Sökning: "kinetic modelling"

Visar resultat 1 - 5 av 171 avhandlingar innehållade orden kinetic modelling.

1. 1. Carbohydrate degradation and dissolution during Kraft cooking : Modelling of kinetic results

   Författare :Dan Johansson; Ulf Germgård; Pedro Fardim; Karlstads universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kraft cooking; softwood; hardwood; cellulose; xylan; glucomannan; degradation; dissolution; Chemical engineering; Kemiteknik; Chemical Engineering; Kemiteknik;

   Sammanfattning : Chemical pulp fibres from wood are commonly used in products associated with packaging as well as with printing and writing. The prevalent way of liberating fibres is by subjecting wood chips to Kraft cooking. This process has a history of almost 130 years and should be both well described and well established. LÄS MER

3. 2. Kinetic and thermodynamic modelling of ternary nanowire growth

   Författare :Egor Leshchenko; NanoLund: Centre for Nanoscience; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; III-V semiconductor materials; ternary nanowires; composition; crystal structure; modelling; Fysicumarkivet A:2021:Leshchenko;

   Sammanfattning : Among nanoscale structures of different shapes and dimensions nanowires are one of the most promising because of its truly unique properties different from their bulk counterparts. The energy quantization, perfect defect-free structure, and the possibility to grow them within the miscibility gap in combination with the benefits of bottom-up design and the possibility of integration on silicon substrates make nanowires ideal candidates for applications in optoelectronics, biotechnology and energy harvesting. LÄS MER

4. 3. Kinetic modelling of autoignition phenomena

   Författare :David Johansson; Pehr Björnbom; Johan Andrae; Ulf Henriksson; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical engineering; Kemiteknik;

   Sammanfattning : To fully understand the elementary reactions behind the ignition of automotive fuels the interaction between the fuel components must be known. The ignition initiation is most often caused by loss of an H radical from a reactive fuel molecule, for example n-heptane. The formed alkyl radical is prone to react with oxygen under lean conditions. LÄS MER

5. 4. FTIR Studies and Kinetic Modelling of NOX Reduction and NOX Storage

   Författare :Björn Westerberg; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NOX storage; kinetic modelling; diesel exhaust; alumina; NOX reduction; FTIR spectroscopy; catalysis;

   Sammanfattning : FTIR spectroscopy and kinetic modelling have been used to study catalysts for NOX reduction and NOX storage. For Pt/Al2O3 exposed to NO, oxygen and propene IR-bands associated with nitrates, acetate, formate, carbonates and isocyanate were observed. Experiments with NO, oxygen and HNCO showed that isocyanate is an intermediate for reduction of NOX. LÄS MER

7. 5. Laser diagnostics and kinetic modelling of reaction intermediates in catalytic combustion

   Författare :Åsa Johansson; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Catalysis; Combustion; Kinetic modelling; Palladium; Platinum; Water formation; OH hydroxyl; Laser–induced fluorescence; Cavity ringdown spectroscopy; Desorption energy; CHEMKIN;

   Sammanfattning : Abstract: http://hdl.handle.net/2077/16136.. LÄS MER