara Muns, Francesc
     Helsinki University of Technology |
  • Organocatalytic enantioselective Robinson annulation
    (2013) Gillard, Laurent
     School of Chemical Engineering |
    The aim of the research was to find a catalytic and enantioselective way for the Robinson annulation reaction, our target molecule is the aspidospermine. The use of amino-acid is really useful in enamine chemistry, because they are chiral amino-compounds and can be easily substituted. Several primary and secondary amines were used as catalyst and a plethora of conditions were used to achieve this reaction. It was observed that the relativities of primary and secondary amine were really different indicated their mechanisms are different. No catalytic way to perform the reaction was found. It was improved and now this path allows us to reach 88% of the desired product. The catalytic way was developed with a sterically hindered catalyst. However, the conditions to achieve this are not the best. Attempts were performed to improve it, without any success. The enantioselectivities reached by those catalysts was low. The discovery of a possible interaction between the function of the catalyst and the enantioselectivity was established. However only low enantiomer excess was developed. The options are extensive, even if no very good e.e was achieved; there are still lots of opportunities in this field of research.
  • Thermodynamical modeling of alkalonamine solution
    (2013) Dominguez Alabern, Laura
     School of Chemical Engineering |
  • Transition metal catalyzed direct aldol reaction
    (2010) Creixell Valls, Xavier
     School of Chemical Engineering |