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Visar resultat 1 - 5 av 118 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Parameter estimation in heterogeneous catalysis

   Författare :Jonas Sjöblom; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; microkinetic modelling; Jacobian; Parameter estimation; Latent Variable models; Design of experiments; heterogeneous catalysis; sensitivity analysis; Experimental design;

   Sammanfattning : The detailed modelling of heterogeneous catalytic systems is challenging due to the unknown nature of new catalytic materials as well as the often required transient nature of the resulting models. Thus, this thesis deals with the methodologies involved in the kinetic modelling of heterogeneous catalysis and in particular NOx reduction systems. LÄS MER

3. 2. Development and Applications of Surface-Confined Transition Metal Complexes : Heterogeneous Catalysis and Anisotropic Particle Surfaces

   Författare :Kristofer Eriksson; Jan-Erling Bäckvall; Graham Hutchings; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; heterogeneous catalysis; anisotropic particles; protein gradients; nanoparticles; organisk kemi; Organic Chemistry;

   Sammanfattning : The main focus of this thesis has been directed towards developing novel surface-confined transition metal complexes for applications in heterogeneous catalysis and for the preparation of anisotropic particle surfaces. The first part describes the heterogenization of a homogeneous transition metal-based catalyst tetraphenyl cobalt porphyrin (CoTPP) on silicon wafers and on silica particles. LÄS MER

4. 3. Metal-Organic Frameworks (MOFs) for Heterogeneous Catalysis : Synthesis and Characterization

   Författare :Mikaela Gustafsson; Xiaodong Zou; Pascal Van Der Voort; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; metal-organic frameworks; zeolitic imidazolate frameworks; functionalized linkers; structural transformation; heterogeneous catalysis; Structural Chemistry; strukturkemi;

   Sammanfattning : Metal-organic frameworks (MOFs) are crystalline hybrid materials with interesting chemical and physical properties. This thesis is focused on the synthesis and characterization of different MOFs and their use in heterogeneous catalysis. LÄS MER

5. 4. Operando Gas Imaging in Heterogeneous Catalysis

   Författare :Jianfeng Zhou; Förbränningsfysik; []
   Nyckelord :planar laser-induced fluoresence; degenerate four wave mixing; gas phase; CO oxidation; model catalyst; hetergeneous catalysis; laser-diagnostiska tekniker; gasfasdetektering; modellkatalys; heterogen katalys;

   Sammanfattning : This thesis deals with the development and application of laser-based techniques, for gas phasecharacterization/gas imaging in heterogeneous catalysis. Two techniques are presented: planar laser-induced fluorescence (PLIF) and degenerate four wave mixing (DFWM). LÄS MER

7. 5. Water splitting by heterogeneous catalysis

   Författare :Henrik Svengren; Mats Johnsson; Tomas Edvinsson; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Faradaic efficiency; electrocatalysis; electrolysis; water oxidation; hydrogen reduction; H2; O2; mass spectrometry; Inorganic Chemistry; oorganisk kemi;

   Sammanfattning : A sustainable solution for meeting the energy demands at our planet is by utilizing wind-, solar-, wave-, thermal-, biomass- and hydroelectric power. These renewable and CO2 emission-free energy sources are highly variable in terms of spatial and temporal availability over the Earth, introducing the need for an appropriate method of storing and carrying energy. LÄS MER